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

Rene Herman
2007-01-02T10:26:13Z

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.