Date: Sun, 11 Oct 2009 20:51:48 -0500 From: "Larry Rosenman" <ler@lerctr.org> To: "Steve Kargl" <sgk@troutmask.apl.washington.edu> Cc: freebsd-current@freebsd.org Subject: Re: Scheduler weirdness Message-ID: <fe073255a48a675c0a8ab5bb8c105e61.squirrel@webmail.lerctr.org> In-Reply-To: <20091012014846.GB38325@troutmask.apl.washington.edu> References: <6729ad0409e449f8dbda69ecd8feb618.squirrel@webmail.lerctr.org> <20091012014846.GB38325@troutmask.apl.washington.edu>
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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@lerctr.org US Mail: 430 Valona Loop, Round Rock, TX 78681-3893
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