Messages in this thread | | | Date | Thu, 31 Jul 2003 17:25:14 +0200 | From | Mathieu Malaterre <> | Subject | Re: Spinlock performance on Athlon MP (2.4) |
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Scott L. Burson wrote: > Hi, > > First, and probably the reason you haven't heard more complaints about the > problem, its severity is evidently dependent on the size of main memory. At > 512MB it doesn't seem to be much of a problem (right, Mathieu?).
Right. I have 1.5 GB and can reproduce the problem. And 'append mem=512M' in lilo made things works nicely too.
> At 2.5GB, > which is what I have, it can be quite serious. For instance, if I start two > `find' processes at the roots of different filesystems, the system can spend > (according to `top') 95% - 98% of its time in the kernel. It even gets > worse than that, but `top' stops updating -- in fact, the system can seem > completely frozen, but it does recover eventually. Stopping or killing one > of the `find' processes brings it back fairly quickly, though it can take a > while to accomplish that.
In fact, last week I had such bad warm reboots that I opened the box and all of a sudden everythings was working fine again.
So I would say I have a problem of low power supply or fan. And I think I have read some post about it in the past:
[System Starvation under heavy io load with HIGHMEM4G] http://www.ussg.iu.edu/hypermail/linux/kernel/0303.2/1435.html
[Tyan 2460/Dual Athlon MP hangs] http://www.ussg.iu.edu/hypermail/linux/kernel/0207.0/0040.html
Eventhought I have a Tyan S2460, I read that: [The Thunder K7 is an Extended ATX board, measuring 12 × 13 inches. It only supports Registered DDR PC1600/2100 memory, so your old DIMMs won't work. Your old power supply won't work either. The Thunder K7 needs an extra 8-pin power connector. It's not the same extra power connector that Intel Pentium 4 Xeon-based motherboards need either, so you must get a special power supply that currently only will work with this one board.] http://www.linuxjournal.com/bg/advice/ulb_02.php
What do you think of it ?
Here is my uptime:
$ uptime 5:15pm up 3 days, 3:18, 13 users, load average: 0.08, 0.25, 0.21 And I have been running rather heavy jobs ('make -j') with a lot of IO...
One final thing, I am pretty novice at those things, so please appologize if I said something completely dumb.
my 2 cents, mathieu
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