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From: | Gordan Bobic |
Subject: | [Gluster-devel] CPU usage in AFR |
Date: | Thu, 24 Dec 2009 23:51:44 +0000 |
User-agent: | Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.9.1.1) Gecko/20090721 Shredder/3.0b3 |
Hi,I'm noticing something that could be considered weird. I have a 3-node rootfs-on-gluster cluster, and I'm doing a big yum update on one of the nodes. On that node and one of the other nodes, glusterfsd is using about 10-15% CPU. But on the 3rd node, glusterfs is using < 0.3% CPU.
I'm guessing this has something to do with the way locking backup and fail-over is implemented (IIRC there is a master and a backup lock/state server, rather than replicating this information to all the servers). Can anyone hazard a guess and confirm or deny the possible cause of this discrepancy?
Gordan
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