> /proc/cpuinfo exists on both RHEL5 and SLES10 machines I have at > hand. Does it exist on your machine? If you run "cat /proc/cpuinfo > > /tmp/t; ls -l /tmp/t" what size do you see? What kind of machine are > you running on (number of CPUs, etc)? /proc/cpuinfo exists on every linux kernel I have seen in a long time, it should be present in all current distros.
The size is 24790 bytes for a 32 core machine. The issue also appears on the 16 core machine. However, I think this message first turned up when we got the 4-core CPUs. So it might be related to the file size (before both machines were 8 core total). Look at the strace dump I sent in my first mail. It shows the system calls leading up to the error message. It sucessfully opens the file, allocates a 4kb thread-private memory block, and begins a read-loop on the file descriptor with a 10k buffer (stack I guess). The kernel returns only 5 stanzas worth of file content, probably because it's own buffer is page-sized. Interestingly, the second time round the buffer size announced to read is decremented by 4k instead of just 3870. After the buffer is (apparently) full, a last read is issued with only 1k. The 4k allocated before are freed and the error message is written to the log. I can attach a debugger, but I'm lacking .../src/server/auth/utauthd/GroupManager.c to find out more. ltrace seems not to work with java, which is when I quit debugging and instead wrote a mail here. :) The machines are running Ubuntu Hardy i386 with a 2.6.23.11 amd64 kernel. Budget considerations forced us to use the Tyan 8 way box instead of the much nicer x4600 -- although considering our hardware troubles it might well have been worth it I won't put users on the second machine for a couple of days, anyway, so if you have any more tests that might help pinpointing the problem, tell me. Elmar Elmar
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