[LU-10807] ksocknal_reaper() jitter on b2_10

• Type: Bug
• Resolution: Duplicate
• Priority: Minor
• Severity: 3
• Assignee: John Hammond
• Reporter: John Hammond

Description

On b2_10, ksocknal_reaper() needs the following fix which landed to master as part of LU-9019 lnd: remove remaining cfs_time wrappers:

diff --git a/lnet/klnds/socklnd/socklnd_cb.c b/lnet/klnds/socklnd/socklnd_cb.c
index ceb8254..078638f 100644
--- a/lnet/klnds/socklnd/socklnd_cb.c
+++ b/lnet/klnds/socklnd/socklnd_cb.c
@@ -2627,7 +2627,7 @@ int ksocknal_reaper(void *arg)
                if (!ksocknal_data.ksnd_shuttingdown &&
                    list_empty(&ksocknal_data.ksnd_deathrow_conns) &&
                    list_empty(&ksocknal_data.ksnd_zombie_conns))
-                       schedule_timeout(cfs_duration_sec(timeout));
+                       schedule_timeout(cfs_time_seconds(timeout));
 
                set_current_state(TASK_RUNNING);
                remove_wait_queue(&ksocknal_data.ksnd_reaper_waitq, &wait);

Without it the ksocknal_reaper thread will be using 1% of a CPU at all times.

Issue Links

• is related to: LU-10707 TCP eth routed LNet traffic broken

Comments

[Andreas Dilger]

Fixed by patch https://review.whamcloud.com/32015 "LU-10707 ksocklnd: revert back to jiffies".

[Gerrit Updater]

John L. Hammond ([e-mail]) uploaded a new patch: https://review.whamcloud.com/31992
Subject: LU-10807 lnet: correct schedule timeout in ksocknal_reaper()
Project: fs/lustre-release
Branch: b2_10
Current Patch Set: 1
Commit: 766ab5c778063671e780963896477f8105945748