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authorKotresh HR <khiremat@redhat.com>2020-02-03 18:10:17 +0530
committerKotresh HR <khiremat@redhat.com>2020-02-07 12:00:19 +0530
commit8fad76650bd85463708f59d2518f5b764ae4c702 (patch)
treee72357381dffcdeb2d08fa59bca805eec21664c2 /xlators/features/bit-rot/src
parent2dbbdc92be205d12901ce2770570bbcb17040838 (diff)
bitrot: Make number of signer threads configurable
The number of signing process threads (glfs_brpobj) is set to 4 by default. The recommendation is to set it to number of cores available. This patch makes it configurable as follows gluster vol bitrot <volname> signer-threads <count> fixes: bz#1797869 Change-Id: Ia883b3e5e34e0bc8d095243508d320c9c9c58adc Signed-off-by: Kotresh HR <khiremat@redhat.com>
Diffstat (limited to 'xlators/features/bit-rot/src')
-rw-r--r--xlators/features/bit-rot/src/bitd/bit-rot.c45
-rw-r--r--xlators/features/bit-rot/src/bitd/bit-rot.h20
-rw-r--r--xlators/features/bit-rot/src/stub/bit-rot-stub-mem-types.h1
3 files changed, 45 insertions, 21 deletions
diff --git a/xlators/features/bit-rot/src/bitd/bit-rot.c b/xlators/features/bit-rot/src/bitd/bit-rot.c
index abb078b..a2f1c34 100644
--- a/xlators/features/bit-rot/src/bitd/bit-rot.c
+++ b/xlators/features/bit-rot/src/bitd/bit-rot.c
@@ -1717,22 +1717,26 @@ out:
return 0;
}
-/**
- * Initialize signer specific structures, spawn worker threads.
- */
-
static void
br_fini_signer(xlator_t *this, br_private_t *priv)
{
int i = 0;
- for (; i < BR_WORKERS; i++) {
+ if (priv == NULL)
+ return;
+
+ for (; i < priv->signer_th_count; i++) {
(void)gf_thread_cleanup_xint(priv->obj_queue->workers[i]);
}
+ GF_FREE(priv->obj_queue->workers);
pthread_cond_destroy(&priv->object_cond);
}
+/**
+ * Initialize signer specific structures, spawn worker threads.
+ */
+
static int32_t
br_init_signer(xlator_t *this, br_private_t *priv)
{
@@ -1752,7 +1756,12 @@ br_init_signer(xlator_t *this, br_private_t *priv)
goto cleanup_cond;
INIT_LIST_HEAD(&priv->obj_queue->objects);
- for (i = 0; i < BR_WORKERS; i++) {
+ priv->obj_queue->workers = GF_CALLOC(
+ priv->signer_th_count, sizeof(pthread_t), gf_br_mt_br_worker_t);
+ if (!priv->obj_queue->workers)
+ goto cleanup_obj_queue;
+
+ for (i = 0; i < priv->signer_th_count; i++) {
ret = gf_thread_create(&priv->obj_queue->workers[i], NULL,
br_process_object, this, "brpobj");
if (ret != 0) {
@@ -1769,7 +1778,9 @@ cleanup_threads:
for (i--; i >= 0; i--) {
(void)gf_thread_cleanup_xint(priv->obj_queue->workers[i]);
}
+ GF_FREE(priv->obj_queue->workers);
+cleanup_obj_queue:
GF_FREE(priv->obj_queue);
cleanup_cond:
@@ -1822,7 +1833,7 @@ br_rate_limit_signer(xlator_t *this, int child_count, int numbricks)
if (contribution == 0)
contribution = 1;
spec.rate = BR_HASH_CALC_READ_SIZE * contribution;
- spec.maxlimit = BR_WORKERS * BR_HASH_CALC_READ_SIZE;
+ spec.maxlimit = priv->signer_th_count * BR_HASH_CALC_READ_SIZE;
#endif
@@ -1841,11 +1852,16 @@ br_rate_limit_signer(xlator_t *this, int child_count, int numbricks)
static int32_t
br_signer_handle_options(xlator_t *this, br_private_t *priv, dict_t *options)
{
- if (options)
+ if (options) {
GF_OPTION_RECONF("expiry-time", priv->expiry_time, options, uint32,
error_return);
- else
+ GF_OPTION_RECONF("signer-threads", priv->signer_th_count, options,
+ uint32, error_return);
+ } else {
GF_OPTION_INIT("expiry-time", priv->expiry_time, uint32, error_return);
+ GF_OPTION_INIT("signer-threads", priv->signer_th_count, uint32,
+ error_return);
+ }
return 0;
@@ -1861,6 +1877,8 @@ br_signer_init(xlator_t *this, br_private_t *priv)
GF_OPTION_INIT("expiry-time", priv->expiry_time, uint32, error_return);
GF_OPTION_INIT("brick-count", numbricks, int32, error_return);
+ GF_OPTION_INIT("signer-threads", priv->signer_th_count, uint32,
+ error_return);
ret = br_rate_limit_signer(this, priv->child_count, numbricks);
if (ret)
@@ -2187,6 +2205,15 @@ struct volume_options options[] = {
.description = "Pause/Resume scrub. Upon resume, scrubber "
"continues from where it left off.",
},
+ {
+ .key = {"signer-threads"},
+ .type = GF_OPTION_TYPE_INT,
+ .default_value = BR_WORKERS,
+ .op_version = {GD_OP_VERSION_8_0},
+ .flags = OPT_FLAG_SETTABLE,
+ .description = "Number of signing process threads. As a best "
+ "practice, set this to the number of processor cores",
+ },
{.key = {NULL}},
};
diff --git a/xlators/features/bit-rot/src/bitd/bit-rot.h b/xlators/features/bit-rot/src/bitd/bit-rot.h
index a4d4fd7..8ac7dcd 100644
--- a/xlators/features/bit-rot/src/bitd/bit-rot.h
+++ b/xlators/features/bit-rot/src/bitd/bit-rot.h
@@ -30,12 +30,6 @@
#include <openssl/sha.h>
-/**
- * TODO: make this configurable. As a best practice, set this to the
- * number of processor cores.
- */
-#define BR_WORKERS 4
-
typedef enum scrub_throttle {
BR_SCRUB_THROTTLE_VOID = -1,
BR_SCRUB_THROTTLE_LAZY = 0,
@@ -108,12 +102,12 @@ struct br_child {
typedef struct br_child br_child_t;
struct br_obj_n_workers {
- struct list_head objects; /* queue of objects expired from the
- timer wheel and ready to be picked
- up for signing */
- pthread_t workers[BR_WORKERS]; /* Threads which pick up the objects
- from the above queue and start
- signing each object */
+ struct list_head objects; /* queue of objects expired from the
+ timer wheel and ready to be picked
+ up for signing */
+ pthread_t *workers; /* Threads which pick up the objects
+ from the above queue and start
+ signing each object */
};
struct br_scrubber {
@@ -209,6 +203,8 @@ struct br_private {
uint32_t expiry_time; /* objects "wait" time */
+ uint32_t signer_th_count; /* Number of signing process threads */
+
tbf_t *tbf; /* token bucket filter */
gf_boolean_t iamscrubber; /* function as a fs scrubber */
diff --git a/xlators/features/bit-rot/src/stub/bit-rot-stub-mem-types.h b/xlators/features/bit-rot/src/stub/bit-rot-stub-mem-types.h
index 40bcda1..9d93caf 100644
--- a/xlators/features/bit-rot/src/stub/bit-rot-stub-mem-types.h
+++ b/xlators/features/bit-rot/src/stub/bit-rot-stub-mem-types.h
@@ -29,6 +29,7 @@ enum br_mem_types {
gf_br_stub_mt_sigstub_t,
gf_br_mt_br_child_event_t,
gf_br_stub_mt_misc,
+ gf_br_mt_br_worker_t,
gf_br_stub_mt_end,
};