topic performance monitor in Operating System - Linux

performance monitor

mjsunil — Thu, 04 Mar 2004 03:00:46 GMT

Hi, I want to know if there is any good performance monitor tool for linux. I want to monitor the process usage of weblogic,iplanet,oracle9i and get the output in a graph and save it for future use. Also I find that the linux caches most of the memory say about 1.2GB from a total of 2GB RAM,and the oracle listner keeps crashing and the users feel that the server response is very slow. Is there any way we can tweak the system?

rgds - mjs

Re: performance monitor

Vitaly Karasik_1 — Thu, 04 Mar 2004 09:35:31 GMT

regarding tuning linux for oracle - I suggest you to start with http://www.puschitz.com/ and
http://otn.oracle.com

regarding monitoring - you have top, sar, iostat and others.

There is several top-like GUI utils - gtop, KDE System Monitor and so on.

As far as I remember, few years ago HP released Glance for linux.

Rgds,
vitaly

Re: performance monitor

Steven E. Protter — Thu, 04 Mar 2004 09:51:58 GMT

There is a Glance for Linux that requires a license and money.

I'm attaching my unadapted HP-UX script that does sar performance data collection. It WILL require adjustment, but if you take the time, I'll give you 10 points for notifying me in any of my threads.

Its a great script.

Also, gtop is built into the GNOME GUI and the top command provides decent data as well.

SEP

Re: performance monitor

Nobody's Hero — Thu, 04 Mar 2004 14:24:12 GMT

We use a free product called MRGT. You can find it with a search of mrgt. Web based performance monitor that graphs out data.

Re: performance monitor

Don_89 — Thu, 04 Mar 2004 16:27:04 GMT

If the Oracle listner keeps crashing the system, your memory/thread semaphores are probably not set correctly.. We have 11 9i servers and never had a problem using the following settings in /etc/sysctl.conf

net.ipv4.ip_local_port_range = 1024 65000
# Disables the magic-sysrq key
kernel.sysrq = 0
#Oracle 9i release 2 parameters
kernel.sem= 250 32000 100 128
fs.file-max=65536
kernel.shmmax=2147483648
kernel.shmmni=4096
kernel.shmall=2097152
fs.aio-max-size=2147483648

also our /etc/security/limits.conf looks like this..

oracle soft nofile 65536
oracle hard nofile 65536
oracle soft nproc 16384
oracle hard nproc 16384

change these files and do a sysctl -p

this will re-read the settings in the above files..

Re: performance monitor

Martin P.J. Zinser — Thu, 04 Mar 2004 22:06:50 GMT

Hi,

mentioned earlier

MRTG (Multi Router Traffic grapher)

http://people.ee.ethz.ch/~oetiker/webtools/mrtg/

also (drilling down more on the server)

Big brother

http://bb4.com/features.html

while this is more monitoring related, a number of the tools at

http://www.linuxlinks.com/Software/Monitoring/Load/index.shtml

are actually more analysis slanted.

HTH,

Martin

Re: performance monitor

dirk dierickx — Wed, 10 Mar 2004 07:40:02 GMT

Just as a little side note;
soon sarcheck (http://www.sarcheck.com) will also be available for linux.