On 2019/8/14 10:23 下午, Heitor Alves de Siqueira wrote:
> Hi Coly,
>
> We've had users impacted by system stalls and were able to trace it back to
> the
> bcache priority_stats query. After investigating a bit further, it seems that
> the sorting step in the quantiles calculation can cause heavy
Hi Coly,
We've had users impacted by system stalls and were able to trace it back to the
bcache priority_stats query. After investigating a bit further, it seems that
the sorting step in the quantiles calculation can cause heavy CPU
contention. This has a severe performance impact on any task
On 2019/3/8 8:35 上午, Shile Zhang wrote:
>
> On 2019/3/7 23:44, Vojtech Pavlik wrote:
>> On Thu, Mar 07, 2019 at 11:36:18PM +0800, Coly Li wrote:
>>> On 2019/3/7 11:06 下午, Shile Zhang wrote:
On 2019/3/7 18:34, Coly Li wrote:
> On 2019/3/7 1:15 下午, shile.zh...@linux.alibaba.com wrote:
On 2019/3/7 23:44, Vojtech Pavlik wrote:
On Thu, Mar 07, 2019 at 11:36:18PM +0800, Coly Li wrote:
On 2019/3/7 11:06 下午, Shile Zhang wrote:
On 2019/3/7 18:34, Coly Li wrote:
On 2019/3/7 1:15 下午, shile.zh...@linux.alibaba.com wrote:
From: Shile Zhang
Read
On Thu, Mar 07, 2019 at 11:36:18PM +0800, Coly Li wrote:
> On 2019/3/7 11:06 下午, Shile Zhang wrote:
> >
> > On 2019/3/7 18:34, Coly Li wrote:
> >> On 2019/3/7 1:15 下午, shile.zh...@linux.alibaba.com wrote:
> >>> From: Shile Zhang
> >>>
> >>> Read /sys/fs/bcache//cacheN/priority_stats can take
On 2019/3/7 11:06 下午, Shile Zhang wrote:
>
> On 2019/3/7 18:34, Coly Li wrote:
>> On 2019/3/7 1:15 下午, shile.zh...@linux.alibaba.com wrote:
>>> From: Shile Zhang
>>>
>>> Read /sys/fs/bcache//cacheN/priority_stats can take very long
>>> time with huge cache after long run.
>>>
>>> Signed-off-by:
On 2019/3/7 18:34, Coly Li wrote:
On 2019/3/7 1:15 下午, shile.zh...@linux.alibaba.com wrote:
From: Shile Zhang
Read /sys/fs/bcache//cacheN/priority_stats can take very long
time with huge cache after long run.
Signed-off-by: Shile Zhang
Hi Shile,
Do you test your change ? It will be
On 2019/3/7 1:15 下午, shile.zh...@linux.alibaba.com wrote:
> From: Shile Zhang
>
> Read /sys/fs/bcache//cacheN/priority_stats can take very long
> time with huge cache after long run.
>
> Signed-off-by: Shile Zhang
Hi Shile,
Do you test your change ? It will be helpful with more performance
From: Shile Zhang
Read /sys/fs/bcache//cacheN/priority_stats can take very long
time with huge cache after long run.
Signed-off-by: Shile Zhang
---
drivers/md/bcache/sysfs.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
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