roundrobin Round robin over open files. This
is the default.
+ The string can have a number appended, indicating how
+ often to switch to a new file. So if option random:4 is
+ given, fio will switch to a new random file after 4 ios
+ have been issued.
+
ioengine=str Defines how the job issues io to the file. The following
types are defined:
*/
struct timeval timeout_end;
struct itimerval timer;
+
+ /*
+ * for fileservice, how often to switch to a new file
+ */
+ unsigned int file_service_nr;
+ unsigned int file_service_left;
+ struct fio_file *file_service_file;
};
/*
#endif
static int str_exitall_cb(void);
static int str_cpumask_cb(void *, unsigned int *);
+static int str_fst_cb(void *, const char *);
#define __stringify_1(x) #x
#define __stringify(x) __stringify_1(x)
{
.name = "file_service_type",
.type = FIO_OPT_STR,
+ .cb = str_fst_cb,
.off1 = td_var_offset(file_service_type),
.help = "How to select which file to service next",
.def = "roundrobin",
/*
* Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
*/
-static char *get_mmap_file(const char *str)
+static char *get_opt_postfix(const char *str)
{
char *p = strstr(str, ":");
struct thread_data *td = data;
if (td->mem_type == MEM_MMAPHUGE || td->mem_type == MEM_MMAP) {
- td->mmapfile = get_mmap_file(mem);
+ td->mmapfile = get_opt_postfix(mem);
if (td->mem_type == MEM_MMAPHUGE && !td->mmapfile) {
log_err("fio: mmaphuge:/path/to/file\n");
return 1;
return 0;
}
+static int str_fst_cb(void *data, const char *str)
+{
+ struct thread_data *td = data;
+ char *nr = get_opt_postfix(str);
+
+ td->file_service_nr = 1;
+ if (nr)
+ td->file_service_nr = atoi(nr);
+
+ return 0;
+}
+
/*
* This is our [ini] type file parser.
*/
static struct fio_file *get_next_file(struct thread_data *td)
{
+ struct fio_file *f;
+
if (!td->nr_open_files)
return NULL;
+ f = td->file_service_file;
+ if (f && f->open && td->file_service_left--)
+ return f;
+
if (td->file_service_type == FIO_FSERVICE_RR)
- return get_next_file_rr(td);
+ f = get_next_file_rr(td);
else
- return get_next_file_rand(td);
+ f = get_next_file_rand(td);
+
+ td->file_service_file = f;
+ td->file_service_left = td->file_service_nr - 1;
+ return f;
}
struct io_u *__get_io_u(struct thread_data *td)