Re: CMA allocation failure and Latency issue

[Michal Hocko]

[Cc linux-mm and lkml]

Please do not use html emails, thanks!

On Thu 07-03-19 13:28:59, Pankaj Suryawanshi wrote:
> Hello,
> 
> I am facing issue related to CMA allocation failure of large size buffer.
> 
> I am beginner in Linux memory management. So I need your help to debug the
> issue, 
> 
> I have below questions 
> 
> 1. Why migration failed
> 2. Who pinned the pages, Which process pinned ,how to know ?
> 3. How to migrate pages forcefully so failure will avoid.(not preferable
> approach)
> etc.
> 
> Any help would be appreciated.
> 
> Please let me know if you require further information.
> 
> Regards,
> Pankaj

-- 
Michal Hocko
SUSE Labs