mirrors/haproxy
1
0
Fork 0
mirror of https://git.haproxy.org/git/haproxy.git/ synced 2025-08-07 23:56:57 +02:00
Code Issues Projects Releases Wiki Activity

MINOR: task: align the rq and wq locks

Browse Source 
We really don't want them to share the same cache line as they are
expected to be used in parallel. Adding a 64-byte alignment here shows
a performance increase of about 4.5% on task-intensive workloads with
2 to 4 threads.
This commit is contained in:
Willy Tarreau 2017-11-26 10:19:16 +01:00
parent 6d1222ce73
commit a24d1d0be4
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/task.c
View File

@ -40,8 +40,8 @@ unsigned int niced_tasks = 0; /* number of niced tasks in the run queue */
THREAD_LOCAL struct task *curr_task = NULL; /* task currently running or NULL */
__decl_hathreads(HA_SPINLOCK_T rq_lock); /* spin lock related to run queue */
__decl_hathreads(HA_SPINLOCK_T wq_lock); /* spin lock related to wait queue */
__decl_hathreads(HA_SPINLOCK_T __attribute__((aligned(64))) rq_lock); /* spin lock related to run queue */
__decl_hathreads(HA_SPINLOCK_T __attribute__((aligned(64))) wq_lock); /* spin lock related to wait queue */
static struct eb_root timers; /* sorted timers tree */
static struct eb_root rqueue; /* tree constituting the run queue */