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тАО07-13-2006 08:52 AM
тАО07-13-2006 08:52 AM
2.6.9-34.ELsmp
/proc/cpuinfo says
cpu MHz : 1808.362
But the BIOS reports (and I know I purchased) 2.2Ghz. My grub line is
kernel /boot/vmlinuz-2.6.9-34.ELsmp ro root=LABEL=/ tsc numa=on
removing "tsc" doesn't change the reported values.
Any ideas why the kernel thinks these are 1.8Ghz CPUs?
Thanks
Solved! Go to Solution.
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тАО07-13-2006 09:48 AM
тАО07-13-2006 09:48 AM
Re: DL145 G2, /proc/cpuinfo reports 1.8Ghz, but BIOS says 2.2
Maybe the clock speeds on the system aren't set right, so what the CPU *can* run isn't really what's being run?
What does the "model name:" line say and what does the "cpu Mhz:" line say?
Mine is so exact it says 2800.204 for the "cpu Mhz:" line - which looks to me that it is a computed value - not a copied string.
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тАО07-13-2006 09:56 AM
тАО07-13-2006 09:56 AM
Re: DL145 G2, /proc/cpuinfo reports 1.8Ghz, but BIOS says 2.2
Here are some numbers.
processor : 3
vendor_id : AuthenticAMD
cpu family : 15
model : 33
model name : Dual Core AMD Opteron(tm) Processor 275
stepping : 2
cpu MHz : 1808.352
cache size : 1024 KB
I have a cluster of 18 of these machines and I am getting an array of different values. Here they are across the cluster.
cpu MHz : 1808.441
cpu MHz : 1808.441
cpu MHz : 2009.289
cpu MHz : 2009.292
cpu MHz : 2210.199
cpu MHz : 2009.262
cpu MHz : 2009.280
cpu MHz : 1808.360
cpu MHz : 2210.221
cpu MHz : 1808.439
cpu MHz : 2009.280
cpu MHz : 2009.267
cpu MHz : 2009.280
cpu MHz : 1808.342
cpu MHz : 1808.345
cpu MHz : 1808.352
cpu MHz : 1808.359
cpu MHz : 1808.352
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тАО07-13-2006 10:03 AM
тАО07-13-2006 10:03 AM
Re: DL145 G2, /proc/cpuinfo reports 1.8Ghz, but BIOS says 2.2
The Opterons are "2200+" - that speed is not a "speed" - that's just a comparable term so that you can see what performance an Opteron will do compared to an Intel...
[pregnant pause]
[crickets]
The speed of an Opteron 2200 is:
1.8 Ghz!
So, I think in your cluster of stuff, you've got a "2200" and a "2400" and a "2600" to explain your various speeds.
HTH
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тАО07-13-2006 10:13 AM
тАО07-13-2006 10:13 AM
Re: DL145 G2, /proc/cpuinfo reports 1.8Ghz, but BIOS says 2.2
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тАО07-13-2006 10:41 AM
тАО07-13-2006 10:41 AM
Re: DL145 G2, /proc/cpuinfo reports 1.8Ghz, but BIOS says 2.2
time.c: Using 3.579545 MHz PM timer.
time.c: Detected 2210.218 MHz processor.
time.c: Using PM based timekeeping.
Although a few of them are using a different timer.
time.c: Using 25.000000 MHz HPET timer.
time.c: Detected 2210.315 MHz processor.
time.c: Using HPET based timekeeping.
Maybe CPU throttling?
Tim
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тАО07-13-2006 10:49 AM
тАО07-13-2006 10:49 AM
Re: DL145 G2, /proc/cpuinfo reports 1.8Ghz, but BIOS says 2.2
There actually is a daemon service running that does exactly what you're talking about that showed up in RH version 4 ( I think ). I f I remember correctly, I turned it off on my server farm. But, at the moment - I can't remember the name of that process that starts in the /etc/rcx.d area...
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тАО07-13-2006 11:56 AM
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тАО07-14-2006 03:46 AM
тАО07-14-2006 03:46 AM