Re: 2.6.20-rc2+: CFQ halving disk throughput.

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Jens Axboe wrote:

On Mon, Jan 01 2007, Andrew Morton wrote:

The patch would appear to need this fix:

--- a/block/cfq-iosched.c~a
+++ a/block/cfq-iosched.c
@@ -592,7 +592,7 @@ static int cfq_allow_merge(request_queue
 	if (cfqq == RQ_CFQQ(rq))
 		return 1;
- return 1;
+	return 0;
 }
static inline void
_

But that might not fix things...

Yeah it is, but I don't think it'll fix it (if anything, it'll be more
conservative).

(to possibly save others from trying -- no, doesn't fix any)

Rene.
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