Basic support for dedupe

[fio.git] / options.c

diff --git a/options.c b/options.c
index ce955133eff6ddc3beda8ddcdd8af02725b7b621..593f717149050fac1d5b206b53a27b7139e44af3 100644 (file)
--- a/options.c
+++ b/options.c
@@ -1050,6 +1050,16 @@ static int str_buffer_compress_cb(void *data, unsigned long long *il)
        return 0;
 }
 
        return 0;
 }
 

+static int str_dedupe_cb(void *data, unsigned long long *il)
+{
+       struct thread_data *td = data;
+
+       td->flags |= TD_F_COMPRESS;
+       td->o.dedupe_percentage = *il;
+       td->o.refill_buffers = 1;
+       return 0;
+}
+

 static int str_verify_pattern_cb(void *data, const char *input)
 {
        struct thread_data *td = data;
 static int str_verify_pattern_cb(void *data, const char *input)
 {
        struct thread_data *td = data;


@@ -3256,6 +3266,18 @@ struct fio_option fio_options[FIO_MAX_OPTS] = {
                .category = FIO_OPT_C_IO,
                .group  = FIO_OPT_G_IO_BUF,
        },
                .category = FIO_OPT_C_IO,
                .group  = FIO_OPT_G_IO_BUF,
        },

+       {
+               .name   = "dedupe_percentage",
+               .lname  = "Dedupe percentage",
+               .type   = FIO_OPT_INT,
+               .cb     = str_dedupe_cb,
+               .maxval = 100,
+               .minval = 0,
+               .help   = "Percentage of buffers that are dedupable",
+               .interval = 1,
+               .category = FIO_OPT_C_IO,
+               .group  = FIO_OPT_G_IO_BUF,
+       },

        {
                .name   = "clat_percentiles",
                .lname  = "Completion latency percentiles",
        {
                .name   = "clat_percentiles",
                .lname  = "Completion latency percentiles",