<div dir="ltr"><div><div><div>Hi Vasily,<br><br></div>Every weekend I do backups of all CT which take a lot of IO. It didn't affect much load average before 108 but as soon as I upgraded to 113, load got very high and nodes became sluggish during backups. It might be something else but I was looking for feedback if someone else had the same issue. I will continue to troubleshoot this issue. Meanwhile, I will upgrade them from 113.12 to 113.21 and see how it goes even if there's nothing related to this in the changelog.<br><br></div>Thanks for the reply,<br><br></div>Karl<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Mar 29, 2016 at 5:21 AM, Vasily Averin <span dir="ltr"><<a href="mailto:vvs@virtuozzo.com" target="_blank">vvs@virtuozzo.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Karl,<br>
<br>
no, we know nothing about possible performance degradation between<br>
042stab108.x and 042stab113.x kernels.<br>
High load average and CPU peaks are not a problems per se,<br>
it can be caused by increased activity on your nodes.<br>
<br>
Could you please explain in more details,<br>
why you believe you have a problem on your nodes?<br>
<br>
Thank you,<br>
Vasily Averin<br>
<div><div class="h5"><br>
On 28.03.2016 20:28, Karl Johnson wrote:<br>
> Hello,<br>
><br>
> Did anyone notice performance degradation after upgrading vzkernel to<br>
> 042stab113.X? I’ve been running 042stab108.5 on few nodes for a while<br>
> with no issue and upgraded to 042stab113.12 few weeks ago to fix an<br>
> important CVE and rebase to latest rhel6 kernel.<br>
><br>
> Since the upgrade from 108.5 to 113.12, I noticed much higher load<br>
> average on those upgraded OpenVZ nodes, mostly when IO is heavily<br>
> used. High CPU peaks are much more frequent. I would be curious to<br>
> know if someone else has the same issue. I wouldn’t downgrade because<br>
> of security fix PSBM-34244.<br>
><br>
> Regards,<br>
><br>
> Karl<br>
><br>
><br>
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