Re: [lkp-robot] [mm/cma] 2b0f904a5a: fio.read_bw_MBps -16.1% regression

[Joonsoo Kim <js1304@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 1402 bytes --]

2018-04-12 10:12 GMT+09:00 Ye Xiaolong <xiaolong.ye@intel.com>:
> On 04/09, Joonsoo Kim wrote:
>>2018-04-09 14:56 GMT+09:00 Ye Xiaolong <xiaolong.ye@intel.com>:
>>> On 04/05, Joonsoo Kim wrote:
>>>>I may find the reason of this regression. Could you test this patch on
>>>>top of this patchset?
>>>>
>>>>http://lkml.kernel.org/r/<1522913236-15776-1-git-send-email-iamjoonsoo.kim@lge.com>
>>>
>>> It'd be better if you can provide your repo for this fix patch, it's more
>>> convenient for 0day to verify it.
>>
>>Okay! Could you check following git tree and branch to fix the
>>reported regression?
>>
>>https://github.com/JoonsooKim/linux.git cma-fixup-thp-next-20180403
>>
>>Related commits are:
>>f11152b mm/thp: don't count ZONE_MOVABLE as the target for freepage reserving
>>b2adb03 Revert "Revert "mm/cma: manage the memory of the CMA area by
>>using the ZONE_MOVABLE""
>>76148e2 Revert "Revert "mm/page_alloc: don't reserve ZONE_HIGHMEM for
>>ZONE_MOVABLE request""
>>
>>Base commit is '76148e2' and this regression happens on 'b2adb03'.
>>Fix is commit 'f11152b'.
>
> Sorry for the late, below is the comparison of commit f6572f9cd248df2c, 2b0f904a5a,
> and fix commit f11152b, seems it doesn't help to recover the performance.

Really thanks for testing!

Could you give me /proc/zoneinfo dumped before/after this test
for all these three commits?

Thanks.