My rule of thumb is >50% = upgrade.
I wouldn't argue with 25% either.
We see a % CPU usage which updates every second. I don't know if it's a
1 second average, or a rolling 5 second average, or whatever. Either
way there could be milliseconds within that average where all CPU time
is occupied and it wouldn't show in the display. If we're trying to
carry traffic which is sensitive to milliseconds of delay (VoIP) then my
feeling is ought to be safer to keep the CPU usage low.
I have no data to back this up. It's basically just the philosophy that
I'd rather have it and not need it than need it not have it.
------ Original Message ------
From: "Mathew Howard" <mhoward...@gmail.com>
To: "af" <af@afmug.com>
Sent: 4/5/2018 9:10:41 PM
Subject: Re: [AFMUG] CPU - when to upgrade
I start getting paranoid if I see more than about 25% CPU load on a
Mikrotik... whether or not that's actually having any impact on
performance, I don't know, but I suspect at 70% it is - I would
certainly upgrade it to something faster at that point. What model of
Mikrotik is it?
On Thu, Apr 5, 2018, 7:24 PM Rhys Cuff (Latrobe I.T)
<r...@latrobeit.com.au> wrote:
Hi Guys
When you have a router and cpu is hitting about 60 – 70% with traffic
load would that impact speeds?
I’ve got a few links that don’t seem to go as hard as they should, but
I can’t find the reason.
The routers are MikroTik and the radios (also highish cpu) are ubnt
with plenty of airtime free)
Hmmm, That’s another question, at what Airtime % will you start to see
impacted performance?
Thanks
Rhys
