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Re: Performance Question [message #11000 is a reply to message #10968] Sun, 11 March 2007 12:42 Go to previous messageGo to previous message
dev is currently offline  dev
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Registered: September 2005
Location: Moscow
Senior Member
What was the test?

- what environment do you refer to when refering to native? host system? Which OS/kernel etc.?
- during the test you used most likely different directories for storing emails etc. The fact is that HDD speed varies very much for disk beginning and end.
So to make results comparable you should do the following:
a) create a separate partition of size which will be used totally up (plus some small reserve)
b) mount this partition to /var/spool when testing host environment and /vz/root/VEID/var/spool when testing VE.
This will guarantee that the same physical sectors of HDD will be used in both tests.
- set VE UBC setting to unlimited. This will prevent resource shortages during the test.

There can be other tunings done and checked for (e.g. mounting /vz with noatime), but w/o test case and test procedure it is hard to advise.

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