Christoph,
Am Mittwoch, 29. November 2017, 22:46:51 CET schrieb Christoph Hellwig:
> On Sun, Nov 26, 2017 at 02:10:53PM +0100, Richard Weinberger wrote:
> > MAX_SG is 64, used for blk_queue_max_segments(). This comes from
> > a0044bdf60c2 ("uml: batch I/O requests"). Is this still a good/sane
> >
On Sun, Nov 26, 2017 at 02:10:53PM +0100, Richard Weinberger wrote:
> MAX_SG is 64, used for blk_queue_max_segments(). This comes from
> a0044bdf60c2 ("uml: batch I/O requests"). Is this still a good/sane
> value for blk-mq?
blk-mq itself doesn't change the tradeoff.
> The driver does IO batching
On 26/11/17 13:56, Richard Weinberger wrote:
> Anton,
>
> please don't crop the CC list.
Apologies, I wanted to keep the discussion UML side until we have come
up with something.
Will not do it again.
>
> Am Sonntag, 26. November 2017, 14:41:12 CET schrieb Anton Ivanov:
>> I need to do some read
Anton,
please don't crop the CC list.
Am Sonntag, 26. November 2017, 14:41:12 CET schrieb Anton Ivanov:
> I need to do some reading on this.
>
> First of all - a stupid question: mq's primary advantage is in
> multi-core systems as it improves io and core utilization. We are still
> single-core
I need to do some reading on this.
First of all - a stupid question: mq's primary advantage is in
multi-core systems as it improves io and core utilization. We are still
single-core in UML and AFAIK this is likely to stay that way, right?
On 26/11/17 13:10, Richard Weinberger wrote:
> This is the
This is the first attempt to convert the UserModeLinux block driver
(UBD) to blk-mq.
While the conversion itself is rather trivial, a few questions
popped up in my head. Maybe you can help me with them.
MAX_SG is 64, used for blk_queue_max_segments(). This comes from
a0044bdf60c2 ("uml: batch I/O
