Dual CPU

[johnacb]

I am a very new user of Linux, just switched from Win2k.I am running a Dual 2.4g XEON CPUS, 1GB RAM Server using Red Hat 8 and 30 users accessing a Interbase 7 DB. I am having performance issues at the moment, and need to find how I can view the system Monitor to show Both CPU usage. Is there a way to do this. I can use The system monitor under Gnome but it only shows 1 CPU.

 

[Norwich]

The command you need it "top".

Howevr, it may be a configuration issue in that your distro is not running a multiprocessor kernel - run

cat /proc/cpuinfo

to see how many processors it lists. Eg. if it's just one, then it''l be something like:

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 5
model name : Pentium II (Deschutes)
stepping : 2
cpu MHz : 300.688
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr
bogomips : 599.65



If your just one, you'll need to install a multiproc kernel - that'll explain the lack of expected performance.

Found useful info in:

"

http://groups.google.com/groups?hl=...op+gtop+multiple+processors&sa=N&tab=wg"

 

[clonny2]

Once you have both CPU's look at the program
gkrellem. Very nice little app. RH8 has it built in.

 

[johnacb]

I ran the cat /proc/cpuinfo and it displays 4 processors.

Processor 0, 1, 2, and 3 . That is confusing??

 

[Norwich]

I've heard that the new multithreading processors can appear as two each.

 

[johnacb]

They are are not Multi Threading processors

Thanks

 

[danielhozac]

Are you sure about that? I recall reading somewhere that all Xeon processors with a CPU speed of over 2.4 GHz are multithreaded.

//Daniel

 

[johnacb]

Will investigate that . Thanks Daniel

Don't know if Redhat 8 handles Multithreading

 

[johnacb]

Seems the 2.4 XEONS are Hyperthreading, but how can I momitor what boyh CPUs are doing??

 

[Norwich]

Can you give us sample, snapshot output from the "top" command?

 

[boebox]

Johnach,

The top command will give you the info you are looking for, here is an example view.

My dual cpu Linux box.

0:34am up 30 days, 15:19, 6 users, load average: 0.03, 0.05, 0.01
105 processes: 104 sleeping, 1 running, 0 zombie, 0 stopped
CPU0 states: 0.42% user, 1.29% system, 0.0% nice, 97.31% idle
CPU1 states: 0.41% user, 1.27% system, 0.0% nice, 97.34% idle
Mem: 4109008K av, 2319512K used, 1789496K free, 0K shrd, 115632K buff
Swap: 2096464K av, 0K used, 2096464K free 1074056K cached


-Tony

 

[johnacb]

After running top command it shows 4 Processors so Hyperthreading is obviously working.

Thanks for the help everyone. I can see the power of LInux just need to think outside the Win2k Square.