[Xymon] calculation of memory and swap

Betsy Schwartz betsy.schwartz at gmail.com
Fri Sep 20 03:20:04 CEST 2013


Upgrading to the 4.3.10 client fixed out oddball negative memory reports, which we had on servers with more than 128G RAM



On Sep 19, 2013, at 9:06 PM, Jeremy Laidman <jlaidman at rebel-it.com.au> wrote:

> On 19 September 2013 17:38, Rolf Schrittenlocher <schritte at ub.uni-frankfurt.de> wrote:
>> 
>> My idea is that values larger than 10 Gb are calculated the wrong way (because all zones using total memory less than 10 Gb are presented correctly). But I cannot find the place to fix this. Any ideas or hints?
> 
> Perhaps it's not a special case for >10G, but perhaps it's an overflow at 8G, so that anything larger than that goes negative.  I'm guessing 8G (rather than 10G) would be the threshold, as it's a power of two.  Are you able to reduce the zone's RAM allocation to a little greater, and then a little less than 8G to see if this is the case?  Or do you have examples of correctly displayed values greater than 8G and less that 10G?  By 8G, I mean exactly 2^33=8589934592 (or perhaps one less).
> 
> J
> 
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