real memory status
list Kris Springer
Thank you.
Kris Springer
list Jason Brockdorf
Here's an answer I found googling... https://unix.stackexchange.com/questions/147006/real-vs-actual-memory-in-xymon-hobbit From how I understand it, your system memory will be used by services/apps/etc and that usage is referred to as "actual". The remainder of the memory that's not in use for those purposes will be put to use by the kernel as buffers/cache. Basically in Linux (unless you need to tune this for some specific reason) you really don't need to as worried about "real" memory usage, and the fact that it uses that leftover memory to speed up the system is actually a good thing. As far as xymon works, you should be concerned with the "actual" usage (but not *completely* disregard real usage). I found a really good article one time that explains it. I'll try to find it and send in reply if I can.
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From: Xymon [mailto:xymon-bounces at xymon.com] On Behalf Of Kris Springer
Sent: Friday, March 16, 2018 12:18 PM
To: xymon at xymon.com
Subject: [Xymon] real memory status
What is the 'Real/Physical' memory status? It always shows above 95% even though my system memory hovers around 30%. I've read that it's based on the results of the 'free' command, but when I manually run that command I only get 'Actual' and 'Swap' values. This 'Real' status doesn't seam 'real' at all. I'm routinely forced to manually ignore that specific value's tolerances via the 'analysis.cfg' file, but that seems counter productive if the 'Real' status actually means something important. Can anyone advise?
Thank you.
Kris Springer
list Jason Brockdorf
Found it: https://www.linuxatemyram.com/ -----Original Message----- From: Xymon [mailto:xymon-bounces at xymon.com] On Behalf Of Jason Brockdorf via Xymon Sent: Friday, March 16, 2018 12:51 PM To: 'Kris Springer' <user-c2caa0a7a8d5@xymon.invalid>; xymon at xymon.com Subject: Re: [Xymon] real memory status
list Galen Johnson
We did some digging on Linux memory management recently and came to the conclusion that it's just one big Ponzi Scheme. =G= On Fri, Mar 16, 2018 at 1:51 PM, Jason Brockdorf via Xymon <xymon at xymon.com> wrote:
---------- Forwarded message ---------- From: Jason Brockdorf <user-fa0be9c5d46d@xymon.invalid> To: "'Kris Springer'" <user-c2caa0a7a8d5@xymon.invalid>, <xymon at xymon.com> Cc: Bcc: Date: Fri, 16 Mar 2018 12:51:10 -0500
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Subject: RE: [Xymon] real memory status
Here's an answer I found googling...
https://unix.stackexchange.com/questions/147006/real-vs- actual-memory-in-xymon-hobbit
▸
From how I understand it, your system memory will be used by
services/apps/etc and that usage is referred to as "actual". The remainder
of the memory that's not in use for those purposes will be put to use by
the kernel as buffers/cache. Basically in Linux (unless you need to tune
this for some specific reason) you really don't need to as worried about
"real" memory usage, and the fact that it uses that leftover memory to
speed up the system is actually a good thing. As far as xymon works, you
should be concerned with the "actual" usage (but not *completely* disregard
real usage).
I found a really good article one time that explains it. I'll try to find
it and send in reply if I can.
*From:* Xymon [mailto:xymon-bounces at xymon.com] *On Behalf Of *Kris
Springer
*Sent:* Friday, March 16, 2018 12:18 PM
*To:* xymon at xymon.com
*Subject:* [Xymon] real memory status
What is the 'Real/Physical' memory status? It always shows above 95% even
though my system memory hovers around 30%. I've read that it's based on
the results of the 'free' command, but when I manually run that command I
only get 'Actual' and 'Swap' values. This 'Real' status doesn't seam
'real' at all. I'm routinely forced to manually ignore that specific
value's tolerances via the 'analysis.cfg' file, but that seems counter
productive if the 'Real' status actually means something important. Can
anyone advise?
Thank you.
Kris Springer
list Kris Springer
Thank you.
Kris Springer
▸
Here's an answer I found googling...
https://unix.stackexchange.com/questions/147006/real-vs-actual-memory-in-xymon-hobbit
From how I understand it, your system memory will be used by services/apps/etc and that usage is referred to as "actual". The remainder of the memory that's not in use for those purposes will be put to use by the kernel as buffers/cache. Basically in Linux (unless you need to tune this for some specific reason) you really don't need to as worried about "real" memory usage, and the fact that it uses that leftover memory to speed up the system is actually a good thing. As far as xymon works, you should be concerned with the "actual" usage (but not *completely* disregard real usage).
I found a really good article one time that explains it. I'll try to find it and send in reply if I can.
From: Xymon [mailto:xymon-bounces@xymon.com] On Behalf Of Kris Springer
Sent: Friday, March 16, 2018 12:18 PM
To: xymon@xymon.com
Subject: [Xymon] real memory status
What is the 'Real/Physical' memory status? It always shows above 95% even though my system memory hovers around 30%. I've read that it's based on the results of the 'free' command, but when I manually run that command I only get 'Actual' and 'Swap' values. This 'Real' status doesn't seam 'real' at all. I'm routinely forced to manually ignore that specific value's tolerances via the 'analysis.cfg' file, but that seems counter productive if the 'Real' status actually means something important. Can anyone advise?
Thank you.
Kris Springer