<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META NAME="Generator" CONTENT="MS Exchange Server version 6.5.7654.12"> <TITLE>Check Swap in/out rate instead of percentage free?</TITLE> </HEAD> <BODY>  Hi all, We want to know when one of our servers is swapping as a swapping server is a normally dead server :-) Currently we have the "normal" swap checks which generates a warning when more than 5% swap are used and a critical when more than 10% are used. This works ok until one time someone needs a little bit of swap. The swap gets used but never unused (as linux does not remove something as long it is not needed). So we get warnings and criticals while just some parts of swap are used but not "active" (in terms of it is actively read from). I think it would be more sufficient to not monitor how much swap is in use but to check if pages are read from swap in some period of time. Such as warning: if some pages were read out of swap critical: if in all of the last three measurement-periods pages were read I can acces the "absolute" swap out-page count by e.g. cat /proc/vmstat | grep pswpout | cut -d " " -f2 which gives me the number of pages swapped out since the last boot. So I would need to save this to some file and read it back. I searched for a plugin which already does this (or a similar) kind of check but I did not found anything. So now I am wondering: - did I just miss a plugin - do I think completely wrong and my opinion is bullshit? So the questions: - does this kind of check make sense? - is there any plugin which does this already? Regards Michael PS: We are using Nagios on SLES11 and RHEL6 ******************************************************************************* Diese eMail enthaelt vertrauliche und/oder rechtlich geschuetzte Informationen. Wenn Sie nicht der richtige Adressat sind oder diese eMail irrtuemlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese Mail. Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser Mail ist nicht gestattet. This email may contain confidential and/or privileged information. If you are not the intended recipient (or have received this email in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this email is strictly forbidden. *******************************************************************************</BODY> </HTML>