diff options
| author | Susant Palai <spalai@redhat.com> | 2017-03-22 17:14:25 +0530 |
|---|---|---|
| committer | Raghavendra G <rgowdapp@redhat.com> | 2017-04-29 14:29:34 +0000 |
| commit | d51288540241d1f7785bb17bdc0702c0879087a9 (patch) | |
| tree | 8557ef36e61d0f3ff4bfea48d78e478971c36c57 /xlators/cluster/dht/src/dht-common.h | |
| parent | 8b2ef5076284e44a87698393c8094c925fa863fa (diff) | |
cluster/dht: Make rebalance throttle option tuned by number
Current rebalance throttle options: lazy/normal/aggressive may not always be
sufficient for the purpose of throttling. In our recent test, we observed for
certain setups, normal and aggressive modes behaved similarly consuming full
disk bandwidth. So in cases like this admin should be able to tune it
down(or vice versa) depending on the need.
Along with old throttle configurations, thread counts are tuned based on number.
e.g. gluster v set vol-name cluster-rebal.throttle 5.
Admin can tune up/down between 0 and the number of cores available.
Note: For heterogenous servers, validation will fail on the old server if "number"
is given for throttle configuration.
The message looks something like this:
"volume set: failed: Staging failed on vm2. Error: cluster.rebal-throttle should be {lazy|normal|aggressive}"
Test: Manual test by logging active thread number after reconfiguring throttle option.
testcase: tests/basic/distribute/throttle-rebal.t
Change-Id: I46e3cde546900307831028b344ecf601fd9b02c3
BUG: 1438370
Signed-off-by: Susant Palai <spalai@redhat.com>
Reviewed-on: https://review.gluster.org/16980
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
Diffstat (limited to 'xlators/cluster/dht/src/dht-common.h')
| -rw-r--r-- | xlators/cluster/dht/src/dht-common.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/xlators/cluster/dht/src/dht-common.h b/xlators/cluster/dht/src/dht-common.h index a756a1e579f..c8cec133960 100644 --- a/xlators/cluster/dht/src/dht-common.h +++ b/xlators/cluster/dht/src/dht-common.h @@ -36,6 +36,7 @@ #define DHT_ENTRY_SYNC_DOMAIN "dht.entry.sync" #define TIERING_MIGRATION_KEY "tiering.migration" #define DHT_LAYOUT_HASH_INVALID 1 +#define MAX_REBAL_THREADS sysconf(_SC_NPROCESSORS_ONLN) #define DHT_DIR_STAT_BLOCKS 8 #define DHT_DIR_STAT_SIZE 4096 @@ -614,7 +615,7 @@ struct dht_conf { /* Support size-weighted rebalancing (heterogeneous bricks). */ gf_boolean_t do_weighting; gf_boolean_t randomize_by_gfid; - char *dthrottle; + int dthrottle; dht_methods_t methods; |