Matt,
Yes we are using VFS FSAL. I will re-run the workload after increasing the
limits.
Thanks.
Regards.
Krishna Harathi
On Sat, May 16, 2015 at 8:36 AM, Matt W. Benjamin <m...@cohortfs.com> wrote:
> Hi Krishna,
>
> If you're using a VFS-like FSAL, I wouldn't think you'd want to be
> hard limited to 4K open files.
>
> It could be useful to have more flexibility in (choice of?) LRU
> reclaim strategy, but to start with, I'd raise this limit (on
> Linux, /proc/sys/fs/nr_open, etc).
>
> Matt
>
> ----- "Krishna Harathi" <khara...@exablox.com> wrote:
>
> > To be clear, this comment cache_inode_lru.c did not help much.
> >
> >
> > /* Set high and low watermark for cache entries. This seems a
> > bit fishy, so come back and revisit this. */
> > lru_state.entries_hiwat = cache_param.entries_hwmark;
> > lru_state.entries_used = 0 ;
> >
> >
> >
> >
> > Regards.
> > Krishna Harathi
> >
> > On Fri, May 15, 2015 at 7:44 PM, Krishna Harathi <
> > khara...@exablox.com > wrote:
> >
> >
> >
> >
> > I am trying to determine the relation between the system imposed limit
> > of max FDs (4096 now) and
> > the Cache Inode HW Mark (100000 default).
> >
> >
> > In a test work load, I am getting errno 24 (too many open files) error
> > returned,
> > and here is our current settings.
> >
> >
> >
> > 15/05/2015 18:48:23 : epoch 5556a1e7 : OneBlox-0333 :
> > nfs-ganesha-12814[main] cache_inode_lru_pkginit :INODE LRU :INFO
> > :Attempting to increase soft limit from 1024 to hard limit of 4096
> > 15/05/2015 18:48:23 : epoch 5556a1e7 : OneBlox-0333 :
> > nfs-ganesha-12814[main] cache_inode_lru_pkginit :INODE LRU :INFO
> > :Setting the system-imposed limit on FDs to 4096
> >
> >
> >
> >
> > I looked at the related code in Cache_inode but could not determine
> > the relationship between
> > the system limit and cache_inode or how many file FDs Ganesha will try
> > to open.
> >
> >
> > Any help is (1) What is the system limit to be set, given the default
> > cache inode HWmark?
> > (2) For the given system limit, what is the cache inode setting. We
> > are using Ganesha 2.1.
> >
> >
> >
> >
> >
> > Regards.
> > Krishna Harathi
> >
> >
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> --
> Matt Benjamin
> CohortFS, LLC.
> 315 West Huron Street, Suite 140A
> Ann Arbor, Michigan 48103
>
> http://cohortfs.com
>
> tel. 734-761-4689
> fax. 734-769-8938
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>
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