processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Pentium(R) Dual CPU E2160 @ 1.80GHz stepping : 13 microcode : 0xa3 cpu MHz : 1200.000 cache size : 1024 KB The above is part of the /proc/cpuinfo from a Lenovo desktop PC running Debian/Testing. The below is the same from an NEC PC also running Debian/Testing. Both systems are under light desktop load at the moment, and the above Lenovo system still ran at 1.2GHz even when the MySQL bug I previously mentioned was afflicting it. Any ideas on how I can get the Lenovo system running at full speed? According to sensors(1) the Lenovo has a CPU temperature of just over 60C on both cores while the NEC is at 40C and 45C for it's cores. So it appears that there may be some cooling issue on the Lenovo, this would be partly due to the Lenovo being a compact desktop case while the NEC is a medium tower case with a big vent in the side. It would also be partly due to the fact that the Lenovo system is in the home of someone who keeps their thermostat turned up high. But those factors probably don't explain a 20C difference, so I presume that the Lenovo has some dust. In any case as the first temperature threshold is 86C I presume that's not the cause of the clock difference. processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Pentium(R) Dual CPU E2160 @ 1.80GHz stepping : 13 microcode : 0xa1 cpu MHz : 1795.575 cache size : 1024 KB -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/
processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Pentium(R) Dual CPU E2160 @ 1.80GHz stepping : 13 microcode : 0xa3 cpu MHz : 1200.000 cache size : 1024 KB
The above is part of the /proc/cpuinfo from a Lenovo desktop PC running Debian/Testing. The below is the same from an NEC PC also running Debian/Testing.
Both systems are under light desktop load at the moment, and the above Lenovo system still ran at 1.2GHz even when the MySQL bug I previously mentioned was afflicting it. Any ideas on how I can get the Lenovo system running at full speed?
Are you running any of the cpufreq packages that might be limiting the speed on one of the systems? If you are running cpufrequitls, what does cpufreq-info say? James
On Sun, 1 Jul 2012, James Harper <james.harper@bendigoit.com.au> wrote:
Are you running any of the cpufreq packages that might be limiting the speed on one of the systems?
If you are running cpufrequitls, what does cpufreq-info say?
Thanks for that pointer. On the 1.2GHz system it says the following (along with lots of other things): current CPU frequency is 1.20 GHz (asserted by call to hardware). cpufreq stats: 1.80 GHz:6.27%, 1.20 GHz:93.73% (59743) On the 1.8GHz system it gives the following as it's entire output. So it seems that the NEC which always runs at 1.8GHz is the broken one in this regard. But I'm still chasing performance problems with the Lenovo... # cpufreq-info cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to cpufreq@vger.kernel.org, please. analyzing CPU 0: no or unknown cpufreq driver is active on this CPU maximum transition latency: 4294.55 ms. analyzing CPU 1: no or unknown cpufreq driver is active on this CPU maximum transition latency: 4294.55 ms. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/
On Sun, 1 Jul 2012, James Harper <james.harper@bendigoit.com.au> wrote:
Are you running any of the cpufreq packages that might be limiting the speed on one of the systems?
If you are running cpufrequitls, what does cpufreq-info say?
Thanks for that pointer. On the 1.2GHz system it says the following (along with lots of other things):
current CPU frequency is 1.20 GHz (asserted by call to hardware). cpufreq stats: 1.80 GHz:6.27%, 1.20 GHz:93.73% (59743)
On the 1.8GHz system it gives the following as it's entire output. So it seems that the NEC which always runs at 1.8GHz is the broken one in this regard. But I'm still chasing performance problems with the Lenovo...
What sort of performance problems? Do you think it's CPU speed related or was that just something you noticed while comparing systems? James
James Harper wrote:
processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Pentium(R) Dual CPU E2160 @ 1.80GHz stepping : 13 microcode : 0xa3 cpu MHz : 1200.000 cache size : 1024 KB
The above is part of the /proc/cpuinfo from a Lenovo desktop PC running Debian/Testing. The below is the same from an NEC PC also running Debian/Testing.
Both systems are under light desktop load at the moment, and the above Lenovo system still ran at 1.2GHz even when the MySQL bug I previously mentioned was afflicting it. Any ideas on how I can get the Lenovo system running at full speed?
Are you running any of the cpufreq packages that might be limiting the speed on one of the systems?
If you are running cpufrequitls, what does cpufreq-info say?
Packages are not needed; Ubuntu and IIRC Debian default to ondemand. $ grep 2>/dev/null -r --include '*governor*' . /sys/devices/system/cpu/ /sys/devices/system/cpu/cpuidle/current_governor_ro:menu /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor:ondemand /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors:interactive conservative ondemand userspace performance /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor:ondemand /sys/devices/system/cpu/cpu1/cpufreq/scaling_available_governors:interactive conservative ondemand userspace performance
participants (3)
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James Harper -
Russell Coker -
Trent W. Buck