| Re: Bug (?): vzcfgvalidate not working [message #37293 is a reply to message #37290] |
Tue, 01 September 2009 10:35  |
divB
Messages: 79
Registered: April 2009
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Member |
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And it's me again.
Yes, I think setting all the UBC values on ones own is too complex except for fine tuning/special purposes.
I found a manual for Virtuozzo called "Virtuozzo Management of System Resources". This original manual from SW states:
| Quote: | The best and easiest way to configure resource management parameters for a new Virtual Environment is to produce the configuration at once, using commands operating with the configuration as a whole, rather than to set the parameters individually
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The manual described to:
- Split the hardware resources with vzsplit
- Validate the config with vzcfgvalidate
- If there are more and less powerful VEs on a single node, use vzcfgscale to scale up or down the configs
- Apply them using vzctl --applyconfig
- Check usage with vzcalc on per-machine basis and vzmemcheck for the system as a whole
That sounds nicer to me. Unfortunately vzcfgscale is not included in OpenVZ. However, I used the following way to partitionate my resources:
- I have 1 GB of RAM and 4 GB of swap and have 8 VEs
- I use vzsplit -s "2 GB" -n 8 -f hn-by-10 to produce a config for 8 VEs. This way I have 2 GB of swap in spare.
- Validate with vzcfgvalidate. No errors/warnings found
- Apply to my VEs with vzctl --applyconfig
Now this is my memory map:
# vzmemcheck -v
Output values in %
veid LowMem LowMem RAM MemSwap MemSwap Alloc Alloc Alloc
util commit util util commit util commit limit
400 1.73 13.12 11.84 2.69 8.45 7.62 8.45 15.83
302 0.64 13.12 6.45 1.54 8.45 2.59 8.45 15.83
301 1.18 13.12 7.64 2.50 8.45 2.71 8.45 15.83
300 0.28 13.12 0.40 0.10 8.45 0.56 8.45 15.83
202 0.32 13.12 0.47 0.13 8.45 0.29 8.45 15.83
201 0.93 13.12 1.30 0.32 8.45 8.32 8.45 15.83
200 1.99 13.12 8.58 1.95 8.45 7.41 8.45 15.83
-------------------------------------------------------------------------
Summary: 7.06 91.87 36.69 9.23 59.14 29.49 59.14 110.83
So I guess I have much resources for spare in case I want to scale up one of the VEs. I this case I would try to manually scale down the less power-VEs and scale up the powerful ones using the forumula in http://wiki.openvz.org/Intermediate_UBC_configurations.
I think this is the way to go rather than setting all the parameters on ones own.
What is your opinion?
divB
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