lkml.org 
[lkml]   [2017]   [Dec]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH IMPROVEMENT/BUGFIX 0/1] block, bfq: address starvation caused by tag consumption
Date
Hi Jens, all,
here's the patch I anticipated in my last email. It addresses
(serious) starvation problems caused by request-tag exhaustion, as
explained in more detail in the commit message. I started from the
solution in the function kyber_limit_depth, but then I had to define
more articulate limits, to counter starvation also in cases not
covered in kyber_limit_depth.

If this solution proves to be effective, I'm willing to port it
somehow to the other schedulers.

Thanks,
Paolo

Paolo Valente (1):
block, bfq: limit tags for writes and async I/O

block/bfq-iosched.c | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++
block/bfq-iosched.h | 12 +++++++++
2 files changed, 89 insertions(+)

--
2.15.1

\
 
 \ /
  Last update: 2017-12-27 13:16    [W:0.019 / U:0.872 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site