X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=backend.c;h=b9c1c1230585cc41b2a78eb8e218ebe58e6d87ea;hp=87810e89d696ea7f453469eff59a486620dbdcab;hb=fdc0f3b646e417497849d4398029f780b0e5262f;hpb=44404c5a7f90aa42c3228b56b6f686f15a50fb29

diff --git a/backend.c b/backend.c
index 87810e89..b9c1c123 100644
--- a/backend.c
+++ b/backend.c
@@ -34,12 +34,12 @@
 #include <sys/stat.h>
 #include <sys/wait.h>
 #include <sys/ipc.h>
-#ifndef FIO_NO_HAVE_SHM_H
-#include <sys/shm.h>
-#endif
 #include <sys/mman.h>
 
 #include "fio.h"
+#ifndef FIO_NO_HAVE_SHM_H
+#include <sys/shm.h>
+#endif
 #include "hash.h"
 #include "smalloc.h"
 #include "verify.h"
@@ -51,6 +51,7 @@
 #include "memalign.h"
 #include "server.h"
 #include "lib/getrusage.h"
+#include "idletime.h"
 
 static pthread_t disk_util_thread;
 static struct fio_mutex *disk_thread_mutex;
@@ -60,14 +61,14 @@ static struct flist_head *cgroup_list;
 static char *cgroup_mnt;
 static int exit_value;
 static volatile int fio_abort;
+static unsigned int nr_process = 0;
+static unsigned int nr_thread = 0;
 
 struct io_log *agg_io_log[DDIR_RWDIR_CNT];
 
 int groupid = 0;
 unsigned int thread_number = 0;
 unsigned int stat_number = 0;
-unsigned int nr_process = 0;
-unsigned int nr_thread = 0;
 int shm_id = 0;
 int temp_stall_ts;
 unsigned long done_secs = 0;
@@ -237,8 +238,6 @@ static int check_min_rate(struct thread_data *td, struct timeval *now,
  */
 static void cleanup_pending_aio(struct thread_data *td)
 {
-	struct flist_head *entry, *n;
-	struct io_u *io_u;
 	int r;
 
 	/*
@@ -252,18 +251,11 @@ static void cleanup_pending_aio(struct thread_data *td)
 	 * now cancel remaining active events
 	 */
 	if (td->io_ops->cancel) {
-		flist_for_each_safe(entry, n, &td->io_u_busylist) {
-			io_u = flist_entry(entry, struct io_u, list);
+		struct io_u *io_u;
+		int i;
 
-			/*
-			 * if the io_u isn't in flight, then that generally
-			 * means someone leaked an io_u. complain but fix
-			 * it up, so we don't stall here.
-			 */
-			if ((io_u->flags & IO_U_F_FLIGHT) == 0) {
-				log_err("fio: non-busy IO on busy list\n");
-				put_io_u(td, io_u);
-			} else {
+		io_u_qiter(&td->io_u_all, io_u, i) {
+			if (io_u->flags & IO_U_F_FLIGHT) {
 				r = td->io_ops->cancel(td, io_u);
 				if (!r)
 					put_io_u(td, io_u);
@@ -321,6 +313,21 @@ requeue:
 	return 0;
 }
 
+static int fio_file_fsync(struct thread_data *td, struct fio_file *f)
+{
+	int ret;
+
+	if (fio_file_open(f))
+		return fio_io_sync(td, f);
+
+	if (td_io_open_file(td, f))
+		return 1;
+
+	ret = fio_io_sync(td, f);
+	td_io_close_file(td, f);
+	return ret;
+}
+
 static inline void __update_tv_cache(struct thread_data *td)
 {
 	fio_gettime(&td->tv_cache, NULL);
@@ -390,6 +397,15 @@ static int break_on_this_error(struct thread_data *td, enum fio_ddir ddir,
 	return 0;
 }
 
+static void check_update_rusage(struct thread_data *td)
+{
+	if (td->update_rusage) {
+		td->update_rusage = 0;
+		update_rusage_stat(td);
+		fio_mutex_up(td->rusage_sem);
+	}
+}
+
 /*
  * The main verify engine. Runs over the writes we previously submitted,
  * reads the blocks back in, and checks the crc/md5 of the data.
@@ -417,6 +433,8 @@ static void do_verify(struct thread_data *td, uint64_t verify_bytes)
 			break;
 	}
 
+	check_update_rusage(td);
+
 	if (td->error)
 		return;
 
@@ -428,6 +446,7 @@ static void do_verify(struct thread_data *td, uint64_t verify_bytes)
 		int ret2, full;
 
 		update_tv_cache(td);
+		check_update_rusage(td);
 
 		if (runtime_exceeded(td, &td->tv_cache)) {
 			__update_tv_cache(td);
@@ -581,6 +600,8 @@ sync_done:
 			break;
 	}
 
+	check_update_rusage(td);
+
 	if (!td->error) {
 		min_events = td->cur_depth;
 
@@ -636,6 +657,8 @@ static uint64_t do_io(struct thread_data *td)
 		int ret2, full;
 		enum fio_ddir ddir;
 
+		check_update_rusage(td);
+
 		if (td->terminate || td->done)
 			break;
 
@@ -790,6 +813,8 @@ sync_done:
 			if (!(b % td->o.thinktime_blocks)) {
 				int left;
 
+				io_u_quiesce(td);
+
 				if (td->o.thinktime_spin)
 					usec_spin(td->o.thinktime_spin);
 
@@ -800,8 +825,10 @@ sync_done:
 		}
 	}
 
+	check_update_rusage(td);
+
 	if (td->trim_entries)
-		log_err("fio: %d trim entries leaked?\n", td->trim_entries);
+		log_err("fio: %lu trim entries leaked?\n", td->trim_entries);
 
 	if (td->o.fill_device && td->error == ENOSPC) {
 		td->error = 0;
@@ -812,7 +839,7 @@ sync_done:
 
 		i = td->cur_depth;
 		if (i) {
-			ret = io_u_queued_complete(td, i, NULL);
+			ret = io_u_queued_complete(td, i, bytes_done);
 			if (td->o.fill_device && td->error == ENOSPC)
 				td->error = 0;
 		}
@@ -821,9 +848,11 @@ sync_done:
 			td_set_runstate(td, TD_FSYNCING);
 
 			for_each_file(td, f, i) {
-				if (!fio_file_open(f))
+				if (!fio_file_fsync(td, f))
 					continue;
-				fio_io_sync(td, f);
+
+				log_err("fio: end_fsync failed for file %s\n",
+								f->file_name);
 			}
 		}
 	} else
@@ -840,13 +869,9 @@ sync_done:
 
 static void cleanup_io_u(struct thread_data *td)
 {
-	struct flist_head *entry, *n;
 	struct io_u *io_u;
 
-	flist_for_each_safe(entry, n, &td->io_u_freelist) {
-		io_u = flist_entry(entry, struct io_u, list);
-
-		flist_del(&io_u->list);
+	while ((io_u = io_u_qpop(&td->io_u_freelist)) != NULL) {
 
 		if (td->io_ops->io_u_free)
 			td->io_ops->io_u_free(td, io_u);
@@ -855,6 +880,10 @@ static void cleanup_io_u(struct thread_data *td)
 	}
 
 	free_io_mem(td);
+
+	io_u_rexit(&td->io_u_requeues);
+	io_u_qexit(&td->io_u_freelist);
+	io_u_qexit(&td->io_u_all);
 }
 
 static int init_io_u(struct thread_data *td)
@@ -862,12 +891,11 @@ static int init_io_u(struct thread_data *td)
 	struct io_u *io_u;
 	unsigned int max_bs, min_write;
 	int cl_align, i, max_units;
-	int data_xfer = 1;
+	int data_xfer = 1, err;
 	char *p;
 
 	max_units = td->o.iodepth;
-	max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]);
-	max_bs = max(td->o.max_bs[DDIR_TRIM], max_bs);
+	max_bs = td_max_bs(td);
 	min_write = td->o.min_bs[DDIR_WRITE];
 	td->orig_buffer_size = (unsigned long long) max_bs
 					* (unsigned long long) max_units;
@@ -875,6 +903,25 @@ static int init_io_u(struct thread_data *td)
 	if ((td->io_ops->flags & FIO_NOIO) || !(td_read(td) || td_write(td)))
 		data_xfer = 0;
 
+	err = 0;
+	err += io_u_rinit(&td->io_u_requeues, td->o.iodepth);
+	err += io_u_qinit(&td->io_u_freelist, td->o.iodepth);
+	err += io_u_qinit(&td->io_u_all, td->o.iodepth);
+
+	if (err) {
+		log_err("fio: failed setting up IO queues\n");
+		return 1;
+	}
+
+	/*
+	 * if we may later need to do address alignment, then add any
+	 * possible adjustment here so that we don't cause a buffer
+	 * overflow later. this adjustment may be too much if we get
+	 * lucky and the allocator gives us an aligned address.
+	 */
+	if (td->o.odirect || td->o.mem_align || (td->io_ops->flags & FIO_RAWIO))
+		td->orig_buffer_size += page_mask + td->o.mem_align;
+
 	if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
 		unsigned long bs;
 
@@ -912,7 +959,7 @@ static int init_io_u(struct thread_data *td)
 
 		io_u = ptr;
 		memset(io_u, 0, sizeof(*io_u));
-		INIT_FLIST_HEAD(&io_u->list);
+		INIT_FLIST_HEAD(&io_u->verify_list);
 		dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
 
 		if (data_xfer) {
@@ -932,7 +979,13 @@ static int init_io_u(struct thread_data *td)
 
 		io_u->index = i;
 		io_u->flags = IO_U_F_FREE;
-		flist_add(&io_u->list, &td->io_u_freelist);
+		io_u_qpush(&td->io_u_freelist, io_u);
+
+		/*
+		 * io_u never leaves this stack, used for iteration of all
+		 * io_u buffers.
+		 */
+		io_u_qpush(&td->io_u_all, io_u);
 
 		if (td->io_ops->io_u_init) {
 			int ret = td->io_ops->io_u_init(td, io_u);
@@ -1016,20 +1069,32 @@ static int keep_running(struct thread_data *td)
 		return 1;
 	}
 
-	if (ddir_rw_sum(td->io_bytes) < td->o.size)
+	if (td->o.size != -1ULL && ddir_rw_sum(td->io_bytes) < td->o.size) {
+		uint64_t diff;
+
+		/*
+		 * If the difference is less than the minimum IO size, we
+		 * are done.
+		 */
+		diff = td->o.size - ddir_rw_sum(td->io_bytes);
+		if (diff < td_max_bs(td))
+			return 0;
+
 		return 1;
+	}
 
 	return 0;
 }
 
-static int exec_string(const char *string)
+static int exec_string(struct thread_options *o, const char *string, const char *mode)
 {
-	int ret, newlen = strlen(string) + 1 + 8;
+	int ret, newlen = strlen(string) + strlen(o->name) + strlen(mode) + 9 + 1;
 	char *str;
 
 	str = malloc(newlen);
-	sprintf(str, "sh -c %s", string);
+	sprintf(str, "%s &> %s.%s.txt", string, o->name, mode);
 
+	log_info("%s : Saving output of %s in %s.%s.txt\n",o->name, mode, o->name, mode);
 	ret = system(str);
 	if (ret == -1)
 		log_err("fio: exec of cmd <%s> failed\n", str);
@@ -1046,22 +1111,24 @@ static void *thread_main(void *data)
 {
 	unsigned long long elapsed;
 	struct thread_data *td = data;
+	struct thread_options *o = &td->o;
 	pthread_condattr_t attr;
 	int clear_state;
+	int ret;
 
-	if (!td->o.use_thread) {
+	if (!o->use_thread) {
 		setsid();
 		td->pid = getpid();
 	} else
 		td->pid = gettid();
 
-	fio_local_clock_init(td->o.use_thread);
+	fio_local_clock_init(o->use_thread);
 
 	dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
 
-	INIT_FLIST_HEAD(&td->io_u_freelist);
-	INIT_FLIST_HEAD(&td->io_u_busylist);
-	INIT_FLIST_HEAD(&td->io_u_requeues);
+	if (is_backend)
+		fio_server_send_start(td);
+
 	INIT_FLIST_HEAD(&td->io_log_list);
 	INIT_FLIST_HEAD(&td->io_hist_list);
 	INIT_FLIST_HEAD(&td->verify_list);
@@ -1086,16 +1153,17 @@ static void *thread_main(void *data)
 	 * eating a file descriptor
 	 */
 	fio_mutex_remove(td->mutex);
+	td->mutex = NULL;
 
 	/*
 	 * A new gid requires privilege, so we need to do this before setting
 	 * the uid.
 	 */
-	if (td->o.gid != -1U && setgid(td->o.gid)) {
+	if (o->gid != -1U && setgid(o->gid)) {
 		td_verror(td, errno, "setgid");
 		goto err;
 	}
-	if (td->o.uid != -1U && setuid(td->o.uid)) {
+	if (o->uid != -1U && setuid(o->uid)) {
 		td_verror(td, errno, "setuid");
 		goto err;
 	}
@@ -1104,21 +1172,24 @@ static void *thread_main(void *data)
 	 * If we have a gettimeofday() thread, make sure we exclude that
 	 * thread from this job
 	 */
-	if (td->o.gtod_cpu)
-		fio_cpu_clear(&td->o.cpumask, td->o.gtod_cpu);
+	if (o->gtod_cpu)
+		fio_cpu_clear(&o->cpumask, o->gtod_cpu);
 
 	/*
 	 * Set affinity first, in case it has an impact on the memory
 	 * allocations.
 	 */
-	if (td->o.cpumask_set && fio_setaffinity(td->pid, td->o.cpumask) == -1) {
-		td_verror(td, errno, "cpu_set_affinity");
-		goto err;
+	if (o->cpumask_set) {
+		ret = fio_setaffinity(td->pid, o->cpumask);
+		if (ret == -1) {
+			td_verror(td, errno, "cpu_set_affinity");
+			goto err;
+		}
 	}
 
 #ifdef CONFIG_LIBNUMA
 	/* numa node setup */
-	if (td->o.numa_cpumask_set || td->o.numa_memmask_set) {
+	if (o->numa_cpumask_set || o->numa_memmask_set) {
 		int ret;
 
 		if (numa_available() < 0) {
@@ -1126,8 +1197,8 @@ static void *thread_main(void *data)
 			goto err;
 		}
 
-		if (td->o.numa_cpumask_set) {
-			ret = numa_run_on_node_mask(td->o.numa_cpunodesmask);
+		if (o->numa_cpumask_set) {
+			ret = numa_run_on_node_mask(o->numa_cpunodesmask);
 			if (ret == -1) {
 				td_verror(td, errno, \
 					"numa_run_on_node_mask failed\n");
@@ -1135,20 +1206,20 @@ static void *thread_main(void *data)
 			}
 		}
 
-		if (td->o.numa_memmask_set) {
+		if (o->numa_memmask_set) {
 
-			switch (td->o.numa_mem_mode) {
+			switch (o->numa_mem_mode) {
 			case MPOL_INTERLEAVE:
-				numa_set_interleave_mask(td->o.numa_memnodesmask);
+				numa_set_interleave_mask(o->numa_memnodesmask);
 				break;
 			case MPOL_BIND:
-				numa_set_membind(td->o.numa_memnodesmask);
+				numa_set_membind(o->numa_memnodesmask);
 				break;
 			case MPOL_LOCAL:
 				numa_set_localalloc();
 				break;
 			case MPOL_PREFERRED:
-				numa_set_preferred(td->o.numa_mem_prefer_node);
+				numa_set_preferred(o->numa_mem_prefer_node);
 				break;
 			case MPOL_DEFAULT:
 			default:
@@ -1159,6 +1230,9 @@ static void *thread_main(void *data)
 	}
 #endif
 
+	if (fio_pin_memory(td))
+		goto err;
+
 	/*
 	 * May alter parameters that init_io_u() will use, so we need to
 	 * do this first.
@@ -1169,29 +1243,30 @@ static void *thread_main(void *data)
 	if (init_io_u(td))
 		goto err;
 
-	if (td->o.verify_async && verify_async_init(td))
+	if (o->verify_async && verify_async_init(td))
 		goto err;
 
-	if (td->ioprio_set) {
-		if (ioprio_set(IOPRIO_WHO_PROCESS, 0, td->ioprio) == -1) {
+	if (o->ioprio) {
+		ret = ioprio_set(IOPRIO_WHO_PROCESS, 0, o->ioprio_class, o->ioprio);
+		if (ret == -1) {
 			td_verror(td, errno, "ioprio_set");
 			goto err;
 		}
 	}
 
-	if (td->o.cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt))
+	if (o->cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt))
 		goto err;
 
 	errno = 0;
-	if (nice(td->o.nice) == -1 && errno != 0) {
+	if (nice(o->nice) == -1 && errno != 0) {
 		td_verror(td, errno, "nice");
 		goto err;
 	}
 
-	if (td->o.ioscheduler && switch_ioscheduler(td))
+	if (o->ioscheduler && switch_ioscheduler(td))
 		goto err;
 
-	if (!td->o.create_serialize && setup_files(td))
+	if (!o->create_serialize && setup_files(td))
 		goto err;
 
 	if (td_io_init(td))
@@ -1200,16 +1275,16 @@ static void *thread_main(void *data)
 	if (init_random_map(td))
 		goto err;
 
-	if (td->o.exec_prerun) {
-		if (exec_string(td->o.exec_prerun))
-			goto err;
-	}
+	if (o->exec_prerun && exec_string(o, o->exec_prerun, (const char *)"prerun"))
+		goto err;
 
-	if (td->o.pre_read) {
+	if (o->pre_read) {
 		if (pre_read_files(td) < 0)
 			goto err;
 	}
 
+	fio_verify_init(td);
+
 	fio_gettime(&td->epoch, NULL);
 	fio_getrusage(&td->ru_start);
 	clear_state = 0;
@@ -1221,8 +1296,8 @@ static void *thread_main(void *data)
 		memcpy(&td->iops_sample_time, &td->start, sizeof(td->start));
 		memcpy(&td->tv_cache, &td->start, sizeof(td->start));
 
-		if (td->o.ratemin[DDIR_READ] || td->o.ratemin[DDIR_WRITE] ||
-				td->o.ratemin[DDIR_TRIM]) {
+		if (o->ratemin[DDIR_READ] || o->ratemin[DDIR_WRITE] ||
+				o->ratemin[DDIR_TRIM]) {
 		        memcpy(&td->lastrate[DDIR_READ], &td->bw_sample_time,
 						sizeof(td->bw_sample_time));
 		        memcpy(&td->lastrate[DDIR_WRITE], &td->bw_sample_time,
@@ -1256,8 +1331,8 @@ static void *thread_main(void *data)
 		if (td->error || td->terminate)
 			break;
 
-		if (!td->o.do_verify ||
-		    td->o.verify == VERIFY_NONE ||
+		if (!o->do_verify ||
+		    o->verify == VERIFY_NONE ||
 		    (td->io_ops->flags & FIO_UNIDIR))
 			continue;
 
@@ -1282,46 +1357,48 @@ static void *thread_main(void *data)
 	td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE];
 	td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM];
 
+	fio_unpin_memory(td);
+
 	fio_mutex_down(writeout_mutex);
 	if (td->bw_log) {
-		if (td->o.bw_log_file) {
+		if (o->bw_log_file) {
 			finish_log_named(td, td->bw_log,
-						td->o.bw_log_file, "bw");
+						o->bw_log_file, "bw");
 		} else
 			finish_log(td, td->bw_log, "bw");
 	}
 	if (td->lat_log) {
-		if (td->o.lat_log_file) {
+		if (o->lat_log_file) {
 			finish_log_named(td, td->lat_log,
-						td->o.lat_log_file, "lat");
+						o->lat_log_file, "lat");
 		} else
 			finish_log(td, td->lat_log, "lat");
 	}
 	if (td->slat_log) {
-		if (td->o.lat_log_file) {
+		if (o->lat_log_file) {
 			finish_log_named(td, td->slat_log,
-						td->o.lat_log_file, "slat");
+						o->lat_log_file, "slat");
 		} else
 			finish_log(td, td->slat_log, "slat");
 	}
 	if (td->clat_log) {
-		if (td->o.lat_log_file) {
+		if (o->lat_log_file) {
 			finish_log_named(td, td->clat_log,
-						td->o.lat_log_file, "clat");
+						o->lat_log_file, "clat");
 		} else
 			finish_log(td, td->clat_log, "clat");
 	}
 	if (td->iops_log) {
-		if (td->o.iops_log_file) {
+		if (o->iops_log_file) {
 			finish_log_named(td, td->iops_log,
-						td->o.iops_log_file, "iops");
+						o->iops_log_file, "iops");
 		} else
 			finish_log(td, td->iops_log, "iops");
 	}
 
 	fio_mutex_up(writeout_mutex);
-	if (td->o.exec_postrun)
-		exec_string(td->o.exec_postrun);
+	if (o->exec_postrun)
+		exec_string(o, o->exec_postrun, (const char *)"postrun");
 
 	if (exitall_on_terminate)
 		fio_terminate_threads(td->groupid);
@@ -1331,7 +1408,7 @@ err:
 		log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
 							td->verror);
 
-	if (td->o.verify_async)
+	if (o->verify_async)
 		verify_async_exit(td);
 
 	close_and_free_files(td);
@@ -1339,8 +1416,8 @@ err:
 	close_ioengine(td);
 	cgroup_shutdown(td, &cgroup_mnt);
 
-	if (td->o.cpumask_set) {
-		int ret = fio_cpuset_exit(&td->o.cpumask);
+	if (o->cpumask_set) {
+		int ret = fio_cpuset_exit(&o->cpumask);
 
 		td_verror(td, ret, "fio_cpuset_exit");
 	}
@@ -1348,9 +1425,12 @@ err:
 	/*
 	 * do this very late, it will log file closing as well
 	 */
-	if (td->o.write_iolog_file)
+	if (o->write_iolog_file)
 		write_iolog_close(td);
 
+	fio_mutex_remove(td->rusage_sem);
+	td->rusage_sem = NULL;
+
 	td_set_runstate(td, TD_EXITED);
 	return (void *) (uintptr_t) td->error;
 }
@@ -1479,12 +1559,19 @@ reaped:
 			exit_value++;
 
 		done_secs += mtime_since_now(&td->epoch) / 1000;
+		profile_td_exit(td);
 	}
 
 	if (*nr_running == cputhreads && !pending && realthreads)
 		fio_terminate_threads(TERMINATE_ALL);
 }
 
+static void do_usleep(unsigned int usecs)
+{
+	check_for_running_stats();
+	usleep(usecs);
+}
+
 /*
  * Main function for kicking off and reaping jobs, as needed.
  */
@@ -1494,14 +1581,21 @@ static void run_threads(void)
 	unsigned long spent;
 	unsigned int i, todo, nr_running, m_rate, t_rate, nr_started;
 
-	if (fio_pin_memory())
-		return;
-
 	if (fio_gtod_offload && fio_start_gtod_thread())
 		return;
+	
+	fio_idle_prof_init();
 
 	set_sig_handlers();
 
+	nr_thread = nr_process = 0;
+	for_each_td(td, i) {
+		if (td->o.use_thread)
+			nr_thread++;
+		else
+			nr_process++;
+	}
+
 	if (output_format == FIO_OUTPUT_NORMAL) {
 		log_info("Starting ");
 		if (nr_thread)
@@ -1556,6 +1650,9 @@ static void run_threads(void)
 		}
 	}
 
+	/* start idle threads before io threads start to run */
+	fio_idle_prof_start();
+
 	set_genesis_time();
 
 	while (todo) {
@@ -1594,6 +1691,9 @@ static void run_threads(void)
 
 			init_disk_util(td);
 
+			td->rusage_sem = fio_mutex_init(FIO_MUTEX_LOCKED);
+			td->update_rusage = 0;
+
 			/*
 			 * Set state to created. Thread will transition
 			 * to TD_INITIALIZED when it's done setting up.
@@ -1650,7 +1750,7 @@ static void run_threads(void)
 			if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
 				break;
 
-			usleep(100000);
+			do_usleep(100000);
 
 			for (i = 0; i < this_jobs; i++) {
 				td = map[i];
@@ -1701,25 +1801,18 @@ static void run_threads(void)
 
 		reap_threads(&nr_running, &t_rate, &m_rate);
 
-		if (todo) {
-			if (is_backend)
-				fio_server_idle_loop();
-			else
-				usleep(100000);
-		}
+		if (todo)
+			do_usleep(100000);
 	}
 
 	while (nr_running) {
 		reap_threads(&nr_running, &t_rate, &m_rate);
-
-		if (is_backend)
-			fio_server_idle_loop();
-		else
-			usleep(10000);
+		do_usleep(10000);
 	}
 
+	fio_idle_prof_stop();
+
 	update_io_ticks();
-	fio_unpin_memory();
 }
 
 void wait_for_disk_thread_exit(void)
@@ -1797,9 +1890,9 @@ int fio_backend(void)
 		return 0;
 
 	if (write_bw_log) {
-		setup_log(&agg_io_log[DDIR_READ], 0);
-		setup_log(&agg_io_log[DDIR_WRITE], 0);
-		setup_log(&agg_io_log[DDIR_TRIM], 0);
+		setup_log(&agg_io_log[DDIR_READ], 0, IO_LOG_TYPE_BW);
+		setup_log(&agg_io_log[DDIR_WRITE], 0, IO_LOG_TYPE_BW);
+		setup_log(&agg_io_log[DDIR_TRIM], 0, IO_LOG_TYPE_BW);
 	}
 
 	startup_mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
@@ -1810,6 +1903,7 @@ int fio_backend(void)
 		return 1;
 
 	set_genesis_time();
+	stat_init();
 	create_disk_util_thread();
 
 	cgroup_list = smalloc(sizeof(*cgroup_list));
@@ -1839,5 +1933,6 @@ int fio_backend(void)
 	fio_mutex_remove(startup_mutex);
 	fio_mutex_remove(writeout_mutex);
 	fio_mutex_remove(disk_thread_mutex);
+	stat_exit();
 	return exit_value;
 }