Bug 762622 (GLUSTER-890) - idle system but glusterfs uses 0.7-1% CPU
Summary: idle system but glusterfs uses 0.7-1% CPU
Keywords:
Status: CLOSED WONTFIX
Alias: GLUSTER-890
Product: GlusterFS
Classification: Community
Component: ib-verbs
Version: mainline
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Raghavendra G
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-05-05 20:36 UTC by Krishna Srinivas
Modified: 2015-12-01 16:45 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
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Regression: ---
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Description Krishna Srinivas 2010-05-05 19:53:04 UTC 
(In reply to comment #0)
> top command shows that no process is actively using glusterfs mountpoint. But
> glusterfs process still uses 0.7 to 1 % CPU. One of the servers was down, does
> reconnection code cause this CPU usage? (0.7% is significant) No other clues.
> Will attach gdb later and see if I can pick anything.

Now glusterfs is not using CPU anymore and the downed server is backup. So reconnection code uses 1% CPU all the time  when a server is down which is not a good behavior. Please see how it can be optimized.
Comment 1 Krishna Srinivas 2010-05-05 20:36:28 UTC 
top command shows that no process is actively using glusterfs mountpoint. But glusterfs process still uses 0.7 to 1 % CPU. One of the servers was down, does reconnection code cause this CPU usage? (0.7% is significant) No other clues. Will attach gdb later and see if I can pick anything.
Comment 2 Amar Tumballi 2011-01-20 06:53:48 UTC 
Bug timeout.. please open new bug if issue is spawned again..
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