Re: Need to enable caches in SMP ? (was Kernel 2.6 SMP very slow with ServerWorks LE Chipset)

2006-12-15 Thread Bob
Jeff V. Merkey wrote: Alan wrote: As per Alan's suggestion I decompressed the kernel source tree with the processes pegged to one CPU then the other, and as he predicted it took vastly longer on one CPU than the other, but I don't know what that implies, or how to fix it. From the timing it

Re: Need to enable caches in SMP ? (was Kernel 2.6 SMP very slow with ServerWorks LE Chipset)

2006-12-14 Thread Jeff V. Merkey
Alan wrote: As per Alan's suggestion I decompressed the kernel source tree with the processes pegged to one CPU then the other, and as he predicted it took vastly longer on one CPU than the other, but I don't know what that implies, or how to fix it. From the timing it sounds like one

Need to enable caches in SMP ? (was Kernel 2.6 SMP very slow with ServerWorks LE Chipset)

2006-12-14 Thread Alan
> As per Alan's suggestion I decompressed the kernel source tree with the > processes pegged to one CPU then the other, and as he predicted it took > vastly longer on one CPU than the other, but I don't know what that > implies, or how to fix it. >From the timing it sounds like one processor ca

Re: Kernel 2.6 SMP very slow with ServerWorks LE Chipset

2006-12-13 Thread Bob
Bob wrote: Hi I have a dual PIII Motherboard based on a ServerWorks LE chipset, the motherboard is from an HP Netserver E 800 which is a customised ASUS CUR-DLS. in UP config everything is OK in SMP the system slows right down, I've been searching and recompiling my kernel for days looking fo

Re: Kernel 2.6 SMP very slow with ServerWorks LE Chipset

2006-12-07 Thread Bob
Arjan van de Ven wrote: in UP config everything is OK in SMP the system slows right down, I've been searching and recompiling my kernel for days looking for the problem option without success, please help. does the linux-ready firmware kit work on this machine? (see url in sig), it might be so

Re: Kernel 2.6 SMP very slow with ServerWorks LE Chipset

2006-12-07 Thread Bob
Alan wrote: As a test of raw CPU power I've been decompressing the kernel tree, with a UP 2.6 kernel this takes about 1m 15s, I don't know if bz2 is multithreaded but even if it's not I would expect a slight speed increase but in fact with a SMP 2.6 kernel it take 13 ~ 26m, with a SMP 2.4 kern

Re: Kernel 2.6 SMP very slow with ServerWorks LE Chipset

2006-12-07 Thread Arjan van de Ven
> in UP config everything is OK in SMP the system slows right down, > I've been searching and recompiling my kernel for days looking for > the problem option without success, please help. does the linux-ready firmware kit work on this machine? (see url in sig), it might be something with the m

Re: Kernel 2.6 SMP very slow with ServerWorks LE Chipset

2006-12-07 Thread Alan
> As a test of raw CPU power I've been decompressing the kernel tree, with > a UP 2.6 kernel this takes about 1m 15s, I don't know if bz2 is > multithreaded but even if it's not I would expect a slight speed increase > but in fact with a SMP 2.6 kernel it take 13 ~ 26m, with a SMP 2.4 > kernel

Kernel 2.6 SMP very slow with ServerWorks LE Chipset

2006-12-06 Thread Bob
Hi I have a dual PIII Motherboard based on a ServerWorks LE chipset, the motherboard is from an HP Netserver E 800 which is a customised ASUS CUR-DLS. in UP config everything is OK in SMP the system slows right down, I've been searching and recompiling my kernel for days looking for the probl