[Devel] Re: seems to be a flaw in cfq

[Vasily Tarasov]

Jens Axboe wrote:
> On Thu, Dec 21 2006, Vasily Tarasov wrote:
>   
>> Hello,
>>
>> On 2.6.19 "buffered randread" bizarre behavior persists. So it was fixed
>> somewhere in 2.6.20... Can you give me a guess, what changes in 2.6.20
>> cause this fix? The point is that we want to port it back to 2.6.18
>> (rhel-5), if possible.
>>     
>
> Is the 2.6.19 buffered randread case a CFQ only problem?
>   
Yes, deadline and anticipatory don't have no such problem at all.

Thanks.