hi Mitja,
Could you please give output of the following commands:
1) gluster volume info
2) gluster volume profile <volname> start
3) Wait while the CPU is high for 5-10 minutes
4) gluster volume profile <volname> info >
output-you-need-to-attach-to-this-mail.txt
4th command tells what are the operations that are issued a lot.
Pranith
On 06/01/2015 04:41 PM, Mitja Mihelič wrote:
Hi!
I am trying to set up a Wordpress cluster using GlusterFS used for
storage. Web nodes will access the same Wordpress install on a volume
mounted via FUSE from a 3 peer GlusterFS TSP.
I started with one web node and Wordpress on local storage. The load
average was constantly about 5. iotop showed about 300kB/s disk reads
or less. The load average was below 6.
When I mounted the GlusterFS volume to the web node the 1min load
average went over 300. Each of the 3 peers is transmitting about
10MB/s to my web node regardless of the load.
TSP peers are on 10Gbit NICs and the web node is on a 1Gbit NIC.
I'm out of ideas here... Could it be the network?
What should I look at for optimizing the network stack on the client?
Options set on TSP:
Options Reconfigured:
performance.cache-size: 4GB
network.ping-timeout: 15
cluster.quorum-type: auto
network.remote-dio: on
cluster.eager-lock: on
performance.stat-prefetch: off
performance.io-cache: off
performance.read-ahead: off
performance.quick-read: off
performance.cache-refresh-timeout: 4
performance.io-thread-count: 32
nfs.disable: on
Regards, Mitja
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