Stuart Johnston said on Wed, Sep 24, 2003 at 09:54:43AM -0500: > Bob Proulx wrote: > >Stuart Johnston wrote: > > > >>I have a couple of systems I am trying to setup as production servers > >>using Debian stable. They have dual P3s and 2GB RAM. > > > > > >Should work very nicely. > > > > So far they seem a little slower than had I hoped (particularly the RAID > 5). But then they have been running at half capacity without the proper > kernel. Be aware that there are some _nasty_ bugs in the 2.4 kernel's with high IO load machines with more than 1GB of memory. I have 4 machines in production with 4GB RAM, dual CPU, and 320GB to 1.4TB RAIDs, and performance was _horrible_ (kswapd chewing up all CPU, IO taking forever). Apparently Linux can't do block IO from buffers above 1GB, but the VM subsystem doesn't know that, so isn't smart about freeing pages. Dropping the machines down to 1GB fixed the problem; they are now about as fast as we expected.
> Is there an easy way that I can find out which options a kernel-image > package has compiled? /boot/config-kernel-version Of course, you have to install the package first (or extract that file from the deb, but you can install a kernel package without enabling it for boot. M
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