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rc1aa1
2003 Jul 27
0
data=journal with large external journals
...al journal
volumes. The data volumes are mounted noatime,data=journal. This
configuration was chosen because users are uploading images to the
server and I thought that putting writes on an external volume would
improve read efficiency.
I'm running kernel 2.4.21 with Andrea Arcangeli's rc8aa1 patch set
(mostly for the elevator-lowlatency patches which fix a problem with
huge amounts of cpu being used by kswapd). This patch set also includes
the akpm jbd_refile_buffer patch to transaction.c.
The symptoms are that the system chugs along for hours until the load
suddenly shoots throug...