BOINC/SETI@Home on SuSE 9.3: extremely slow

Questions and Answers : Unix/Linux : BOINC/SETI@Home on SuSE 9.3: extremely slow
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Profile Jean-Henry Berevoescu

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Message 149582 - Posted: 10 Aug 2005, 7:07:15 UTC

Hi,
I switcheed from Mandrake 10.1 to SuSE 9.3 and noticed that the same copy of BOINC (ver. 4.43) runs 4-5 times
slower on SuSE than it used to do on Mandrake 10.1 on the same machine. The CPU looks to be pretty exploited too. Any idea on why this happens?

Thanks,
Jean
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Message 149644 - Posted: 10 Aug 2005, 11:27:17 UTC

As i can see itfrom your stats your machine is a pentium M. My guess is that the kernel is throttleing you cpu (acpi enabled? modules loaded ?).

what´s the output of "cat /proc/cpuinfo" ?
it should show you the current speed you cpu runs on.

regards
Crunch3r



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Profile Jean-Henry Berevoescu

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Message 149648 - Posted: 10 Aug 2005, 11:35:26 UTC - in response to Message 149644.  

As i can see itfrom your stats your machine is a pentium M. My guess is that the kernel is throttleing you cpu (acpi enabled? modules loaded ?).

what´s the output of "cat /proc/cpuinfo" ?
it should show you the current speed you cpu runs on.

regards
Crunch3r



----------------------------------------------------------
cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 13
model name : Intel(R) Pentium(R) M processor 1.60GHz
stepping : 6
cpu MHz : 598.198
cache size : 2048 KB
fdiv_bug : no
hlt_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 mce cx8 sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss tm pbe est tm2
bogomips : 1185.79
----------------------------------------------------------
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Message 149662 - Posted: 10 Aug 2005, 11:58:16 UTC - in response to Message 149648.  


----------------------------------------------------------
model name : Intel(R) Pentium(R) M processor 1.60GHz
cpu MHz : 598.198
----------------------------------------------------------


Seems, the problem is solved ;-)
600 MHz aren't 1600... And because SuSE 9.3 is a resource hog, the approx 3 times slower CPU speed results in 4 times slower Seti.

If you want the CPU to go full speed at all times, you'll have to disable the "Throttle CPU" option in ACPI. I don't know how it's done in SuSE apart from disabling ACPI altogether in the kernel-boot-line "vmlinuz [...] acpi=off"

By the way, I would leave the settings like they are. By this the power consumption of your CPU should be very low, so (if its a notebook) the temperature of the system will stay so low, you'll be able to keep working with it on your knees.
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Message 149851 - Posted: 11 Aug 2005, 2:11:01 UTC - in response to Message 149662.  


----------------------------------------------------------
model name : Intel(R) Pentium(R) M processor 1.60GHz
cpu MHz : 598.198
----------------------------------------------------------


Seems, the problem is solved ;-)
600 MHz aren't 1600... And because SuSE 9.3 is a resource hog, the approx 3 times slower CPU speed results in 4 times slower Seti.

If you want the CPU to go full speed at all times, you'll have to disable the "Throttle CPU" option in ACPI. I don't know how it's done in SuSE apart from disabling ACPI altogether in the kernel-boot-line "vmlinuz [...] acpi=off"

By the way, I would leave the settings like they are. By this the power consumption of your CPU should be very low, so (if its a notebook) the temperature of the system will stay so low, you'll be able to keep working with it on your knees.


Not really. As I said, I was comparing the performance with the one I had with Mandrake 10.1 on the same machine - no changes whatsoever hardwarewise.
The statement about SuSE 9.3 as being a resource hog, I'm not sure I agree there - all the other applications I run behave at least at the same level as in the previous case (Mandrake 10.1), if not even sensibly better. Why would BOINC be different?
I will check the throttle setting - thanks for pointing that out that might be and explanation - but 4-5 times slowdown? Doesn't quite add up.
And no, I don't quite care about working with it on my lap - I never do that (I don't quite understand why the laptops are presented as a "lap" thing - I'd say one can hardly find a more uncomfortable position than that one. :-) :-) :-)

Jean

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Message 150914 - Posted: 13 Aug 2005, 10:35:05 UTC

Hi!
I'm also using SuSE 9.3 and it's also running awfully slow!Here are my CPU stats:
achilles:~ # cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Pentium(R) 4 CPU 3.20GHz
stepping : 1
cpu MHz : 3201.424
cache size : 1024 KB
physical id : 0
siblings : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pni monitor ds_cpl cid xtpr
bogomips : 6340.60

processor : 1
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Pentium(R) 4 CPU 3.20GHz
stepping : 1
cpu MHz : 3201.424
cache size : 1024 KB
physical id : 0
siblings : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pni monitor ds_cpl cid xtpr
bogomips : 6389.76

I'm using an IBM xSeries 206.
And that's what i get in boinc:
Measured floating point speed 675.43 million ops/sec
Measured integer speed 1274.61 million ops/sec
a little slow, ay?
when using MS Win XP Home on a machine with a AuthenticAMD
AMD Athlon(tm) 64 Processor 3200+ i get:
Measured floating point speed 2000 million ops/sec
Measured integer speed 3702.95 million ops/sec

what am i doing wrong???
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Questions and Answers : Unix/Linux : BOINC/SETI@Home on SuSE 9.3: extremely slow


 
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