Re: [PATCH BUGFIX IMPROVEMENT 0/7] boost throughput with synced I/O, reduce latency and fix a bandwidth bug

[Paolo Valente]

> Il giorno 24 giu 2019, alle ore 22:15, Srivatsa S. Bhat <srivatsa@xxxxxxxxxxxxx> ha scritto:
> 
> On 6/24/19 12:40 PM, Paolo Valente wrote:
>> Hi Jens,
>> this series, based against for-5.3/block, contains:
>> 1) The improvements to recover the throughput loss reported by
>>   Srivatsa [1] (first five patches)
>> 2) A preemption improvement to reduce I/O latency
>> 3) A fix of a subtle bug causing loss of control over I/O bandwidths
>> 
> 
> Thanks a lot for these patches, Paolo!
> 
> Would you mind adding:
> 
> Reported-by: Srivatsa S. Bhat (VMware) <srivatsa@xxxxxxxxxxxxx>
> Tested-by: Srivatsa S. Bhat (VMware) <srivatsa@xxxxxxxxxxxxx>
> 
> to the first 5 patches, as appropriate?
> 

With great pleasure!  (sorry for adding you only as tester in the
first place)

Thanks,
Paolo

> Thank you!
> 
>> 
>> [1] https://lkml.org/lkml/2019/5/17/755
>> 
>> Paolo Valente (7):
>>  block, bfq: reset inject limit when think-time state changes
>>  block, bfq: fix rq_in_driver check in bfq_update_inject_limit
>>  block, bfq: update base request service times when possible
>>  block, bfq: bring forward seek&think time update
>>  block, bfq: detect wakers and unconditionally inject their I/O
>>  block, bfq: preempt lower-weight or lower-priority queues
>>  block, bfq: re-schedule empty queues if they deserve I/O plugging
>> 
>> block/bfq-iosched.c | 952 ++++++++++++++++++++++++++++++--------------
>> block/bfq-iosched.h |  25 +-
>> 2 files changed, 686 insertions(+), 291 deletions(-)
>> 
> 
> Regards,
> Srivatsa
> VMware Photon OS