[fio.git] / stat.c

#include <stdio.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <libgen.h>
#include <math.h>

#include "fio.h"

static struct itimerval itimer;
static struct list_head disk_list = LIST_HEAD_INIT(disk_list);

static int get_io_ticks(struct disk_util *du, struct disk_util_stat *dus)
{
	unsigned in_flight;
	char line[256];
	FILE *f;
	char *p;

	f = fopen(du->path, "r");
	if (!f)
		return 1;

	p = fgets(line, sizeof(line), f);
	if (!p) {
		fclose(f);
		return 1;
	}

	if (sscanf(p, "%u %u %llu %u %u %u %llu %u %u %u %u\n", &dus->ios[0], &dus->merges[0], &dus->sectors[0], &dus->ticks[0], &dus->ios[1], &dus->merges[1], &dus->sectors[1], &dus->ticks[1], &in_flight, &dus->io_ticks, &dus->time_in_queue) != 11) {
		fclose(f);
		return 1;
	}

	fclose(f);
	return 0;
}

static void update_io_tick_disk(struct disk_util *du)
{
	struct disk_util_stat __dus, *dus, *ldus;
	struct timeval t;

	if (get_io_ticks(du, &__dus))
		return;

	dus = &du->dus;
	ldus = &du->last_dus;

	dus->sectors[0] += (__dus.sectors[0] - ldus->sectors[0]);
	dus->sectors[1] += (__dus.sectors[1] - ldus->sectors[1]);
	dus->ios[0] += (__dus.ios[0] - ldus->ios[0]);
	dus->ios[1] += (__dus.ios[1] - ldus->ios[1]);
	dus->merges[0] += (__dus.merges[0] - ldus->merges[0]);
	dus->merges[1] += (__dus.merges[1] - ldus->merges[1]);
	dus->ticks[0] += (__dus.ticks[0] - ldus->ticks[0]);
	dus->ticks[1] += (__dus.ticks[1] - ldus->ticks[1]);
	dus->io_ticks += (__dus.io_ticks - ldus->io_ticks);
	dus->time_in_queue += (__dus.time_in_queue - ldus->time_in_queue);

	fio_gettime(&t, NULL);
	du->msec += mtime_since(&du->time, &t);
	memcpy(&du->time, &t, sizeof(t));
	memcpy(ldus, &__dus, sizeof(__dus));
}

void update_io_ticks(void)
{
	struct list_head *entry;
	struct disk_util *du;

	list_for_each(entry, &disk_list) {
		du = list_entry(entry, struct disk_util, list);
		update_io_tick_disk(du);
	}
}

static int disk_util_exists(dev_t dev)
{
	struct list_head *entry;
	struct disk_util *du;

	list_for_each(entry, &disk_list) {
		du = list_entry(entry, struct disk_util, list);

		if (du->dev == dev)
			return 1;
	}

	return 0;
}

static void disk_util_add(dev_t dev, char *path)
{
	struct disk_util *du, *__du;
	struct list_head *entry;

	du = malloc(sizeof(*du));
	memset(du, 0, sizeof(*du));
	INIT_LIST_HEAD(&du->list);
	sprintf(du->path, "%s/stat", path);
	du->name = strdup(basename(path));
	du->dev = dev;

	list_for_each(entry, &disk_list) {
		__du = list_entry(entry, struct disk_util, list);

		if (!strcmp(du->name, __du->name)) {
			free(du->name);
			free(du);
			return;
		}
	}

	fio_gettime(&du->time, NULL);
	get_io_ticks(du, &du->last_dus);

	list_add_tail(&du->list, &disk_list);
}

static int check_dev_match(dev_t dev, char *path)
{
	unsigned int major, minor;
	char line[256], *p;
	FILE *f;

	f = fopen(path, "r");
	if (!f) {
		perror("open path");
		return 1;
	}

	p = fgets(line, sizeof(line), f);
	if (!p) {
		fclose(f);
		return 1;
	}

	if (sscanf(p, "%u:%u", &major, &minor) != 2) {
		fclose(f);
		return 1;
	}

	if (((major << 8) | minor) == dev) {
		fclose(f);
		return 0;
	}

	fclose(f);
	return 1;
}

static int find_block_dir(dev_t dev, char *path)
{
	struct dirent *dir;
	struct stat st;
	int found = 0;
	DIR *D;

	D = opendir(path);
	if (!D)
		return 0;

	while ((dir = readdir(D)) != NULL) {
		char full_path[256];

		if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
			continue;

		sprintf(full_path, "%s/%s", path, dir->d_name);

		if (!strcmp(dir->d_name, "dev")) {
			if (!check_dev_match(dev, full_path)) {
				found = 1;
				break;
			}
		}

		if (lstat(full_path, &st) == -1) {
			perror("stat");
			break;
		}

		if (!S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode))
			continue;

		found = find_block_dir(dev, full_path);
		if (found) {
			strcpy(path, full_path);
			break;
		}
	}

	closedir(D);
	return found;
}

void init_disk_util(struct thread_data *td)
{
	struct fio_file *f;
	struct stat st;
	char foo[PATH_MAX], tmp[PATH_MAX];
	dev_t dev;
	char *p;

	if (!td->do_disk_util || (td->io_ops->flags & (FIO_NETIO | FIO_NULLIO)))
		return;

	/*
	 * Just use the same file, they are on the same device.
	 */
	f = &td->files[0];
	if (!stat(f->file_name, &st)) {
		if (S_ISBLK(st.st_mode))
			dev = st.st_rdev;
		else
			dev = st.st_dev;
	} else {
		/*
		 * must be a file, open "." in that path
		 */
		strncpy(foo, f->file_name, PATH_MAX - 1);
		p = dirname(foo);
		if (stat(p, &st)) {
			perror("disk util stat");
			return;
		}

		dev = st.st_dev;
	}

	if (disk_util_exists(dev))
		return;
		
	sprintf(foo, "/sys/block");
	if (!find_block_dir(dev, foo))
		return;

	/*
	 * If there's a ../queue/ directory there, we are inside a partition.
	 * Check if that is the case and jump back. For loop/md/dm etc we
	 * are already in the right spot.
	 */
	sprintf(tmp, "%s/../queue", foo);
	if (!stat(tmp, &st)) {
		p = dirname(foo);
		sprintf(tmp, "%s/queue", p);
		if (stat(tmp, &st)) {
			log_err("unknown sysfs layout\n");
			return;
		}
		strncpy(tmp, p, PATH_MAX - 1);
		sprintf(foo, "%s", tmp);
	}

	if (td->ioscheduler)
		td->sysfs_root = strdup(foo);

	disk_util_add(dev, foo);
}

void disk_util_timer_arm(void)
{
	itimer.it_value.tv_sec = 0;
	itimer.it_value.tv_usec = DISK_UTIL_MSEC * 1000;
	setitimer(ITIMER_REAL, &itimer, NULL);
}

void update_rusage_stat(struct thread_data *td)
{
	getrusage(RUSAGE_SELF, &td->ru_end);

	td->usr_time += mtime_since(&td->ru_start.ru_utime, &td->ru_end.ru_utime);
	td->sys_time += mtime_since(&td->ru_start.ru_stime, &td->ru_end.ru_stime);
	td->ctx += td->ru_end.ru_nvcsw + td->ru_end.ru_nivcsw - (td->ru_start.ru_nvcsw + td->ru_start.ru_nivcsw);
	
	memcpy(&td->ru_start, &td->ru_end, sizeof(td->ru_end));
}

static int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
		    double *mean, double *dev)
{
	double n = is->samples;

	if (is->samples == 0)
		return 0;

	*min = is->min_val;
	*max = is->max_val;

	n = (double) is->samples;
	*mean = is->mean;

	if (n > 1.0)
		*dev = sqrt(is->S / (n - 1.0));
	else
		*dev = -1.0;

	return 1;
}

static void show_group_stats(struct group_run_stats *rs, int id)
{
	fprintf(f_out, "\nRun status group %d (all jobs):\n", id);

	if (rs->max_run[DDIR_READ])
		fprintf(f_out, "   READ: io=%lluMiB, aggrb=%llu, minb=%llu, maxb=%llu, mint=%llumsec, maxt=%llumsec\n", rs->io_kb[0] >> 10, rs->agg[0], rs->min_bw[0], rs->max_bw[0], rs->min_run[0], rs->max_run[0]);
	if (rs->max_run[DDIR_WRITE])
		fprintf(f_out, "  WRITE: io=%lluMiB, aggrb=%llu, minb=%llu, maxb=%llu, mint=%llumsec, maxt=%llumsec\n", rs->io_kb[1] >> 10, rs->agg[1], rs->min_bw[1], rs->max_bw[1], rs->min_run[1], rs->max_run[1]);
}

static void show_disk_util(void)
{
	struct disk_util_stat *dus;
	struct list_head *entry, *next;
	struct disk_util *du;
	double util;

	fprintf(f_out, "\nDisk stats (read/write):\n");

	list_for_each(entry, &disk_list) {
		du = list_entry(entry, struct disk_util, list);
		dus = &du->dus;

		util = (double) 100 * du->dus.io_ticks / (double) du->msec;
		if (util > 100.0)
			util = 100.0;

		fprintf(f_out, "  %s: ios=%u/%u, merge=%u/%u, ticks=%u/%u, in_queue=%u, util=%3.2f%%\n", du->name, dus->ios[0], dus->ios[1], dus->merges[0], dus->merges[1], dus->ticks[0], dus->ticks[1], dus->time_in_queue, util);
	}

	/*
	 * now free the list
	 */
	list_for_each_safe(entry, next, &disk_list) {
		list_del(entry);
		du = list_entry(entry, struct disk_util, list);
		free(du->name);
		free(du);
	}
}

static void show_ddir_status(struct thread_data *td, struct group_run_stats *rs,
			     int ddir)
{
	const char *ddir_str[] = { "read ", "write" };
	unsigned long min, max;
	unsigned long long bw;
	double mean, dev;

	if (!td->runtime[ddir])
		return;

	bw = td->io_bytes[ddir] / td->runtime[ddir];
	fprintf(f_out, "  %s: io=%6lluMiB, bw=%6lluKiB/s, runt=%6lumsec\n", ddir_str[ddir], td->io_bytes[ddir] >> 20, bw, td->runtime[ddir]);

	if (calc_lat(&td->slat_stat[ddir], &min, &max, &mean, &dev))
		fprintf(f_out, "    slat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);

	if (calc_lat(&td->clat_stat[ddir], &min, &max, &mean, &dev))
		fprintf(f_out, "    clat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);

	if (calc_lat(&td->bw_stat[ddir], &min, &max, &mean, &dev)) {
		double p_of_agg;

		p_of_agg = mean * 100 / (double) rs->agg[ddir];
		fprintf(f_out, "    bw (KiB/s) : min=%5lu, max=%5lu, per=%3.2f%%, avg=%5.02f, stdev=%5.02f\n", min, max, p_of_agg, mean, dev);
	}
}

static void show_thread_status(struct thread_data *td,
			       struct group_run_stats *rs)
{
	double usr_cpu, sys_cpu;
	unsigned long runtime;
	double io_u_dist[FIO_IO_U_MAP_NR];
	int i;

	if (!(td->io_bytes[0] + td->io_bytes[1]) && !td->error)
		return;

	fprintf(f_out, "%s: (groupid=%d): err=%2d: pid=%d\n",td->name, td->groupid, td->error, td->pid);

	show_ddir_status(td, rs, td->ddir);
	if (td->io_bytes[td->ddir ^ 1])
		show_ddir_status(td, rs, td->ddir ^ 1);

	runtime = mtime_since(&td->epoch, &td->end_time);
	if (runtime) {
		double runt = (double) runtime;

		usr_cpu = (double) td->usr_time * 100 / runt;
		sys_cpu = (double) td->sys_time * 100 / runt;
	} else {
		usr_cpu = 0;
		sys_cpu = 0;
	}

	fprintf(f_out, "  cpu          : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu\n", usr_cpu, sys_cpu, td->ctx);

	/*
	 * Do depth distribution calculations
	 */
	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
		io_u_dist[i] = (double) td->io_u_map[i] / (double) td->total_io_u;
		io_u_dist[i] *= 100.0;
	}

	fprintf(f_out, "  IO depths    : 1=%3.1f%%, 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%, 32=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3], io_u_dist[4], io_u_dist[5], io_u_dist[6]);

	if (td->description)
		fprintf(f_out, "%s\n", td->description);
}

static void show_ddir_status_terse(struct thread_data *td,
				   struct group_run_stats *rs, int ddir)
{
	unsigned long min, max;
	unsigned long long bw;
	double mean, dev;

	bw = 0;
	if (td->runtime[ddir])
		bw = td->io_bytes[ddir] / td->runtime[ddir];

	fprintf(f_out, ",%llu,%llu,%lu", td->io_bytes[ddir] >> 10, bw, td->runtime[ddir]);

	if (calc_lat(&td->slat_stat[ddir], &min, &max, &mean, &dev))
		fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev);
	else
		fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0);

	if (calc_lat(&td->clat_stat[ddir], &min, &max, &mean, &dev))
		fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev);
	else
		fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0);

	if (calc_lat(&td->bw_stat[ddir], &min, &max, &mean, &dev)) {
		double p_of_agg;

		p_of_agg = mean * 100 / (double) rs->agg[ddir];
		fprintf(f_out, ",%lu,%lu,%f%%,%f,%f", min, max, p_of_agg, mean, dev);
	} else
		fprintf(f_out, ",%lu,%lu,%f%%,%f,%f", 0UL, 0UL, 0.0, 0.0, 0.0);
		
}


static void show_thread_status_terse(struct thread_data *td,
				     struct group_run_stats *rs)
{
	double usr_cpu, sys_cpu;

	fprintf(f_out, "%s,%d,%d",td->name, td->groupid, td->error);

	show_ddir_status_terse(td, rs, 0);
	show_ddir_status_terse(td, rs, 1);

	if (td->runtime[0] + td->runtime[1]) {
		double runt = (double) (td->runtime[0] + td->runtime[1]);

		usr_cpu = (double) td->usr_time * 100 / runt;
		sys_cpu = (double) td->sys_time * 100 / runt;
	} else {
		usr_cpu = 0;
		sys_cpu = 0;
	}

	fprintf(f_out, ",%f%%,%f%%,%lu\n", usr_cpu, sys_cpu, td->ctx);
}

void show_run_stats(void)
{
	struct group_run_stats *runstats, *rs;
	struct thread_data *td;
	int i;

	runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));

	for (i = 0; i < groupid + 1; i++) {
		rs = &runstats[i];

		memset(rs, 0, sizeof(*rs));
		rs->min_bw[0] = rs->min_run[0] = ~0UL;
		rs->min_bw[1] = rs->min_run[1] = ~0UL;
	}

	for_each_td(td, i) {
		unsigned long long rbw, wbw;

		if (td->error) {
			fprintf(f_out, "%s: %s\n", td->name, td->verror);
			continue;
		}

		rs = &runstats[td->groupid];

		if (td->runtime[0] < rs->min_run[0] || !rs->min_run[0])
			rs->min_run[0] = td->runtime[0];
		if (td->runtime[0] > rs->max_run[0])
			rs->max_run[0] = td->runtime[0];
		if (td->runtime[1] < rs->min_run[1] || !rs->min_run[1])
			rs->min_run[1] = td->runtime[1];
		if (td->runtime[1] > rs->max_run[1])
			rs->max_run[1] = td->runtime[1];

		rbw = wbw = 0;
		if (td->runtime[0])
			rbw = td->io_bytes[0] / (unsigned long long) td->runtime[0];
		if (td->runtime[1])
			wbw = td->io_bytes[1] / (unsigned long long) td->runtime[1];

		if (rbw < rs->min_bw[0])
			rs->min_bw[0] = rbw;
		if (wbw < rs->min_bw[1])
			rs->min_bw[1] = wbw;
		if (rbw > rs->max_bw[0])
			rs->max_bw[0] = rbw;
		if (wbw > rs->max_bw[1])
			rs->max_bw[1] = wbw;

		rs->io_kb[0] += td->io_bytes[0] >> 10;
		rs->io_kb[1] += td->io_bytes[1] >> 10;
	}

	for (i = 0; i < groupid + 1; i++) {
		rs = &runstats[i];

		if (rs->max_run[0])
			rs->agg[0] = (rs->io_kb[0]*1024) / rs->max_run[0];
		if (rs->max_run[1])
			rs->agg[1] = (rs->io_kb[1]*1024) / rs->max_run[1];
	}

	/*
	 * don't overwrite last signal output
	 */
	if (!terse_output)
		printf("\n");

	for_each_td(td, i) {
		rs = &runstats[td->groupid];

		if (terse_output)
			show_thread_status_terse(td, rs);
		else
			show_thread_status(td, rs);
	}

	if (!terse_output) {
		for (i = 0; i < groupid + 1; i++)
			show_group_stats(&runstats[i], i);

		show_disk_util();
	}

	free(runstats);
}

static inline void add_stat_sample(struct io_stat *is, unsigned long data)
{
	double val = data;
	double delta, n;

	if (data > is->max_val)
		is->max_val = data;
	if (data < is->min_val)
		is->min_val = data;

	delta = val - is->mean;
	n = is->samples + 1.0;
	is->mean += delta / n;
	is->S += delta * (val - is->mean);

	is->samples++;
}

static void __add_log_sample(struct io_log *iolog, unsigned long val,
			     enum fio_ddir ddir, unsigned long time)
{
	if (iolog->nr_samples == iolog->max_samples) {
		int new_size = sizeof(struct io_sample) * iolog->max_samples*2;

		iolog->log = realloc(iolog->log, new_size);
		iolog->max_samples <<= 1;
	}

	iolog->log[iolog->nr_samples].val = val;
	iolog->log[iolog->nr_samples].time = time;
	iolog->log[iolog->nr_samples].ddir = ddir;
	iolog->nr_samples++;
}

static void add_log_sample(struct thread_data *td, struct io_log *iolog,
			   unsigned long val, enum fio_ddir ddir)
{
	__add_log_sample(iolog, val, ddir, mtime_since_now(&td->epoch));
}

void add_agg_sample(unsigned long val, enum fio_ddir ddir)
{
	struct io_log *iolog = agg_io_log[ddir];

	__add_log_sample(iolog, val, ddir, mtime_since_genesis());
}

void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
		     unsigned long msec)
{
	add_stat_sample(&td->clat_stat[ddir], msec);

	if (td->clat_log)
		add_log_sample(td, td->clat_log, msec, ddir);
}

void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
		     unsigned long msec)
{
	add_stat_sample(&td->slat_stat[ddir], msec);

	if (td->slat_log)
		add_log_sample(td, td->slat_log, msec, ddir);
}

void add_bw_sample(struct thread_data *td, enum fio_ddir ddir,
		   struct timeval *t)
{
	unsigned long spent = mtime_since(&td->stat_sample_time[ddir], t);
	unsigned long rate;

	if (spent < td->bw_avg_time)
		return;

	rate = (td->this_io_bytes[ddir] - td->stat_io_bytes[ddir]) / spent;
	add_stat_sample(&td->bw_stat[ddir], rate);

	if (td->bw_log)
		add_log_sample(td, td->bw_log, rate, ddir);

	fio_gettime(&td->stat_sample_time[ddir], NULL);
	td->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
}
Commit	Line	Data
3c39a379 JA	1	#include <stdio.h>
	2	#include <string.h>
	3	#include <sys/time.h>
	4	#include <sys/types.h>
5c4e1dbc	5	#include <sys/stat.h>
3c39a379 JA	6	#include <dirent.h>
	7	#include <libgen.h>
	8	#include <math.h>
	9
	10	#include "fio.h"
3c39a379 JA	11
3c39a379 JA	12	static struct itimerval itimer;
5c4e1dbc	13	static struct list_head disk_list = LIST_HEAD_INIT(disk_list);
3c39a379 JA	14
	15	static int get_io_ticks(struct disk_util du, struct disk_util_stat dus)
	16	{
	17	unsigned in_flight;
	18	char line[256];
	19	FILE *f;
	20	char *p;
	21
	22	f = fopen(du->path, "r");
	23	if (!f)
	24	return 1;
	25
	26	p = fgets(line, sizeof(line), f);
	27	if (!p) {
	28	fclose(f);
	29	return 1;
	30	}
	31
	32	if (sscanf(p, "%u %u %llu %u %u %u %llu %u %u %u %u\n", &dus->ios[0], &dus->merges[0], &dus->sectors[0], &dus->ticks[0], &dus->ios[1], &dus->merges[1], &dus->sectors[1], &dus->ticks[1], &in_flight, &dus->io_ticks, &dus->time_in_queue) != 11) {
	33	fclose(f);
	34	return 1;
	35	}
	36
	37	fclose(f);
	38	return 0;
	39	}
	40
	41	static void update_io_tick_disk(struct disk_util *du)
	42	{
	43	struct disk_util_stat __dus, dus, ldus;
	44	struct timeval t;
	45
	46	if (get_io_ticks(du, &__dus))
	47	return;
	48
	49	dus = &du->dus;
	50	ldus = &du->last_dus;
	51
	52	dus->sectors[0] += (__dus.sectors[0] - ldus->sectors[0]);
	53	dus->sectors[1] += (__dus.sectors[1] - ldus->sectors[1]);
	54	dus->ios[0] += (__dus.ios[0] - ldus->ios[0]);
	55	dus->ios[1] += (__dus.ios[1] - ldus->ios[1]);
	56	dus->merges[0] += (__dus.merges[0] - ldus->merges[0]);
	57	dus->merges[1] += (__dus.merges[1] - ldus->merges[1]);
	58	dus->ticks[0] += (__dus.ticks[0] - ldus->ticks[0]);
	59	dus->ticks[1] += (__dus.ticks[1] - ldus->ticks[1]);
	60	dus->io_ticks += (__dus.io_ticks - ldus->io_ticks);
	61	dus->time_in_queue += (__dus.time_in_queue - ldus->time_in_queue);
	62
02bcaa8c	63	fio_gettime(&t, NULL);
3c39a379 JA	64	du->msec += mtime_since(&du->time, &t);
	65	memcpy(&du->time, &t, sizeof(t));
	66	memcpy(ldus, &__dus, sizeof(__dus));
	67	}
	68
	69	void update_io_ticks(void)
	70	{
	71	struct list_head *entry;
	72	struct disk_util *du;
	73
	74	list_for_each(entry, &disk_list) {
	75	du = list_entry(entry, struct disk_util, list);
	76	update_io_tick_disk(du);
	77	}
	78	}
	79
	80	static int disk_util_exists(dev_t dev)
	81	{
	82	struct list_head *entry;
	83	struct disk_util *du;
	84
	85	list_for_each(entry, &disk_list) {
	86	du = list_entry(entry, struct disk_util, list);
	87
	88	if (du->dev == dev)
	89	return 1;
	90	}
	91
	92	return 0;
	93	}
	94
	95	static void disk_util_add(dev_t dev, char *path)
	96	{
1188caf8 JA	97	struct disk_util du, __du;
1188caf8 JA	98	struct list_head *entry;
3c39a379	99
1188caf8	100	du = malloc(sizeof(*du));
3c39a379 JA	101	memset(du, 0, sizeof(*du));
	102	INIT_LIST_HEAD(&du->list);
	103	sprintf(du->path, "%s/stat", path);
	104	du->name = strdup(basename(path));
	105	du->dev = dev;
	106
1188caf8 JA	107	list_for_each(entry, &disk_list) {
	108	__du = list_entry(entry, struct disk_util, list);
	109
	110	if (!strcmp(du->name, __du->name)) {
	111	free(du->name);
	112	free(du);
	113	return;
	114	}
	115	}
	116
02bcaa8c	117	fio_gettime(&du->time, NULL);
3c39a379 JA	118	get_io_ticks(du, &du->last_dus);
	119
	120	list_add_tail(&du->list, &disk_list);
	121	}
	122
	123	static int check_dev_match(dev_t dev, char *path)
	124	{
	125	unsigned int major, minor;
	126	char line[256], *p;
	127	FILE *f;
	128
	129	f = fopen(path, "r");
	130	if (!f) {
	131	perror("open path");
	132	return 1;
	133	}
	134
	135	p = fgets(line, sizeof(line), f);
	136	if (!p) {
	137	fclose(f);
	138	return 1;
	139	}
	140
	141	if (sscanf(p, "%u:%u", &major, &minor) != 2) {
	142	fclose(f);
	143	return 1;
	144	}
	145
	146	if (((major << 8) \| minor) == dev) {
	147	fclose(f);
	148	return 0;
	149	}
	150
	151	fclose(f);
	152	return 1;
	153	}
	154
	155	static int find_block_dir(dev_t dev, char *path)
	156	{
	157	struct dirent *dir;
	158	struct stat st;
	159	int found = 0;
	160	DIR *D;
	161
	162	D = opendir(path);
	163	if (!D)
	164	return 0;
	165
	166	while ((dir = readdir(D)) != NULL) {
	167	char full_path[256];
	168
	169	if (!strcmp(dir->d_name, ".") \|\| !strcmp(dir->d_name, ".."))
	170	continue;
3c39a379 JA	171
	172	sprintf(full_path, "%s/%s", path, dir->d_name);
	173
	174	if (!strcmp(dir->d_name, "dev")) {
	175	if (!check_dev_match(dev, full_path)) {
	176	found = 1;
	177	break;
	178	}
	179	}
	180
3307d653	181	if (lstat(full_path, &st) == -1) {
3c39a379 JA	182	perror("stat");
	183	break;
	184	}
	185
	186	if (!S_ISDIR(st.st_mode) \|\| S_ISLNK(st.st_mode))
	187	continue;
	188
	189	found = find_block_dir(dev, full_path);
	190	if (found) {
	191	strcpy(path, full_path);
	192	break;
	193	}
	194	}
	195
	196	closedir(D);
	197	return found;
	198	}
	199
	200	void init_disk_util(struct thread_data *td)
	201	{
53cdc686	202	struct fio_file *f;
3c39a379	203	struct stat st;
0bbab0e7	204	char foo[PATH_MAX], tmp[PATH_MAX];
3c39a379 JA	205	dev_t dev;
	206	char *p;
	207
4d9345ae	208	if (!td->do_disk_util \|\| (td->io_ops->flags & (FIO_NETIO \| FIO_NULLIO)))
3c39a379 JA	209	return;
3c39a379 JA	210
53cdc686 JA	211	/*
	212	* Just use the same file, they are on the same device.
	213	*/
	214	f = &td->files[0];
	215	if (!stat(f->file_name, &st)) {
3c39a379 JA	216	if (S_ISBLK(st.st_mode))
	217	dev = st.st_rdev;
	218	else
	219	dev = st.st_dev;
	220	} else {
	221	/*
	222	* must be a file, open "." in that path
	223	*/
0bbab0e7	224	strncpy(foo, f->file_name, PATH_MAX - 1);
3c39a379 JA	225	p = dirname(foo);
	226	if (stat(p, &st)) {
	227	perror("disk util stat");
	228	return;
	229	}
	230
	231	dev = st.st_dev;
	232	}
	233
	234	if (disk_util_exists(dev))
	235	return;
	236
	237	sprintf(foo, "/sys/block");
	238	if (!find_block_dir(dev, foo))
	239	return;
	240
	241	/*
	242	* If there's a ../queue/ directory there, we are inside a partition.
	243	* Check if that is the case and jump back. For loop/md/dm etc we
	244	* are already in the right spot.
	245	*/
	246	sprintf(tmp, "%s/../queue", foo);
	247	if (!stat(tmp, &st)) {
	248	p = dirname(foo);
	249	sprintf(tmp, "%s/queue", p);
	250	if (stat(tmp, &st)) {
3b70d7e5	251	log_err("unknown sysfs layout\n");
3c39a379 JA	252	return;
3c39a379 JA	253	}
0bbab0e7	254	strncpy(tmp, p, PATH_MAX - 1);
84585003	255	sprintf(foo, "%s", tmp);
3c39a379 JA	256	}
3c39a379 JA	257
eecf272f JA	258	if (td->ioscheduler)
	259	td->sysfs_root = strdup(foo);
	260
3c39a379 JA	261	disk_util_add(dev, foo);
	262	}
	263
	264	void disk_util_timer_arm(void)
	265	{
	266	itimer.it_value.tv_sec = 0;
	267	itimer.it_value.tv_usec = DISK_UTIL_MSEC * 1000;
	268	setitimer(ITIMER_REAL, &itimer, NULL);
	269	}
	270
	271	void update_rusage_stat(struct thread_data *td)
	272	{
3c39a379 JA	273	getrusage(RUSAGE_SELF, &td->ru_end);
	274
	275	td->usr_time += mtime_since(&td->ru_start.ru_utime, &td->ru_end.ru_utime);
	276	td->sys_time += mtime_since(&td->ru_start.ru_stime, &td->ru_end.ru_stime);
	277	td->ctx += td->ru_end.ru_nvcsw + td->ru_end.ru_nivcsw - (td->ru_start.ru_nvcsw + td->ru_start.ru_nivcsw);
3c39a379 JA	278
	279	memcpy(&td->ru_start, &td->ru_end, sizeof(td->ru_end));
	280	}
	281
	282	static int calc_lat(struct io_stat is, unsigned long min, unsigned long *max,
	283	double mean, double dev)
	284	{
68704084	285	double n = is->samples;
3c39a379 JA	286
	287	if (is->samples == 0)
	288	return 0;
	289
	290	*min = is->min_val;
	291	*max = is->max_val;
	292
	293	n = (double) is->samples;
68704084	294	*mean = is->mean;
e6d276f2	295
68704084 JA	296	if (n > 1.0)
68704084 JA	297	*dev = sqrt(is->S / (n - 1.0));
ef9c5c40	298	else
68704084	299	*dev = -1.0;
ef9c5c40	300
3c39a379 JA	301	return 1;
	302	}
	303
	304	static void show_group_stats(struct group_run_stats *rs, int id)
	305	{
eb8bbf48	306	fprintf(f_out, "\nRun status group %d (all jobs):\n", id);
3c39a379 JA	307
3c39a379 JA	308	if (rs->max_run[DDIR_READ])
eb8bbf48	309	fprintf(f_out, " READ: io=%lluMiB, aggrb=%llu, minb=%llu, maxb=%llu, mint=%llumsec, maxt=%llumsec\n", rs->io_kb[0] >> 10, rs->agg[0], rs->min_bw[0], rs->max_bw[0], rs->min_run[0], rs->max_run[0]);
3c39a379	310	if (rs->max_run[DDIR_WRITE])
eb8bbf48	311	fprintf(f_out, " WRITE: io=%lluMiB, aggrb=%llu, minb=%llu, maxb=%llu, mint=%llumsec, maxt=%llumsec\n", rs->io_kb[1] >> 10, rs->agg[1], rs->min_bw[1], rs->max_bw[1], rs->min_run[1], rs->max_run[1]);
3c39a379 JA	312	}
	313
	314	static void show_disk_util(void)
	315	{
	316	struct disk_util_stat *dus;
b4a6a59a	317	struct list_head entry, next;
3c39a379 JA	318	struct disk_util *du;
	319	double util;
	320
eb8bbf48	321	fprintf(f_out, "\nDisk stats (read/write):\n");
3c39a379 JA	322
	323	list_for_each(entry, &disk_list) {
	324	du = list_entry(entry, struct disk_util, list);
	325	dus = &du->dus;
	326
	327	util = (double) 100 * du->dus.io_ticks / (double) du->msec;
	328	if (util > 100.0)
	329	util = 100.0;
	330
eb8bbf48	331	fprintf(f_out, " %s: ios=%u/%u, merge=%u/%u, ticks=%u/%u, in_queue=%u, util=%3.2f%%\n", du->name, dus->ios[0], dus->ios[1], dus->merges[0], dus->merges[1], dus->ticks[0], dus->ticks[1], dus->time_in_queue, util);
3c39a379	332	}
b4a6a59a JA	333
	334	/*
	335	* now free the list
	336	*/
	337	list_for_each_safe(entry, next, &disk_list) {
	338	list_del(entry);
	339	du = list_entry(entry, struct disk_util, list);
	340	free(du->name);
	341	free(du);
	342	}
3c39a379 JA	343	}
	344
	345	static void show_ddir_status(struct thread_data td, struct group_run_stats rs,
	346	int ddir)
	347	{
3c9b60c1	348	const char *ddir_str[] = { "read ", "write" };
3c39a379 JA	349	unsigned long min, max;
	350	unsigned long long bw;
	351	double mean, dev;
	352
	353	if (!td->runtime[ddir])
	354	return;
	355
	356	bw = td->io_bytes[ddir] / td->runtime[ddir];
eb8bbf48	357	fprintf(f_out, " %s: io=%6lluMiB, bw=%6lluKiB/s, runt=%6lumsec\n", ddir_str[ddir], td->io_bytes[ddir] >> 20, bw, td->runtime[ddir]);
3c39a379 JA	358
3c39a379 JA	359	if (calc_lat(&td->slat_stat[ddir], &min, &max, &mean, &dev))
6104ddb6	360	fprintf(f_out, " slat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);
3c39a379 JA	361
3c39a379 JA	362	if (calc_lat(&td->clat_stat[ddir], &min, &max, &mean, &dev))
6104ddb6	363	fprintf(f_out, " clat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);
3c39a379 JA	364
	365	if (calc_lat(&td->bw_stat[ddir], &min, &max, &mean, &dev)) {
	366	double p_of_agg;
	367
	368	p_of_agg = mean * 100 / (double) rs->agg[ddir];
6104ddb6	369	fprintf(f_out, " bw (KiB/s) : min=%5lu, max=%5lu, per=%3.2f%%, avg=%5.02f, stdev=%5.02f\n", min, max, p_of_agg, mean, dev);
3c39a379 JA	370	}
	371	}
	372
	373	static void show_thread_status(struct thread_data *td,
	374	struct group_run_stats *rs)
	375	{
	376	double usr_cpu, sys_cpu;
69008999	377	unsigned long runtime;
71619dc2 JA	378	double io_u_dist[FIO_IO_U_MAP_NR];
71619dc2 JA	379	int i;
3c39a379 JA	380
	381	if (!(td->io_bytes[0] + td->io_bytes[1]) && !td->error)
	382	return;
	383
bb3884d8	384	fprintf(f_out, "%s: (groupid=%d): err=%2d: pid=%d\n",td->name, td->groupid, td->error, td->pid);
3c39a379 JA	385
	386	show_ddir_status(td, rs, td->ddir);
	387	if (td->io_bytes[td->ddir ^ 1])
	388	show_ddir_status(td, rs, td->ddir ^ 1);
	389
69008999 JA	390	runtime = mtime_since(&td->epoch, &td->end_time);
69008999 JA	391	if (runtime) {
1e97cce9	392	double runt = (double) runtime;
3c39a379 JA	393
	394	usr_cpu = (double) td->usr_time * 100 / runt;
	395	sys_cpu = (double) td->sys_time * 100 / runt;
	396	} else {
	397	usr_cpu = 0;
	398	sys_cpu = 0;
	399	}
	400
eb8bbf48	401	fprintf(f_out, " cpu : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu\n", usr_cpu, sys_cpu, td->ctx);
71619dc2 JA	402
	403	/*
	404	* Do depth distribution calculations
	405	*/
	406	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
	407	io_u_dist[i] = (double) td->io_u_map[i] / (double) td->total_io_u;
	408	io_u_dist[i] *= 100.0;
	409	}
	410
5d458077	411	fprintf(f_out, " IO depths : 1=%3.1f%%, 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%, 32=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3], io_u_dist[4], io_u_dist[5], io_u_dist[6]);
61697c37 JA	412
	413	if (td->description)
	414	fprintf(f_out, "%s\n", td->description);
3c39a379 JA	415	}
3c39a379 JA	416
c6ae0a5b JA	417	static void show_ddir_status_terse(struct thread_data *td,
	418	struct group_run_stats *rs, int ddir)
	419	{
	420	unsigned long min, max;
	421	unsigned long long bw;
	422	double mean, dev;
	423
	424	bw = 0;
	425	if (td->runtime[ddir])
	426	bw = td->io_bytes[ddir] / td->runtime[ddir];
	427
	428	fprintf(f_out, ",%llu,%llu,%lu", td->io_bytes[ddir] >> 10, bw, td->runtime[ddir]);
	429
	430	if (calc_lat(&td->slat_stat[ddir], &min, &max, &mean, &dev))
	431	fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev);
	432	else
	433	fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0);
	434
	435	if (calc_lat(&td->clat_stat[ddir], &min, &max, &mean, &dev))
	436	fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev);
	437	else
	438	fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0);
	439
	440	if (calc_lat(&td->bw_stat[ddir], &min, &max, &mean, &dev)) {
	441	double p_of_agg;
	442
	443	p_of_agg = mean * 100 / (double) rs->agg[ddir];
	444	fprintf(f_out, ",%lu,%lu,%f%%,%f,%f", min, max, p_of_agg, mean, dev);
	445	} else
	446	fprintf(f_out, ",%lu,%lu,%f%%,%f,%f", 0UL, 0UL, 0.0, 0.0, 0.0);
	447
	448	}
	449
	450
	451	static void show_thread_status_terse(struct thread_data *td,
	452	struct group_run_stats *rs)
	453	{
	454	double usr_cpu, sys_cpu;
	455
	456	fprintf(f_out, "%s,%d,%d",td->name, td->groupid, td->error);
	457
	458	show_ddir_status_terse(td, rs, 0);
	459	show_ddir_status_terse(td, rs, 1);
	460
	461	if (td->runtime[0] + td->runtime[1]) {
1e97cce9	462	double runt = (double) (td->runtime[0] + td->runtime[1]);
c6ae0a5b JA	463
	464	usr_cpu = (double) td->usr_time * 100 / runt;
	465	sys_cpu = (double) td->sys_time * 100 / runt;
	466	} else {
	467	usr_cpu = 0;
	468	sys_cpu = 0;
	469	}
	470
	471	fprintf(f_out, ",%f%%,%f%%,%lu\n", usr_cpu, sys_cpu, td->ctx);
	472	}
	473
3c39a379 JA	474	void show_run_stats(void)
	475	{
	476	struct group_run_stats runstats, rs;
	477	struct thread_data *td;
	478	int i;
	479
	480	runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
	481
	482	for (i = 0; i < groupid + 1; i++) {
	483	rs = &runstats[i];
	484
	485	memset(rs, 0, sizeof(*rs));
	486	rs->min_bw[0] = rs->min_run[0] = ~0UL;
	487	rs->min_bw[1] = rs->min_run[1] = ~0UL;
	488	}
	489
34572e28	490	for_each_td(td, i) {
3c39a379 JA	491	unsigned long long rbw, wbw;
3c39a379 JA	492
3c39a379	493	if (td->error) {
eb8bbf48	494	fprintf(f_out, "%s: %s\n", td->name, td->verror);
3c39a379 JA	495	continue;
	496	}
	497
	498	rs = &runstats[td->groupid];
	499
	500	if (td->runtime[0] < rs->min_run[0] \|\| !rs->min_run[0])
	501	rs->min_run[0] = td->runtime[0];
	502	if (td->runtime[0] > rs->max_run[0])
	503	rs->max_run[0] = td->runtime[0];
	504	if (td->runtime[1] < rs->min_run[1] \|\| !rs->min_run[1])
	505	rs->min_run[1] = td->runtime[1];
	506	if (td->runtime[1] > rs->max_run[1])
	507	rs->max_run[1] = td->runtime[1];
	508
	509	rbw = wbw = 0;
	510	if (td->runtime[0])
	511	rbw = td->io_bytes[0] / (unsigned long long) td->runtime[0];
	512	if (td->runtime[1])
	513	wbw = td->io_bytes[1] / (unsigned long long) td->runtime[1];
	514
	515	if (rbw < rs->min_bw[0])
	516	rs->min_bw[0] = rbw;
	517	if (wbw < rs->min_bw[1])
	518	rs->min_bw[1] = wbw;
	519	if (rbw > rs->max_bw[0])
	520	rs->max_bw[0] = rbw;
	521	if (wbw > rs->max_bw[1])
	522	rs->max_bw[1] = wbw;
	523
	524	rs->io_kb[0] += td->io_bytes[0] >> 10;
	525	rs->io_kb[1] += td->io_bytes[1] >> 10;
	526	}
	527
	528	for (i = 0; i < groupid + 1; i++) {
	529	rs = &runstats[i];
	530
	531	if (rs->max_run[0])
	532	rs->agg[0] = (rs->io_kb[0]*1024) / rs->max_run[0];
	533	if (rs->max_run[1])
	534	rs->agg[1] = (rs->io_kb[1]*1024) / rs->max_run[1];
	535	}
	536
	537	/*
	538	* don't overwrite last signal output
	539	*/
c6ae0a5b JA	540	if (!terse_output)
c6ae0a5b JA	541	printf("\n");
3c39a379	542
34572e28	543	for_each_td(td, i) {
3c39a379 JA	544	rs = &runstats[td->groupid];
3c39a379 JA	545
c6ae0a5b JA	546	if (terse_output)
	547	show_thread_status_terse(td, rs);
	548	else
	549	show_thread_status(td, rs);
3c39a379 JA	550	}
3c39a379 JA	551
c6ae0a5b JA	552	if (!terse_output) {
	553	for (i = 0; i < groupid + 1; i++)
	554	show_group_stats(&runstats[i], i);
3c39a379	555
c6ae0a5b JA	556	show_disk_util();
c6ae0a5b JA	557	}
eecf272f JA	558
eecf272f JA	559	free(runstats);
3c39a379 JA	560	}
3c39a379 JA	561
68704084	562	static inline void add_stat_sample(struct io_stat *is, unsigned long data)
3c39a379	563	{
68704084 JA	564	double val = data;
	565	double delta, n;
	566
	567	if (data > is->max_val)
	568	is->max_val = data;
	569	if (data < is->min_val)
	570	is->min_val = data;
	571
	572	delta = val - is->mean;
	573	n = is->samples + 1.0;
	574	is->mean += delta / n;
	575	is->S += delta * (val - is->mean);
3c39a379	576
3c39a379 JA	577	is->samples++;
	578	}
	579
bb3884d8 JA	580	static void __add_log_sample(struct io_log *iolog, unsigned long val,
bb3884d8 JA	581	enum fio_ddir ddir, unsigned long time)
3c39a379 JA	582	{
	583	if (iolog->nr_samples == iolog->max_samples) {
	584	int new_size = sizeof(struct io_sample) * iolog->max_samples*2;
	585
	586	iolog->log = realloc(iolog->log, new_size);
	587	iolog->max_samples <<= 1;
	588	}
	589
	590	iolog->log[iolog->nr_samples].val = val;
bb3884d8	591	iolog->log[iolog->nr_samples].time = time;
3c39a379 JA	592	iolog->log[iolog->nr_samples].ddir = ddir;
	593	iolog->nr_samples++;
	594	}
	595
bb3884d8 JA	596	static void add_log_sample(struct thread_data td, struct io_log iolog,
	597	unsigned long val, enum fio_ddir ddir)
	598	{
	599	__add_log_sample(iolog, val, ddir, mtime_since_now(&td->epoch));
	600	}
	601
	602	void add_agg_sample(unsigned long val, enum fio_ddir ddir)
	603	{
	604	struct io_log *iolog = agg_io_log[ddir];
	605
	606	__add_log_sample(iolog, val, ddir, mtime_since_genesis());
	607	}
	608
1e97cce9 JA	609	void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
1e97cce9 JA	610	unsigned long msec)
3c39a379 JA	611	{
	612	add_stat_sample(&td->clat_stat[ddir], msec);
	613
	614	if (td->clat_log)
	615	add_log_sample(td, td->clat_log, msec, ddir);
	616	}
	617
1e97cce9 JA	618	void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
1e97cce9 JA	619	unsigned long msec)
3c39a379 JA	620	{
	621	add_stat_sample(&td->slat_stat[ddir], msec);
	622
	623	if (td->slat_log)
	624	add_log_sample(td, td->slat_log, msec, ddir);
	625	}
	626
1e97cce9 JA	627	void add_bw_sample(struct thread_data *td, enum fio_ddir ddir,
1e97cce9 JA	628	struct timeval *t)
3c39a379	629	{
02bcaa8c	630	unsigned long spent = mtime_since(&td->stat_sample_time[ddir], t);
3c39a379 JA	631	unsigned long rate;
	632
	633	if (spent < td->bw_avg_time)
	634	return;
	635
	636	rate = (td->this_io_bytes[ddir] - td->stat_io_bytes[ddir]) / spent;
	637	add_stat_sample(&td->bw_stat[ddir], rate);
	638
	639	if (td->bw_log)
	640	add_log_sample(td, td->bw_log, rate, ddir);
	641
02bcaa8c	642	fio_gettime(&td->stat_sample_time[ddir], NULL);
3c39a379 JA	643	td->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
	644	}
	645
	646