os-linux/745: Sometimes the httpd stops repsonding (process httpd floods the cpu)

[Rania Fakhoury <ra...@cyberia.net.lb>]

>Number:         745
>Category:       os-linux
>Synopsis:       Sometimes the httpd stops repsonding (process httpd floods the cpu)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    apache (Apache HTTP Project)
>State:          open
>Class:          support
>Submitter-Id:   apache
>Arrival-Date:   Tue Jun 17 05:20:01 1997
>Originator:     raniaf@cyberia.net.lb
>Organization:
apache
>Release:        1.1
>Environment:
Linux moon 2.0.30  with 256 MBRAM
Compiler cc
>Description:
Sometimes the httpd stops repsonding (process httpd floods the cpu)

Error in :

[Tue Jun 17 20:13:12 1997] - socket error: accept failed
[Tue Jun 17 20:15:06 1997] accept: Connection reset by peer
[Tue Jun 17 20:15:06 1997] - socket error: accept failed
[Tue Jun 17 20:15:06 1997] accept: Connection reset by peer
[Tue Jun 17 20:15:06 1997] - socket error: accept failed
[Tue Jun 17 20:15:06 1997] accept: Connection reset by peer
[Tue Jun 17 20:15:06 1997] - socket error: accept failed
bind: Address already in use
bind: Address already in use
bind: Address already in use

>How-To-Repeat:
We have a server heavy used by apache and squid . I overload the server.
>Fix:
I saw that the pb is the listen queue in Linux and that we must undefined FCNTL_SERiALIZED_ACCEPT or increase the NR_OPEN and NR_FILE but I have already 3000 for NR_OPEN and 1024 for NR_FILE.

Some said that we must compile with USE_FCNTL_SERiALIZED_ACCEPT

In fact, I am not sure about this solution.
>Audit-Trail:
>Unformatted: