Hi,
On 20/09/18 18:47, Mark Syms wrote:
Thanks for that Bob, we've been watching with interest the changes going in
upstream but at the moment we're not really in a position to take advantage of
them.
Due to hardware vendor support certification requirements XenServer can only
very occasion
Thanks for that Bob, we've been watching with interest the changes going in
upstream but at the moment we're not really in a position to take advantage of
them.
Due to hardware vendor support certification requirements XenServer can only
very occasionally make big kernel bumps that would affect
- Original Message -
> While testing GFS2 as a storage repository for virtual machines we
> discovered a number of scenarios where the performance was being
> pathologically poor.
>
> The scenarios are simplfied to the following -
>
> * On a single host in the cluster grow a number of f
When under heavy I/O load from two or more hosts the resource group
allocation can result in glocks being bounced around between hosts.
Follow the example of inodes and if we have local waiters when asked
to demote the glock on a resource group add a delay. Additionally,
track when last asked to de
While testing GFS2 as a storage repository for virtual machines we
discovered a number of scenarios where the performance was being
pathologically poor.
The scenarios are simplfied to the following -
* On a single host in the cluster grow a number of files to a
significant proportion of the
From: Tim Smith
When growing a number of files on the same cluster node from different
threads (e.g. fio with 20 or so jobs), all those threads pile into
gfs2_inplace_reserve() independently looking to claim a new resource
group and after a while they all synchronise, getting through the
gfs2_rgr
Hi,
On 20/09/18 14:53, Mark Syms wrote:
We have a couple of patches for GFS2 which address some performance
issues we’ve observed in our testing. What branch would you like the
patches to be based on top off (we have a custom patched build so
they’ll need to be realigned first).
Thanks,
We have a couple of patches for GFS2 which address some performance issues
we've observed in our testing. What branch would you like the patches to be
based on top off (we have a custom patched build so they'll need to be
realigned first).
Thanks,
Mark.
