Lustre discuss - Feb 2008 - ptlrpcd

Hi all,

anybody knows what  ptlrpcd  is good for, what it might be doing? I''ve 
seen it eating 100% CPU on OSS where I reformated an OST, but also in 
other circumstances.

Regards,
Thomas

Thomas Roth wrote:
> Hi all,
> 
> anybody knows what  ptlrpcd  is good for, what it might be doing?
I''ve
> seen it eating 100% CPU on OSS where I reformated an OST, but also in 
> other circumstances.
> 
Check the syslog & console logs - when we''ve seen this it was
because
Lustre had LBUG''d on that node.

Nic

Thomas,
To my knowledge, ''ptlrpcd'' is a thread that''s
responsible for pushing
asynchronous rpc requests to various places.  It is also tasked with 
receiving the replies to those requests. 
I imagine the OSS has a lot of outstanding async rpc''s which need to be
continually processed.  It''s just a hunch.. I haven''t dug
around in the
OSS enough to know exactly what''s going on.
paul

Nicholas Henke wrote:
> Thomas Roth wrote:
>   
>> Hi all,
>>
>> anybody knows what  ptlrpcd  is good for, what it might be doing?
I''ve
>> seen it eating 100% CPU on OSS where I reformated an OST, but also in 
>> other circumstances.
>>
>>     
>
> Check the syslog & console logs - when we''ve seen this it was
because
> Lustre had LBUG''d on that node.
>
> Nic
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