Sponsored Content
Full Discussion: performance problem
Top Forums UNIX for Advanced & Expert Users performance problem Post 16625 by thehoghunter on Tuesday 5th of March 2002 12:27:22 PM
Old 03-05-2002
Is this server only running Sendmail? If so, then check to see if you have an increased volume of email that it is handling.

If you save the messages files or have stats on how much mail it handles, please check to see how many messages per week. If spammers have started hitting your system, this could be the only problem you are having.

You can check that you are not an open relay for spammers to use (www.abuse.net)

Next, do you have sar or any monitoring running? What is the version of Sendmail? Is it set up to use DNS? Has DNS recently changed (if sendmail is waiting on DNS, it can slow down your system as messages are not flowing as quickly waiting on timeouts from a DNS request).

Post output from % /usr/lib/sendmail -d0.1 -bt < /dev/null
(change company info as appropriate).
thehoghunter
 

9 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

AIX server performance problem!

Hello, I have a performance problem on an AIX box. I'm not sure what is causing this and hoping someone may have suggestions. Currently I'm noticing that cpu's are waiting while the box is in a idle state. I checked the disks and none of them are at 100%. If they were then I would understand... (3 Replies)
Discussion started by: ctcuser
3 Replies

2. Solaris

Performance problem

Hi All, There is a virtual user "ecoouk" which logs on to the server and runs some scripts. I want to know how much server performance can I gain if I put off all the scripts run by this user. Please tell me how to analyse how much resources a specific user is using. Regards, Abhishek (3 Replies)
Discussion started by: max29583
3 Replies

3. UNIX for Dummies Questions & Answers

Network performance problem

I have a Teradata Machine, using MP-RAS Unix, with a 1000 Intel Ethernet card and a Cisco switch. If I configure the ethernet card and the switch to auto, so they negotiate to 1000, or configure the ethernet card and switch manually to 1000Full or 100Full, the velocity is very very low. Only... (2 Replies)
Discussion started by: cuatrodos
2 Replies

4. Emergency UNIX and Linux Support

VPN performance problem

This is a weird problem I've been butting my head against for days now... I have two OpenVPN servers set up with identical configurations except for the keys. One of them is hosted in a datacenter with a large backbone, the other is hosted on my home server's limited residential internet. One... (9 Replies)
Discussion started by: Corona688
9 Replies

5. Linux

Help in monitoring performance problem in Linux

hello, i'm having some performance problem on one of my linux machines and i hope someone will be able to help me analyzing the problem. machine info: Linux fedora, cpu x 4 cores of 1.6Ghz, 8G memory, 8G swap. i've enabled sar on my machine and created a graph using ksar utility for... (15 Replies)
Discussion started by: levic
15 Replies

6. Red Hat

Disk performance problem on login

Running CentOS 5.5: I've come across a relatively recent problem, where in the last 2 months or so, the root disk goes to 99% utilization for about 20 seconds when a user logs in. This occurs whether a user logs in locally or via ssh. I have tried using lsof to track down the process that is... (5 Replies)
Discussion started by: dangral
5 Replies

7. HP-UX

Performance problem - waiting on cache

My server is running HP-UX 11.23 and one Oracle database. The server has 8 CPUs and is mostly idle all the time. Buffer cache is set to 10%min/max with 5GB memory on the server. I have a user complaining that a batch process is all of a sudden taking a long time to finish. The DBA gave me the... (13 Replies)
Discussion started by: keelba
13 Replies

8. UNIX for Advanced & Expert Users

Performance problem with bidirectional nc

Working on a simple, half duplex network diagnostic that will run anywhere using nc and dd. Performance is symmetrical with sink and source nc processes open as a server: nc -vkl 5000 > /dev/null & cat /dev/zero | nc -vkl 5001 & With this on the client: nc host0 5001 | dd of=/dev/null... (0 Replies)
Discussion started by: netdrx
0 Replies

9. Shell Programming and Scripting

Performance problem in Shell Script

Hi, I am Shell script beginner. I wrote a shell programming that will take each line of a file1 and search for it in another file2 and give me the output of the lines that do not exist in the file2. I wrote it using do while nested loop but the problem here is its running for ever . Is there... (12 Replies)
Discussion started by: sakthisivi
12 Replies
avahi-dnsconfd(8)					      System Manager's Manual						 avahi-dnsconfd(8)

NAME
avahi-dnsconfd - Unicast DNS server from mDNS/DNS-SD configuration daemon SYNOPSIS
avahi-dnsconfd [options] avahi-dnsconfd --kill avahi-dnsconfd --refresh avahi-dnsconfd --check DESCRIPTION
avahi-dnsconfd connects to a running avahi-daemon and runs the script /etc/avahi/dnsconfd.action for each unicast DNS server that is announced on the local LAN. This is useful for configuring unicast DNS servers in a DHCP-like fashion with mDNS. OPTIONS
-D | --daemonize Daemonize after startup and redirect log messages to syslog. -s | --syslog Log to syslog instead of STDERR. Implied by --daemonize. -k | --kill Kill an already running avahi-dnsconfd. (equivalent to sending a SIGTERM) -r | --refresh Tell an already running avahi-dnsconfd to refresh the DNS server data. (equivalent to sending a SIGHUP) -c | --check Return 0 as return code when avahi-dnsconfd is already running. -h | --help Show help -v | --version Show version information FILES
/etc/avahi/avahi-dnsconfd.action: the script to run when a DNS server is found or removed. SIGNALS
SIGINT, SIGTERM: avahi-dnsconfd will shutdown. This is issued by passing --kill to avahi-daemon. SIGHUP: avahi-dnsconfd will refresh the DNS server data. AUTHORS
The Avahi Developers <avahi (at) lists (dot) freedesktop (dot) org>; Avahi is available from http://avahi.org/ SEE ALSO
avahi-daemon(8), avahi-dnsconfd.action(8) COMMENTS
This man page was written using xml2man(1) by Oliver Kurth. Manuals User avahi-dnsconfd(8)
All times are GMT -4. The time now is 08:31 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy