Messages in this thread |  | | Date | Tue, 27 Apr 1999 23:03:00 -0400 | | From | Christian Robert <> | | Subject | problem in 2.2.* vs (working in 2.0.36) |
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hi,
I will make it short. I have a program in 2.0.36 who work all the time. My special config that I think is important is that in my rc.S I invoke "update -f 30" rather than the default (i think 5sec)
My program create 8 thousands directories and 8 thousands files in a few seconds, (may be 120).
On 2.0.36 kernel, he create about 1300, then he goes to sleep while the "/sbin/update" update the write-thru cache to disk, and then resume working as he supposed to do, and complete the job, a step at a time.
On 2.2.* (*=any), when he goes first to sleep (ps show STAT 'D'), update does the work, but after that, the cpu goes to 0% and my program never resume the work.
In that state (ps show STAT 'D') he cannot even be killed -TERM nor kill -9 Only reboot can get rid of that process.
I removed the "-f 30" on /sbin/update, and now the program work ok but obviously there may be a bug somewhere.
The important thing should be: When "update" is invoked by his own timeout, everything is fine. When "update" is invoked because of a starving of write cache process, he forgot to resume the process who where stopped by the starving and waiting on him.
Christian Robert, Polytechnique of Montreal.
[root@email:/usr/src/linux] # sh scripts/ver_linux -- Versions installed: (if some fields are empty or looks -- unusual then possibly you have very old versions) Linux email 2.2.6 #2 Tue Apr 27 22:02:55 EDT 1999 i686 unknown Kernel modules 2.1.121 Gnu C 2.8.1 Binutils 2.8.1.0.23 Linux C Library 5.4.46 Dynamic linker ldd: version 1.9.9 Linux C++ Library 2.8. Procps 1.2.7 Mount 2.7l Net-tools 1.50 Kbd 0.94 Sh-utils 1.16 Modules Loaded [root@email:/usr/src/linux] #
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