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authorJens Axboe <jens.axboe@oracle.com>2009-09-03 20:06:47 +0200
committerJens Axboe <jens.axboe@oracle.com>2009-09-11 14:34:33 +0200
commit01e97f6b897bf06ec83375d691f2f4d57f5b3a09 (patch)
tree72a99783584254b06b19dd41da7ecaf2d13760c3
parentb217a903ab6581cba04f88c44284dcdd2a752561 (diff)
block: enable rq CPU completion affinity by default
Test results here look good, and on big OLTP runs it has also shown to significantly increase cycles attributed to the database and cause a performance boost. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
-rw-r--r--include/linux/blkdev.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 98b45633a27..8bf1a10e4d8 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -463,7 +463,8 @@ struct request_queue
#define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
(1 << QUEUE_FLAG_CLUSTER) | \
- (1 << QUEUE_FLAG_STACKABLE))
+ (1 << QUEUE_FLAG_STACKABLE) | \
+ (1 << QUEUE_FLAG_SAME_COMP))
static inline int queue_is_locked(struct request_queue *q)
{