mbox series

[BUGFIX/IMPROVEMENTS,0/4] bfq: fix regressions on slow virtual machines

Message ID 20180531144508.3927-1-paolo.valente@linaro.org
Headers show
Series bfq: fix regressions on slow virtual machines | expand

Message

Paolo Valente May 31, 2018, 2:45 p.m. UTC 
Hi,
we have bumped into some BFQ latency regressions on slow virtual
machines. The patches in this series fix all these regressions, apart
from the first patch, which provides an indirect contribution, by
improving the description of the mechanisms affected by these
regressions.

Thanks,
Paolo and Davide


Davide Sapienza (2):
  block, bfq: increase weight-raising duration for interactive apps
  block, bfq: prevent soft_rt_next_start from being stuck at infinity

Paolo Valente (2):
  block, bfq: add description of weight-raising heuristics
  block, bfq: remove slow-system class

 block/bfq-iosched.c | 252 ++++++++++++++++++++++------------------------------
 block/bfq-iosched.h |  14 +--
 2 files changed, 109 insertions(+), 157 deletions(-)

--
2.16.1

Comments

Jens Axboe May 31, 2018, 2:56 p.m. UTC | #1 
On 5/31/18 8:45 AM, Paolo Valente wrote:
> Hi,

> we have bumped into some BFQ latency regressions on slow virtual

> machines. The patches in this series fix all these regressions, apart

> from the first patch, which provides an indirect contribution, by

> improving the description of the mechanisms affected by these

> regressions.


Pulled for 4.18, thanks Paolo.

-- 
Jens Axboe