Hi Marc,

Probably.  I was writing to malahal in irc that we have code changes that
will reduce lock contention for xprt->xp_lock a LOT, and more changes coming 
that
will address latency in dispatch and reduce locking in SAL.  The first
of those changes will be coming in hopefully still this week.

One thing I think could be out of whack is the lru lane selector, I cand
send a hotfix if we have a skewed object-lane distribution in LRU.  
Alternatively,
there is tuning for #partitions and the size of a per-partition hash table in
both the cache_inode "hash" and HashTable (used a lot of other places) which
could apply, if that's the bottleneck.

Do you have a trivial reproducer to experiment with?

Matt

----- "Marc Eshel" <es...@us.ibm.com> wrote:

> Hi Matt,
> I see bad perfromance when stating milloins of files, the inode cache
> is set to 1.5 million. Are there any configuration changes that I can
> make to the inode cache, even code changes of some hard coded values
> that will help with performance of big nuber of files?
> Thanks , Marc.

-- 
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 
cel.  734-216-5309 

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