@poddingue said: On the tuning suggestion, my guess, untested and purely from reading your paste, is that if something is genuinely holding sockets then raising tcp_mem buys headroom rather than stopping the accumulation, and your post#4 about throughput coming back on an xo_server restart points the same way. It might be worth a mention to @Team-XO-Backend, since they would know whether xo-server keeps sockets per pool. This is why I'm not increasing the numbers quite yet. Since this would only mask a potential issue. If an underlying cause is responsible, then this would be of interest. Thanks for chiming in!

@olivierlambert Thanks again for your input and recomendations! I'll verify that this is solved by having the LUN expanded to 8GB instead. Afterwards I'll mark your answer as the solution!

@dinhngtu said: I've taken a quick look, looks like it'll be solved as part of the Windows guest agent overhaul, so please look forward to that. Thanks for the info. I will be looking forward to that, indeed.

@MathieuRA I noticed you merged https://github.com/vatesfr/xen-orchestra/pull/9787 I just tried it. And it does seem to fix my original issue! Thank you! I am always impressed by you guys. Making testing and reporting upstream (to you guys) a good experience!

@olivierlambert I've finally had time to sit down and do some more troubleshooting. It seems that the issue is somehow tied to the backup-jobs themselves. Deploying XOA and subsequently importing XO-config from my XOCE instance. I continued to see several issues between both instances. These issues pretty much went away, when I re-did the backup-jobs from scratch. And are now much more in-line with what I'm excepting to see. This was done on both XOA Stable, Latest and XOCE I am no longer able to repoduce this at all. So my guess is that a bug of some sort got introduced with this being a constantly updated from source instance. Marking as solved. As I don't believe there is much more to do at this time.

Oh wow, that was fast! Thank you very much, I will check internally to be sure it will be reviewed soon