Re: [PATCH 2/2] ufs: don't use the fair tag sharings

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi,

在 2023/06/13 22:07, Bart Van Assche 写道:
On 5/18/23 00:55, Yu Kuai wrote:
在 2023/05/18 10:23, Bart Van Assche 写道:
On 5/17/23 18:49, Yu Kuai wrote:
Currently, fair share from hctx_may_queue() requires two
atomic_read(active_queues and active_requests), I think this smoothing
method can be placed into get_tag fail path, for example, the more times a disk failed to get tag in a period of time, the more tag this disk can
get, and all the information can be updated here(perhaps directly
record how many tags a disk can get, then hctx_may_queue() still only
require 2 atomic_read()).

That sounds interesting to me. Do you perhaps plan to implement this approach and to post it as a patch?

Of course, I'll try to send a RFC patch.

Hi Kuai,

Has this RFC patch already been posted or did I perhaps miss it?

Sorry for the delay, I finished switch from not share to fair share
directly verion, however, I found that it's not that simple to add a
smoothing method, and I'm stuck here for now.

I'll try to send a RFC verion soon, the smoothing method may not be
flexible, but I'll make sure it can work for your simple case that
2 device share tags, and one only issue few io while the other issue
lots of io.

Thanks,
Kuai

Thanks,

Bart.


.





[Index of Archives]     [Linux RAID]     [Linux SCSI]     [Linux ATA RAID]     [IDE]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Device Mapper]

  Powered by Linux