Yemi, 2.6 is your friend :-) If I read the source right, you find the following numbers in /proc/stat: user, nice, system, idle, iowait, irq, softirq
2.4 had only: user, nice, system, "all other jiffies not in a category" The numbers are of course per-cpu and not per-partition. Cheers Martin --- "Adesanya, Adeyemi" <[EMAIL PROTECTED]> wrote: > > Martin, > > I have been missing this kernel info too. I wrote some of my own > custom Ganglia disk IO metrics that are 'per-partition' just like > iostat. I get the data from /proc/partitions but so far I have been > unable to calculate > "%wait" for a partition (percentage of elapsed time wait queue was > not zero). I really want this on Linux so my stats are consistent > with Solaris. > > ---- > Yemi > > > > -----Original Message----- > > From: Martin Knoblauch [mailto:[EMAIL PROTECTED] > > Sent: Tuesday, May 25, 2004 1:30 PM > > To: ganglia-developers@lists.sourceforge.net > > Subject: [Ganglia-developers] RFC: IO-Wait CPU metrics for > > all platforms > > > > Hi, > > > > the 2.6.x Linux kernel exports statistics on the amount of > > time that the CPU is waiting for I/O operations. I think it > > would be useful to monitor this with gmond. In the minumum > > case we probably have to retrieve it and add it to the idle > numbers. > > > > From the other platforms only HP-UX and Solaris report the > > IO-wait cycles. Unfortunatelly under different names :-( > > > > My proposal would be to: > > > > - monitor IO-wait for "all" platforms. If the platforms don't > > have it, just report "0" > > - report it under the same name on all platforms > > > > My reason for the "all platform" metrics is to allow it into > > the webfrontend CPU report graph. We already do it for > > "nice", which is not exported by all platforms. > > > > I would volunteer to write the stub routines for all > > platforms and to modify the webfrontend. > > > > Comments? Am I out of my mind? The major drawback is that it > > adds some kind of incompatibility to pre-2.6 code. On the > > other hand 2.6 is the "right" place to do it. > > > > Cheers > > Martin > > > > ===== > > ------------------------------------------------------ > > Martin Knoblauch > > email: k n o b i AT knobisoft DOT de > > www: http://www.knobisoft.de > > > > > > ------------------------------------------------------- > > This SF.Net email is sponsored by: Oracle 10g Get certified > > on the hottest thing ever to hit the market... Oracle 10g. > > Take an Oracle 10g class now, and we'll give you the exam FREE. > > http://ads.osdn.com/?ad_id=3149&alloc_id=8166&op=click > > _______________________________________________ > > Ganglia-developers mailing list > > Ganglia-developers@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/ganglia-developers > > > > ===== ------------------------------------------------------ Martin Knoblauch email: k n o b i AT knobisoft DOT de www: http://www.knobisoft.de
