Messages in this thread | | | Date | Tue, 11 May 1999 16:36:54 +0100 (GMT) | From | Riley Williams <> | Subject | Re: Linux can't stay up for more than an hour? |
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Hi Andrea.
>> I have seen a case of a system with 2xP2/400 CPU's and maxed out >> with RAM perform faster on a UP kernel than an SMP one, so such >> is possible
> Maybe you should run `make -j80 zlilo' instead of `make zlilo' > ;). Do you see my point? If you run only one task the > performances theorically should be the _same_.
Never having used zlilo, I wouldnae know, but the said system was distinctly faster under the UP kernel than the SMP one with the following command:
Q> make -j bzImage
Please advise how that compares with your sample?
> With the difference that in smp a kernel you have the spinlock > overhead, but in the up kernel all irqs are run over the current > task.
Meaning ???
Best wishes from Riley.
+----------------------------------------------------------------------+ | There is something frustrating about the quality and speed of Linux | | development, ie., the quality is too high and the speed is too high, | | in other words, I can implement this XXXX feature, but I bet someone | | else has already done so and is just about to release their patch. | +----------------------------------------------------------------------+ * ftp://ftp.MemAlpha.cx/pub/rhw/Linux * http://www.MemAlpha.cx/kernel.versions.html
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