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authorJeff Darcy <jdarcy@redhat.com>2016-12-08 16:24:15 -0500
committerVijay Bellur <vbellur@redhat.com>2017-01-30 19:13:58 -0500
commit1a95fc3036db51b82b6a80952f0908bc2019d24a (patch)
treeb983ac196a8165d5cb5e860a5ef97d3e9a41b5c9 /xlators/cluster/ec/src/ec.c
parent7f7d7a939e46b330a084d974451eee4757ba61b4 (diff)
core: run many bricks within one glusterfsd process
This patch adds support for multiple brick translator stacks running in a single brick server process. This reduces our per-brick memory usage by approximately 3x, and our appetite for TCP ports even more. It also creates potential to avoid process/thread thrashing, and to improve QoS by scheduling more carefully across the bricks, but realizing that potential will require further work. Multiplexing is controlled by the "cluster.brick-multiplex" global option. By default it's off, and bricks are started in separate processes as before. If multiplexing is enabled, then *compatible* bricks (mostly those with the same transport options) will be started in the same process. Change-Id: I45059454e51d6f4cbb29a4953359c09a408695cb BUG: 1385758 Signed-off-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-on: https://review.gluster.org/14763 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'xlators/cluster/ec/src/ec.c')
-rw-r--r--xlators/cluster/ec/src/ec.c19
1 files changed, 9 insertions, 10 deletions
diff --git a/xlators/cluster/ec/src/ec.c b/xlators/cluster/ec/src/ec.c
index 4d550176f19..7b16f8fd255 100644
--- a/xlators/cluster/ec/src/ec.c
+++ b/xlators/cluster/ec/src/ec.c
@@ -419,12 +419,11 @@ ec_launch_notify_timer (xlator_t *this, ec_t *ec)
void
ec_handle_up (xlator_t *this, ec_t *ec, int32_t idx)
{
- if (((ec->xl_notify >> idx) & 1) == 0) {
- ec->xl_notify |= 1ULL << idx;
- ec->xl_notify_count++;
- }
-
if (((ec->xl_up >> idx) & 1) == 0) { /* Duplicate event */
+ if (((ec->xl_notify >> idx) & 1) == 0) {
+ ec->xl_notify |= 1ULL << idx;
+ ec->xl_notify_count++;
+ }
ec->xl_up |= 1ULL << idx;
ec->xl_up_count++;
}
@@ -433,14 +432,14 @@ ec_handle_up (xlator_t *this, ec_t *ec, int32_t idx)
void
ec_handle_down (xlator_t *this, ec_t *ec, int32_t idx)
{
- if (((ec->xl_notify >> idx) & 1) == 0) {
- ec->xl_notify |= 1ULL << idx;
- ec->xl_notify_count++;
- }
-
if (((ec->xl_up >> idx) & 1) != 0) { /* Duplicate event */
gf_msg_debug (this->name, 0, "Child %d is DOWN", idx);
+ if (((ec->xl_notify >> idx) & 1) == 0) {
+ ec->xl_notify |= 1ULL << idx;
+ ec->xl_notify_count++;
+ }
+
ec->xl_up ^= 1ULL << idx;
ec->xl_up_count--;
}