Merge branch 'dedupe_workset' of https://github.com/bardavid/fio

[fio.git] / t / dedupe.c

diff --git a/t/dedupe.c b/t/dedupe.c
index 68d31f19bd7b6a028975ece96918e6f9a014c8c0..8b659c76c71caca57be3e80c9b4ed94077fb79a8 100644 (file)
--- a/t/dedupe.c
+++ b/t/dedupe.c
@@ -473,11 +473,14 @@ static void show_chunk(struct chunk *c)
        }
 }
 
-static void show_stat(uint64_t nextents, uint64_t nchunks)
+static void show_stat(uint64_t nextents, uint64_t nchunks, uint64_t ndupextents)
 {
        double perc, ratio;
 
-       printf("Extents=%lu, Unique extents=%lu\n", (unsigned long) nextents, (unsigned long) nchunks);
+       printf("Extents=%lu, Unique extents=%lu", (unsigned long) nextents, (unsigned long) nchunks);
+       if (!bloom)
+               printf(" Duplicated extents=%lu", (unsigned long) ndupextents);
+       printf("\n");
 
        if (nchunks) {
                ratio = (double) nextents / (double) nchunks;
@@ -485,17 +488,20 @@ static void show_stat(uint64_t nextents, uint64_t nchunks)
        } else
                printf("De-dupe ratio: 1:infinite\n");
 
+       if (ndupextents)
+               printf("De-dupe working set at least: %3.2f%%\n", 100.0 * (double) ndupextents / (double) nextents);
+
        perc = 1.00 - ((double) nchunks / (double) nextents);
        perc *= 100.0;
        printf("Fio setting: dedupe_percentage=%u\n", (int) (perc + 0.50));
 
 }
 
-static void iter_rb_tree(uint64_t *nextents, uint64_t *nchunks)
+static void iter_rb_tree(uint64_t *nextents, uint64_t *nchunks, uint64_t *ndupextents)
 {
        struct fio_rb_node *n;
 
-       *nchunks = *nextents = 0;
+       *nchunks = *nextents = *ndupextents = 0;
 
        n = rb_first(&rb_root);
        if (!n)
@@ -507,6 +513,7 @@ static void iter_rb_tree(uint64_t *nextents, uint64_t *nchunks)
                c = rb_entry(n, struct chunk, rb_node);
                (*nchunks)++;
                *nextents += c->count;
+               *ndupextents += (c->count > 1);
 
                if (dump_output)
                        show_chunk(c);
@@ -530,7 +537,7 @@ static int usage(char *argv[])
 
 int main(int argc, char *argv[])
 {
-       uint64_t nextents = 0, nchunks = 0;
+       uint64_t nextents = 0, nchunks = 0, ndupextents = 0;
        int c, ret;
 
        arch_init(argv);
@@ -583,9 +590,9 @@ int main(int argc, char *argv[])
 
        if (!ret) {
                if (!bloom)
-                       iter_rb_tree(&nextents, &nchunks);
+                       iter_rb_tree(&nextents, &nchunks, &ndupextents);
 
-               show_stat(nextents, nchunks);
+               show_stat(nextents, nchunks, ndupextents);
        }
 
        fio_sem_remove(rb_lock);