On Jan 7, 2008, at 8:43 PM, Chris Olsen wrote:
>
> I deployed an app to a Linode 360 VPS, and have notices a huge
> fluctuation in performance, ie 50req/sec down to 2req/sec. Seeing
> as it
> was at 50 at one time I can't see the reason being in the code.
>
> I just wanted to find out if you people have had experiences like this
> and may have a solution. I don't really know where to start in find a
> solution for this, is it something I can fix, or is it the VPS server?
>
> Thanks-'
As far as I know linode uses User Mode Linux for it's VPS's. User
mode linux runs in userspace so VM's running under this system can be
affected by the 'bad neighbor' affect a lot easier then say a Xen
based VPS. So someone else on the same box is probably sucking up the
resources when you see slow times.
Either that or you may just be swapping a lot. 360Mb is not a lot for
a rails app vps and if you are hitting swap it will kill performance
badly.
Cheers-
- Ezra Zygmuntowicz
-- Founder & Software Architect
-- [EMAIL PROTECTED]
-- EngineYard.com
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