[PATCH] Add support for specifying read/write mix workloads better

[fio.git] / fio-ini.c

diff --git a/fio-ini.c b/fio-ini.c
index f5297576faee0bb78af0f2c7f2285152007656aa..0fec342d4b65271387a2ca76c39df29d8f2f0c39 100644 (file)
--- a/fio-ini.c
+++ b/fio-ini.c
@@ -36,6 +36,8 @@
 #define DEF_FILE_SIZE          (1024 * 1024 * 1024UL)
 #define DEF_ZONE_SIZE          (0)
 #define DEF_ZONE_SKIP          (0)
+#define DEF_RWMIX_CYCLE                (500)
+#define DEF_RWMIX_READ         (50)
 
 static char fio_version_string[] = "fio 1.3";
 
@@ -282,7 +284,7 @@ err:
 
 int init_random_state(struct thread_data *td)
 {
-       unsigned long seed;
+       unsigned long seeds[4];
        int fd, num_maps, blocks;
 
        fd = open("/dev/urandom", O_RDONLY);
@@ -291,7 +293,7 @@ int init_random_state(struct thread_data *td)
                return 1;
        }
 
-       if (read(fd, &seed, sizeof(seed)) < (int) sizeof(seed)) {
+       if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
                td_verror(td, EIO);
                close(fd);
                return 1;
@@ -299,14 +301,15 @@ int init_random_state(struct thread_data *td)
 
        close(fd);
 
-       srand48_r(seed, &td->bsrange_state);
-       srand48_r(seed, &td->verify_state);
+       srand48_r(seeds[0], &td->bsrange_state);
+       srand48_r(seeds[1], &td->verify_state);
+       srand48_r(seeds[2], &td->rwmix_state);
 
        if (td->sequential)
                return 0;
 
        if (repeatable)
-               seed = DEF_RANDSEED;
+               seeds[3] = DEF_RANDSEED;
 
        blocks = (td->io_size + td->min_bs - 1) / td->min_bs;
        num_maps = blocks / BLOCKS_PER_MAP;
@@ -314,7 +317,7 @@ int init_random_state(struct thread_data *td)
        td->num_maps = num_maps;
        memset(td->file_map, 0, num_maps * sizeof(long));
 
-       srand48_r(seed, &td->random_state);
+       srand48_r(seeds[3], &td->random_state);
        return 0;
 }
 
@@ -640,7 +643,7 @@ static int str_iolog_cb(struct thread_data *td, char *file)
 
 int parse_jobs_ini(char *file)
 {
-       unsigned int prioclass, prio, cpu, global;
+       unsigned int prioclass, prio, cpu, global, il;
        unsigned long long ull;
        unsigned long ul1, ul2;
        struct thread_data *td;
@@ -781,6 +784,24 @@ int parse_jobs_ini(char *file)
                                fgetpos(f, &off);
                                continue;
                        }
+                       if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
+                               fgetpos(f, &off);
+                               continue;
+                       }
+                       if (!check_int(p, "rwmixread", &il)) {
+                               if (il > 100)
+                                       il = 100;
+                               td->rwmixread = il;
+                               fgetpos(f, &off);
+                               continue;
+                       }
+                       if (!check_int(p, "rwmixwrite", &il)) {
+                               if (il > 100)
+                                       il = 100;
+                               td->rwmixread = 100 - il;
+                               fgetpos(f, &off);
+                               continue;
+                       }
                        if (!check_range(p, "bsrange", &ul1, &ul2)) {
                                if (ul1 > ul2) {
                                        td->max_bs = ul1;
@@ -914,6 +935,8 @@ static int fill_def_thread(void)
        def_thread.stonewall = DEF_STONEWALL;
        def_thread.numjobs = DEF_NUMJOBS;
        def_thread.use_thread = DEF_USE_THREAD;
+       def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
+       def_thread.rwmixread = DEF_RWMIX_READ;
 #ifdef FIO_HAVE_DISK_UTIL
        def_thread.do_disk_util = 1;
 #endif