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chksum: run 256K benchmark on demand, preserve chksum_stat_data #17946

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chksum: run 256K benchmark on demand, preserve chksum_stat_data #17946

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24 changes: 13 additions & 11 deletions module/zfs/zfs_chksum.c
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Original file line number Diff line number Diff line change
Expand Up @@ -155,11 +155,11 @@ chksum_run(chksum_stat_t *cs, abd_t *abd, void *ctx, int round,
switch (round) {
case 1: /* 1k */
size = 1<<10; loops = 128; break;
case 2: /* 2k */
case 2: /* 4k */
size = 1<<12; loops = 64; break;
case 3: /* 4k */
case 3: /* 16k */
size = 1<<14; loops = 32; break;
case 4: /* 16k */
case 4: /* 64k */
size = 1<<16; loops = 16; break;
case 5: /* 256k */
size = 1<<18; loops = 8; break;
Expand Down Expand Up @@ -212,6 +212,7 @@ chksum_benchit(chksum_stat_t *cs)
chksum_run(cs, abd, ctx, 2, &cs->bs4k);
chksum_run(cs, abd, ctx, 3, &cs->bs16k);
chksum_run(cs, abd, ctx, 4, &cs->bs64k);
chksum_run(cs, abd, ctx, 5, &cs->bs256k);
chksum_run(cs, abd, ctx, 6, &cs->bs1m);
abd_free(abd);

Expand Down Expand Up @@ -249,15 +250,16 @@ chksum_benchmark(void)
if (chksum_stat_limit == AT_DONE)
return;


/* count implementations */
chksum_stat_cnt = 1; /* edonr */
chksum_stat_cnt += 1; /* skein */
chksum_stat_cnt += sha256->getcnt();
chksum_stat_cnt += sha512->getcnt();
chksum_stat_cnt += blake3->getcnt();
chksum_stat_data = kmem_zalloc(
sizeof (chksum_stat_t) * chksum_stat_cnt, KM_SLEEP);
if (chksum_stat_limit == AT_STARTUP) {
chksum_stat_cnt = 1; /* edonr */
chksum_stat_cnt += 1; /* skein */
chksum_stat_cnt += sha256->getcnt();
chksum_stat_cnt += sha512->getcnt();
chksum_stat_cnt += blake3->getcnt();
chksum_stat_data = kmem_zalloc(
sizeof (chksum_stat_t) * chksum_stat_cnt, KM_SLEEP);
}

/* edonr - needs to be the first one here (slow CPU check) */
cs = &chksum_stat_data[cbid++];
Expand Down
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