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| author | Jeff Moyer <jmoyer@redhat.com> | 2009-10-23 17:14:50 -0400 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-10-26 14:34:47 +0100 |
| commit | df5fe3e8e13883f58dc97489076bbcc150789a21 (patch) | |
| tree | b05ce6760cd2b52e42dca22e3659a0255f4a4e4a /security/tomoyo/common.c | |
| parent | b2c18e1e08a5a9663094d57bb4be2f02226ee61c (diff) | |
cfq: merge cooperating cfq_queues
When cooperating cfq_queues are detected currently, they are allowed to
skip ahead in the scheduling order. It is much more efficient to
automatically share the cfq_queue data structure between cooperating processes.
Performance of the read-test2 benchmark (which is written to emulate the
dump(8) utility) went from 12MB/s to 90MB/s on my SATA disk. NFS servers
with multiple nfsd threads also saw performance increases.
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'security/tomoyo/common.c')
0 files changed, 0 insertions, 0 deletions