Re: Scheduler weirdness

On Sun, October 11, 2009 8:48 pm, Steve Kargl wrote:
> On Sun, Oct 11, 2009 at 05:59:52PM -0500, Larry Rosenman wrote:
>>
>> Ok, running RELENG_8 from Friday (10/9/2009).
>>
>> If I have 4 Folding-at-home processes running (they nice themselves) the
>> system is slow as a dog.
>>
>> If I stop them, it's speedy.
>>
>> This is running SCHED_ULE
>>
>> is this expected?
>>
>> What can I do to help?
>>
>
> How many cpus are available on your system?  If you're in an
> over-commit situation with numerical intensive applications,
> you may find 4BSD to be a better option.
4 cpu's.

$ sysctl dev.cpu
dev.cpu.0.%desc: ACPI CPU
dev.cpu.0.%driver: cpu
dev.cpu.0.%location: handle=\_PR_.CPU0
dev.cpu.0.%pnpinfo: _HID=none _UID=0
dev.cpu.0.%parent: acpi0
dev.cpu.0.temperature: 50.0C
dev.cpu.0.freq: 1867
dev.cpu.0.freq_levels: 1867/35000 1633/30625 1400/26250 1166/21875
933/17500 700/13125 466/8750 233/4375
dev.cpu.0.cx_supported: C1/1
dev.cpu.0.cx_lowest: C1
dev.cpu.0.cx_usage: 100.00% last 500us
dev.cpu.1.%desc: ACPI CPU
dev.cpu.1.%driver: cpu
dev.cpu.1.%location: handle=\_PR_.CPU1
dev.cpu.1.%pnpinfo: _HID=none _UID=0
dev.cpu.1.%parent: acpi0
dev.cpu.1.temperature: 53.0C
dev.cpu.1.cx_supported: C1/1
dev.cpu.1.cx_lowest: C1
dev.cpu.1.cx_usage: 100.00% last 500us
dev.cpu.2.%desc: ACPI CPU
dev.cpu.2.%driver: cpu
dev.cpu.2.%location: handle=\_PR_.CPU2
dev.cpu.2.%pnpinfo: _HID=none _UID=0
dev.cpu.2.%parent: acpi0
dev.cpu.2.temperature: 54.0C
dev.cpu.2.cx_supported: C1/1
dev.cpu.2.cx_lowest: C1
dev.cpu.2.cx_usage: 100.00% last 500us
dev.cpu.3.%desc: ACPI CPU
dev.cpu.3.%driver: cpu
dev.cpu.3.%location: handle=\_PR_.CPU3
dev.cpu.3.%pnpinfo: _HID=none _UID=0
dev.cpu.3.%parent: acpi0
dev.cpu.3.temperature: 55.0C
dev.cpu.3.cx_supported: C1/1
dev.cpu.3.cx_lowest: C1
dev.cpu.3.cx_usage: 100.00% last 500us
$

>
> --
> Steve
>


-- 
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 512-248-2683                 E-Mail: ler_at_lerctr.org
US Mail: 430 Valona Loop, Round Rock, TX 78681-3893