Re: identifying bottlenecks

[Thomas <jade@ares.dyndns.biz>]

kamaraju kusumanchi wrote:

> Marc Brünink wrote:
>
> > Hi,
> >
> > I've an application which should be as fast as possible. Therefore 
> > I'm trying to identify the bottleneck of the system for this special 
> > program. The application just uses 50 % of the CPU according to top. 
> > So the bottleneck have to be somewhere else. Is there a program to 
> > monitor the usage of memory and hard drive throughput while this app 
> > is running? Some sort of "top" for memory and hard drive?
> >
> > Thanks
> > Marc
> What is the hardware info (cat /proc/cpuinfo)? In particular do you 
> have hyperthreading (HT) turned on/off? Which kernel are you using 
> (smp/non-smp/version)? Finally, What application is this?
>
> raju
I found some bottlenecks on my machine were caused by swapping.

I use gkrellm to monitor activity on cpu, harddisk (per partition) and mem.
If mem usage is very high, it is likely that the system will swap a lot, 
which is significantly slowing down the harddisk.
Using gkrellm i could estimate how much more ram i would need and 
upgraded. Now my machine is just smooth.

Greetings,
Thomas