Hi,
On 14-04-2015 13:04, Johan Kooijman wrote:> Hi,
>
> Today I migrated a server form C6 to C7. The machine is dedicated for a
> couple of redis daemons. given the traffic etc, we see cpu0 being 100% in
> use immediately. No problem, had the same thing on the C6 server.
>
> So I pinned certain processes/irq's to other CPU's and made
irqbalance was
> monitoring things. That did solve the issue in C6, but not this time.
>
> The links below contain the output of /proc/interrupts. As you can see CPU0
> doesn't seem that busy
> http://pastebin.centos.org/23361/
> http://pastebin.centos.org/23366/
> The 2nd paste was about 60 seconds after the first one.
>
> Am I missing something here? This is a brand new C7 installation:
>
> [root at redis1 ~]# uname -a
> Linux redis1.gamebasics.lan 3.10.0-229.1.2.el7.x86_64 #1 SMP Fri Mar 27
> 03:04:26 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
>
> Hardware is a brand new supermicro X9DRW board with onboard igb NIC's
in
> use.
>
> Hope someone can help me!
Is it really just because of networking? The counters didn't seem very
high. You may watch /proc/softirqs for other sirqs too.
Marcelo