Add sample zipf distribution randomizer

[fio.git] / fio.h

diff --git a/fio.h b/fio.h
index 139b9383f9fbd3ebaf1598b77ecbce244926465a..15ab308488c23b1f6608e1f682d70a4696adc506 100644 (file)
--- a/fio.h
+++ b/fio.h
@@ -39,6 +39,7 @@ struct thread_data;
 #include "server.h"
 #include "stat.h"
 #include "flow.h"
 #include "server.h"
 #include "stat.h"
 #include "flow.h"

+#include "lib/zipf.h"

 
 #ifdef FIO_HAVE_GUASI
 #include <guasi.h>
 
 #ifdef FIO_HAVE_GUASI
 #include <guasi.h>


@@ -177,6 +178,9 @@ struct thread_options {
        unsigned int bs_unaligned;
        unsigned int fsync_on_close;
 
        unsigned int bs_unaligned;
        unsigned int fsync_on_close;
 

+       unsigned int random_distribution;
+       double zipf_theta;
+

        unsigned int hugepage_size;
        unsigned int rw_min_bs;
        unsigned int thinktime;
        unsigned int hugepage_size;
        unsigned int rw_min_bs;
        unsigned int thinktime;


@@ -452,6 +456,11 @@ struct thread_data {
                struct frand_state __random_state;
        };
 
                struct frand_state __random_state;
        };
 

+       /*
+        * Used for zipf random distribution
+        */
+       struct zipf_state zipf;
+

        struct timeval start;   /* start of this loop */
        struct timeval epoch;   /* time job was started */
        struct timeval last_issue;
        struct timeval start;   /* start of this loop */
        struct timeval epoch;   /* time job was started */
        struct timeval last_issue;


@@ -815,4 +824,9 @@ enum {
        FIO_OUTPUT_NORMAL,
 };
 
        FIO_OUTPUT_NORMAL,
 };
 

+enum {
+       FIO_RAND_DIST_RANDOM    = 0,
+       FIO_RAND_DIST_ZIPF,
+};
+

 #endif
 #endif