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Red Hat Bugzilla – Attachment 151091 Details for
Bug 234278
CFQ I/O scheduler causes excessive slab usage/system hangs
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[patch]
Patch from Jens Axboe attached
linux-2.6.9-cfq-limit-nrrequests.patch (text/plain), 802 bytes, created by
John Sobecki
on 2007-03-28 03:26:37 UTC
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Description:
Patch from Jens Axboe attached
Filename:
MIME Type:
Creator:
John Sobecki
Created:
2007-03-28 03:26:37 UTC
Size:
802 bytes
patch
obsolete
>--- linux-2.6.9/drivers/block/cfq-iosched.c~ 2007-02-21 22:01:17.000000000 +0100 >+++ linux-2.6.9/drivers/block/cfq-iosched.c 2007-02-21 22:02:22.000000000 +0100 >@@ -56,7 +56,6 @@ > struct list_head *crq_hash; > > unsigned int busy_queues; >- unsigned int max_queued; > > mempool_t *crq_pool; > >@@ -609,8 +608,6 @@ > > if (limit < 3) > limit = 3; >- else if (limit > cfqd->max_queued) >- limit = cfqd->max_queued; > > if (cfqq->queued[rw] > limit) > ret = 0; >@@ -723,13 +720,6 @@ > e->elevator_data = cfqd; > cfqd->queue = q; > >- /* >- * just set it to some high value, we want anyone to be able to queue >- * some requests. fairness is handled differently >- */ >- cfqd->max_queued = q->nr_requests; >- q->nr_requests = 8192; >- > cfqd->cfq_queued = cfq_queued; > cfqd->cfq_quantum = cfq_quantum; >
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