#13 shell pipes hang!
Hello,
using 2.4.22-openmosix3 I frequently observe indefinitly
long hanging processes with a simple shell command like:
cat long_text_file | wc -l
on the other hand
wc -l long_text_file or
wc -l < long_text_file
report rapidly the answer (12041604 lines)
I compiled the latest fileutils and coreutils to make sure
and the same problem happens.
The 2.4.22 kernel without the openmosix patch
works fine with the same commands.
I had noticed that some "tar -cf - . | tar -xf -"
copies also hanged.
I wonder if the "pipe" is modified by the 2.4.22-
openmosix3 patch.
I used the following kernel options:
#
# openMosix
#
CONFIG_MOSIX=y
# CONFIG_MOSIX_TOPOLOGY is not set
CONFIG_MOSIX_SECUREPORTS=y
CONFIG_MOSIX_DISCLOSURE=3
CONFIG_MOSIX_FS=y
CONFIG_MOSIX_DFSA=y
CONFIG_MOSIX_PIPE_EXCEPTIONS=y
CONFIG_MOSIX_NO_OOM=y
CONFIG_MOSIX_LOADLIMIT=y
Any help would be appreciated.
------------------
Hogues Herve
Biotechnology Research Institute
E-mail: Herve.Hogues@BRI.NRC.CA
Logged In: YES
user_id=1019645
If I remember it right, I first stumbled across this problem
under 2.4.22-openmosix-2. Upgrading to 2.4.22-openmosix-3
didn't solve it. The problem occurs with a very low
frequency, and I have no way of reproducing it. Under 2.4.22
I did experience a fifo-related kernel oops (previously
reported).