topic Re: Apache "[error] (233)No buffer space available: accept: (client socket) in Operating System - HP-UX

Apache "[error] (233)No buffer space available: accept: (client socket)

Sammy_2 — Mon, 02 Aug 2004 15:26:00 GMT

Getting this error in apache log
on hpu-ux 11 (apache version Server version: Apache/1.3.14 (Unix))

What buffer space does it mean ? how to check buffer space and finally How to fix it ?
A CA helpdesk application using apache is having problems to the point no users can't access the web client. So app. admin have to recycle the app.and then all is fine ? Trying to rule out this "No buffer space " option. Also, see the message even when app is up and is working fine.

Re: Apache "[error] (233)No buffer space available: accept: (client socket)

Steven E. Protter — Mon, 02 Aug 2004 15:45:57 GMT

It would appear you are running out of resources. I would monitor performance with glance or a set of data collection scripts. I'm attaching the ones I do. Look for issues in the data corresponding to the log entries in the apache log.

SEP

Re: Apache "[error] (233)No buffer space available: accept: (client socket)

Shine_5 — Mon, 02 Aug 2004 17:02:58 GMT

Hello,

Here's an explanation of the problem :
Â· Client initiates a connection to the server
Â· Server is busy and so, the connect request goes to the accept queue
Â· Client times out at around the same time that the Server starts to
Â· respond to the request
Â· Server tries to accept the connection, but then the client has already
Â· sent a CONNRESET signal, the connection buffers (on the server) are
Â· freed.
Â· Server sees that there's no connection buffer, it gets back ENOBUFS from
Â· the TCP stack, and hence complains..
This is a problem in the handling of the ENOBUFS in Apache. The problem
can be mitigated by raising the value of:
tcp_conn_request_max
But the real solution is to use Apache 2.0. This issue has been resolved (the
fix is to treat ENOBUFS the same as ECONNRESE

Re: Apache "[error] (233)No buffer space available: accept: (client socket)

Steve Steel — Tue, 03 Aug 2004 01:44:17 GMT

Hi

Use the itrc to search the knowledge database for document

KBRC00009318
Apache 1.3 Web Server Performance Tuning on HP-UX 11.x

This should enable you to solve your problems

Steve Steel