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тАО07-15-2003 09:48 PM
тАО07-15-2003 09:48 PM
Linux Advance Server CPU resources.
I am newbie in Linux world.
I have just installed Linux Advance Server 2.1 in Proliant 580 server. After that I configured WebLogic Server on it.
Currently top is showing there are 8 CPU but actually it has only 2 CPUs. I chekced /proc/cpuinfo, it also showing 8 CPU. Also system load is getting high by Java processes.
See the following information.
[root@app1 linux-2.4]# uname -a
Linux app1 2.4.9-e.3smp #1 SMP Fri May 3 16:48:54 EDT 2002 i686 unknown
[root@app1 linux-2.4]# dmesg | grep -i processor
CPU: Physical Processor ID: 2
Booting processor 6/6 eip 2000
CPU: Physical Processor ID: 3
Booting processor 7/7 eip 2000
CPU: Physical Processor ID: 3
Total of 8 processors activated (22315.00 BogoMIPS).
Please let me know why this strange behaviour is showing in Linux. Is there any document or link avaiable where I will get WebLogic recommended Kernel Parameter information.
Thanks
SD
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тАО07-16-2003 06:27 PM
тАО07-16-2003 06:27 PM
Re: Linux Advance Server CPU resources.
Are you using Hyper Threading?
2.4.9-e.12 fix HT support.
And latest kernel is e.25
Good luck
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тАО07-17-2003 01:09 PM
тАО07-17-2003 01:09 PM
Re: Linux Advance Server CPU resources.
What processors do you have?
The top take the data about CPU from /proc/cpuinfo
In MP and the processort is HT then you
have more processors on every processor.
Caesar
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тАО09-27-2003 05:24 AM
тАО09-27-2003 05:24 AM
Re: Linux Advance Server CPU resources.
I noticed the dude says he has 2 CPUs, with HT you will see 4 CPUs. This doesn't explain why he is seeing 8, Unless there are 4 CPUs on the server.
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тАО09-27-2003 11:57 AM
тАО09-27-2003 11:57 AM
Re: Linux Advance Server CPU resources.
As for the Java giving a high load average, make sure you are using nice 'wait()'s. One of the Java apps we had was being nasty when waiting for information on a socket.