[OpenAFS] Re: accessing R/O volume becomes slow

Hans-Werner Paulsen hans@MPA-Garching.MPG.DE
Thu, 27 Nov 2014 11:26:22 +0100

On 11/26/2014 09:15 PM, Andrew Deason wrote:
> On Wed, 26 Nov 2014 10:51:00 +0100
> Hans-Werner Paulsen <hans@MPA-Garching.MPG.DE> wrote:
>> Checking the machine I see more than 5 million of afs_inode_cache slab
>> entries. Is this normal? Any hint how to proceed?
> That's not unusual if you are accessing a lot of files (say, about 5
> million recently accessed). But having a lot of vcaches in memory can
> cause certain operations to be slow; there was a fix just added in
> 1.6.10 to improve speed for a background cleanup process with lots of
> files (well, and PAGs): 94f1d4.
Yesterday, on another machine I created and deleted 4 million files on 
AFS. The number of afs_inode_cache slabs grew from 1 million to 5 
million. Today there are still 5 million entries.