[Linux-cluster] GFS cluster / DLM locking - Mostly idle but high load

[Gordan Bobic]

On Wed, 17 Oct 2007, Marc Grimme wrote:

>> I cannot find these files in /proc (that's where they are implied to be in
>> the docs). Can you please point me in the right direction?

> Sorry I new I forgot something ;-)
> http://www.opensharedroot.org/Members/marc/blog/blog-on-dlm/red-hat-dlm-__find_lock_by_id/influence-of-locktable-sizes-rsbtbl_size-lkbtbl_size

I found that page when I went looking for docs on the subject, but as 
per my other email, I don't appear to have /proc/cluster. :-O

>>> Do you have lot of small files?
>>
>> Yes. The problem doesn't seem to be so bad when files are in different
>> directories, but when lots of files are being written to the same
>> directory, the load goes up quite badly.
>
> Then this should help. Also enable lock_purging if not already done.

That doesn't seem to work for me. :-(

# gfs_tool settune / glock_purge 50
gfs_tool: can't change tunable parameter glock_purge: Invalid argument

Gordan