[DRBD-user] Slow linstor queries after recent upgrade

[Łukasz Wąsikowski]

W dniu 08.05.2023 o 09:46, Roland Kammerer pisze:
> On Sun, May 07, 2023 at 02:45:53PM +0200, Łukasz Wąsikowski wrote:
>> Hi,
>>
>> I'm using Linstor on 5 node Proxmox 7.x cluster. After recent upgrade I've
>> got some performance issues with some linstor queries.
>>
>> Upgrade: linstor-common:amd64 (1.20.2-1, 1.22.1-1), python-linstor:amd64
>> (1.16.0-1, 1.18.0-1), linstor-client:amd64 (1.16.0-1, 1.18.0-1),
>> linstor-controller:amd64 (1.20.2-1, 1.22.1-1), linstor-satellite:amd64
>> (1.20.2-1, 1.22.1-1), linstor-proxmox:amd64 (6.1.0-1, 7.0.0-1)
> I'm pretty sure this isn't a LINSTOR issue but more a linstor-proxmox
> issue: Proxmox calls the plugins status API *a* *lot*. And in case of
> LINSTOR it isn't only that 1 nodes calls the controller a lot, but all
> the nodes query it separately. There is a "cache" in the Proxmox API and
> we even rolled our own that is stored persistently in the file system.
> With 7.0.0 we are in a situation where we can not use the cache as
> efficient as before, and I guess that shows. You can a) increase
> "statuscache", or you can downgrade to 6.1.0. 6.1.0 should be fine, the
> only thing that changed was improved storage information, but if you
> have been happy so far, please downgrade. I have an idea how we can keep
> the information in the cache more efficiently, but that will also
> require some development effort in LINSTOR itself.

That helped, thank you!

-- 
Best regards
Łukasz Wąsikowski