ISSUE: very slow (factor 100) 4-way 16GByte server, with 2.4.2

Robert Suetterlin (sutter@robert2.mpe-garching.mpg.de)
Tue, 27 Mar 2001 13:27:24 +0200


Hello,

ISSUE: very slow (factor 100) 4-way 16GByte server, with 2.4.2
DESCR: we have a Maxdata 4-way Xeon, with 16GByte RAM. If we compile a kernel (2.4.0 or 2.4.2 up to ac25) that uses all 16 GByte RAM the machine gets very slow. For example network Bandwidth of 100MBit Ethernet is about 1-50kByte/sec. Access to harddrives seems to be equally slow.
I really do not know where to start looking, but I know that lots of people seem to be using n-way Xeon with 16+GByte RAM without severe performance problem.
KEYWORDS: kernel, slow, maxdata, 16GB
KERNEL: 2.4.0 and 2.4.2 (upto ac25)

If more information --- like /proc/cpuinfo or uname -a or versions of installed software ... --- is needed to analyse the problem, please tell me, I will gladly send it.

Sincerely,

Robert S.
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