On 10/04/2013 12:05 PM, Joe Doss wrote:
On 10/03/2013 09:21 PM, Kir Kolyshkin wrote:
I went ahead and mocked up something. Please run the attached script on
your node
and share your results.
Great script Kir. I gave it a try and I don't think it is calculating
VSwap correctly:
Swap available: 12G allocated: 32Z oversell: 293109830457468%
At least not on PVC 4.7 node. I for sure do not have 32Z of VSwap set on
my contaners. Maybe that is due to running it on a PVC hardware node vs
an OpenVZ hardware node? That seems to be the case.
This is probably because some containers have unlimited (or
near-unlimited) swappages configured, or maybe they are not
VSwap-enabled at all. (I can't figure it out without seeing your
/proc/bc/resources, feel free to email it to me privately so
I can take a look).
When I ran it on my
testing OpenVZ hardware node it works fine. One thing I did notice is
one CT shows the used and peak vswap greater than the limit. Why would
that be the case? This is on 2.6.32-042stab078.28
103 1.75G 2G 2G - 142M 142M 128M -
This is completely normal -- as http://openvz.org/VSwap tells,
"swap used by a container can exceed swappages.limit, but
is always within sum of physpages.limit and swappages.limit".
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