diff options
Diffstat (limited to 'meta-openembedded/meta-oe/recipes-benchmark/fio/fio/0002-lib-rand-Enhance-__fill_random_buf-using-the-multi-r.patch')
| -rw-r--r-- | meta-openembedded/meta-oe/recipes-benchmark/fio/fio/0002-lib-rand-Enhance-__fill_random_buf-using-the-multi-r.patch | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/meta-openembedded/meta-oe/recipes-benchmark/fio/fio/0002-lib-rand-Enhance-__fill_random_buf-using-the-multi-r.patch b/meta-openembedded/meta-oe/recipes-benchmark/fio/fio/0002-lib-rand-Enhance-__fill_random_buf-using-the-multi-r.patch deleted file mode 100644 index 16506566c2..0000000000 --- a/meta-openembedded/meta-oe/recipes-benchmark/fio/fio/0002-lib-rand-Enhance-__fill_random_buf-using-the-multi-r.patch +++ /dev/null @@ -1,136 +0,0 @@ -From 40ba7a05de6a08cfd382b116f76dbeaa7237df45 Mon Sep 17 00:00:00 2001 -From: Sungup Moon <sungup.moon@samsung.com> -Date: Mon, 8 Aug 2022 17:21:46 +0900 -Subject: [PATCH] lib/rand: Enhance __fill_random_buf using the multi random - seed - -The __fill_random_buf fills a buffer using the random 8byte integer to -write. But, this mechanism is depend on the CPU performance and could -not reach the max performance on the PCIe Gen5 devices. I have tested -128KB single worker sequential write on PCIe Gen5 NVMe, but it cannot -reach write throughput 6.0GB/s. - -So, I have reviewed the __fill_random_buf and focused the multiplier -dependency to generate the random number. So, I have changed -__fill_random_buf using the multiple-random-seed to reduce the -dependencies in the small data filling loop. - -I'll attach detail analysis result in the PR of this branch. - -Signed-off-by: Sungup Moon <sungup.moon@samsung.com> ---- - configure | 17 +++++++++++++++++ - lib/rand.c | 37 ++++++++++++++++++++++++++++++++++++- - 2 files changed, 53 insertions(+), 1 deletion(-) - -diff --git a/configure b/configure -index 36450df8..a2b9bd4c 100755 ---- a/configure -+++ b/configure -@@ -116,6 +116,10 @@ has() { - type "$1" >/dev/null 2>&1 - } - -+num() { -+ echo "$1" | grep -P -q "^[0-9]+$" -+} -+ - check_define() { - cat > $TMPC <<EOF - #if !defined($1) -@@ -174,6 +178,7 @@ libnfs="" - xnvme="" - libzbc="" - dfs="" -+seed_buckets="" - dynamic_engines="no" - prefix=/usr/local - -@@ -255,6 +260,8 @@ for opt do - ;; - --enable-asan) asan="yes" - ;; -+ --seed-buckets=*) seed_buckets="$optarg" -+ ;; - --help) - show_help="yes" - ;; -@@ -302,6 +309,7 @@ if test "$show_help" = "yes" ; then - echo "--dynamic-libengines Lib-based ioengines as dynamic libraries" - echo "--disable-dfs Disable DAOS File System support even if found" - echo "--enable-asan Enable address sanitizer" -+ echo "--seed-buckets= Number of seed buckets for the refill-buffer" - exit $exit_val - fi - -@@ -3273,6 +3281,15 @@ if test "$disable_tcmalloc" != "yes"; then - fi - fi - print_config "TCMalloc support" "$tcmalloc" -+if ! num "$seed_buckets"; then -+ seed_buckets=4 -+elif test "$seed_buckets" -lt 2; then -+ seed_buckets=2 -+elif test "$seed_buckets" -gt 16; then -+ seed_buckets=16 -+fi -+echo "#define CONFIG_SEED_BUCKETS $seed_buckets" >> $config_host_h -+print_config "seed_buckets" "$seed_buckets" - - echo "LIBS+=$LIBS" >> $config_host_mak - echo "GFIO_LIBS+=$GFIO_LIBS" >> $config_host_mak -diff --git a/lib/rand.c b/lib/rand.c -index 1e669116..1ce4a849 100644 ---- a/lib/rand.c -+++ b/lib/rand.c -@@ -95,7 +95,7 @@ void init_rand_seed(struct frand_state *state, uint64_t seed, bool use64) - __init_rand64(&state->state64, seed); - } - --void __fill_random_buf(void *buf, unsigned int len, uint64_t seed) -+void __fill_random_buf_small(void *buf, unsigned int len, uint64_t seed) - { - uint64_t *b = buf; - uint64_t *e = b + len / sizeof(*b); -@@ -110,6 +110,41 @@ void __fill_random_buf(void *buf, unsigned int len, uint64_t seed) - __builtin_memcpy(e, &seed, rest); - } - -+void __fill_random_buf(void *buf, unsigned int len, uint64_t seed) -+{ -+#define MAX_SEED_BUCKETS 16 -+ static uint64_t prime[MAX_SEED_BUCKETS] = {1, 2, 3, 5, -+ 7, 11, 13, 17, -+ 19, 23, 29, 31, -+ 37, 41, 43, 47}; -+ -+ uint64_t *b, *e, s[CONFIG_SEED_BUCKETS]; -+ unsigned int rest; -+ int p; -+ -+ /* -+ * Calculate the max index which is multiples of the seed buckets. -+ */ -+ rest = (len / sizeof(*b) / CONFIG_SEED_BUCKETS) * CONFIG_SEED_BUCKETS; -+ -+ b = buf; -+ e = b + rest; -+ -+ rest = len - (rest * sizeof(*b)); -+ -+ for (p = 0; p < CONFIG_SEED_BUCKETS; p++) -+ s[p] = seed * prime[p]; -+ -+ for (; b != e; b += CONFIG_SEED_BUCKETS) { -+ for (p = 0; p < CONFIG_SEED_BUCKETS; ++p) { -+ b[p] = s[p]; -+ s[p] = __hash_u64(s[p]); -+ } -+ } -+ -+ __fill_random_buf_small(b, rest, s[0]); -+} -+ - uint64_t fill_random_buf(struct frand_state *fs, void *buf, - unsigned int len) - { |