On 01/11/2018 06:21 PM, Jamon Camisso via talk wrote:
On 11/01/18 16:59, Alvin Starr via talk wrote:
I cannot prove this yet but I believe there has been a big performance hit in the cloud providers.
I use amazon for a couple of lightly loaded servers
Attached is the traffic graph from the last 2 weeks.
Nothing has changed but for the reboot required by AWS as part of their patch roll out.
The reboot was at Tue Jan 2 09:02.
It may be just coincidence but the huge step-wise increase in base load is just crazy given nothing on my side changed but for the reboot.
So I take exception with Intel's comment that most folks will not notice the performance hit. When you say server, is this a VM or bare metal? Is it dedicated or how is it provisioned on AWS?
The reason I ask is that if it is a VM, it could very well be the case that it was migrated to another host that may have higher resource contention. For example, what does steal show up as when you watch in top during the perceived slowdowns?
Its a paravirt VM. The steal time is much less than 1% bouncing between 0 and 0.2 Yes it is possible that other VM's are stealing resources leaving less compute power for my instance but I have had extremely stable cpu utilization going back something like 2 months. But the step is significant within a matter of a day it went from 2.5% utilization to 17.4% utilization in 2 steps. My image is held up by the moderator so I posted here ( https://owncloud.netvel.net/s/G3HGQUEb5saLBSn )if your interested. The timing is suspect and I had another server that sees periodic work and it completely collapsed because of the change in performance at just the same time. A bit of searching shows that others are complaining about the same problem. -- Alvin Starr || land: (905)513-7688 Netvel Inc. || Cell: (416)806-0133 alvin@netvel.net ||