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Operating Systems Linux Red Hat Freezing, Request Timeout - performance problem Post 302392313 by royalliege on Thursday 4th of February 2010 04:07:31 AM
Old 02-04-2010
Freezing, Request Timeout - performance problem

Hi,

The server is Redhat 5 32bit.

It is not easy to produce the problem so I will just write the experienced problems not how it is produced.

1) During login, it shows the last login time and then waits for 3-4 seconds to give shell prompt (considerable)
2) Sometimes the connection window freezes (console is also) not showing any characters pressed; after 4-5 seconds it shows all the characters written. (considerable)
3) Almost every half an hour, while pinging the server it shows Request Timeout then the NFS share drops. Smilie
4) CPU is seen as 99 %idle in sar output for the normal times. When the freeze happens the sar output shows 0 %idle, 70 %iowait and 30 %system.
Then the screen freeze and connection drops. Smilie

Any recommendation to check where the problem might be? Any ideas? Smilie
 

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CHSH(1)                                                            User Commands                                                           CHSH(1)

NAME
chsh - change login shell SYNOPSIS
chsh [options] [LOGIN] DESCRIPTION
The chsh command changes the user login shell. This determines the name of the user's initial login command. A normal user may only change the login shell for her own account; the superuser may change the login shell for any account. OPTIONS
The options which apply to the chsh command are: -h, --help Display help message and exit. -R, --root CHROOT_DIR Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory. -s, --shell SHELL The name of the user's new login shell. Setting this field to blank causes the system to select the default login shell. If the -s option is not selected, chsh operates in an interactive fashion, prompting the user with the current login shell. Enter the new value to change the shell, or leave the line blank to use the current one. The current shell is displayed between a pair of [ ] marks. NOTE
The only restriction placed on the login shell is that the command name must be listed in /etc/shells, unless the invoker is the superuser, and then any value may be added. An account with a restricted login shell may not change her login shell. For this reason, placing /bin/rsh in /etc/shells is discouraged since accidentally changing to a restricted shell would prevent the user from ever changing her login shell back to its original value. FILES
/etc/passwd User account information. /etc/shells List of valid login shells. /etc/login.defs Shadow password suite configuration. SEE ALSO
chfn(1), login.defs(5), passwd(5). shadow-utils 4.5 01/25/2018 CHSH(1)
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