[Date Prev][Date Next] [Thread Prev][Thread Next]
[Thread Index]
[Date Index]
[Author Index]
Re: [dm-devel] BIO_RW_SYNCIO
- From: Mikulas Patocka <mpatocka redhat com>
- To: Vivek Goyal <vgoyal redhat com>
- Cc: Jens Axboe <axboe kernel dk>, dm-devel redhat com, Alasdair G Kergon <agk redhat com>
- Subject: Re: [dm-devel] BIO_RW_SYNCIO
- Date: Wed, 28 Jul 2010 08:35:53 -0400 (EDT)
> One more thing. Have you change the "quantum" tunable of CFQ? Looking
> at the traces of SYNC case, CFQ seems to be allowing up to 65 requests
> from a single cfq queue. But that does not happen. It is limited to 8
> requests max from a cfq queue.
>
> Which kernel version are you using?
>
> Thanks
> Vivek
I haven't changed it. It's 8 --- the default. I'm using 2.6.34.
Mikulas
[Date Prev][Date Next] [Thread Prev][Thread Next]
[Thread Index]
[Date Index]
[Author Index]