Hi,
Recently we have observed some increased latency in CPU hotplug
event in CPU online path. For online latency we see that block
layer is executing notification handler for CPU_UP_PREPARE event
and this in turn waits for RCU grace period resulting (sometimes)
in an execution time of 15-20 ms fo
On 7/30/2016 7:54 AM, Akinobu Mita wrote:
> 2016-07-28 22:18 GMT+09:00 Khan, Imran :
>>
>> Hi,
>>
>> Recently we have observed some increased latency in CPU hotplug
>> event in CPU online path. For online latency we see that block
>> layer is executing notifi
On 8/1/2016 2:58 PM, Khan, Imran wrote:
> On 7/30/2016 7:54 AM, Akinobu Mita wrote:
>> 2016-07-28 22:18 GMT+09:00 Khan, Imran :
>>>
>>> Hi,
>>>
>>> Recently we have observed some increased latency in CPU hotplug
>>> event in CPU online p
On 8/5/2016 12:49 PM, Khan, Imran wrote:
> On 8/1/2016 2:58 PM, Khan, Imran wrote:
>> On 7/30/2016 7:54 AM, Akinobu Mita wrote:
>>> 2016-07-28 22:18 GMT+09:00 Khan, Imran :
>>>>
>>>> Hi,
>>>>
>>>> Recently we have observed some i
On 8/16/2016 11:23 AM, Khan, Imran wrote:
> On 8/5/2016 12:49 PM, Khan, Imran wrote:
>> On 8/1/2016 2:58 PM, Khan, Imran wrote:
>>> On 7/30/2016 7:54 AM, Akinobu Mita wrote:
>>>> 2016-07-28 22:18 GMT+09:00 Khan, Imran :
>>>>>
>>>>> Hi,
On 9/21/2016 9:26 PM, Akinobu Mita wrote:
> 2016-09-21 23:06 GMT+09:00 Khan, Imran :
>
>>>> commit 084ee793ec1ff4e2171b481642bfbdaa2e10664c
>>>> Author: Imran Khan
>>>> Date: Thu Sep 15 16:44:02 2016 +0530
>>>>
>>>> blk-mq: