The "wa" means waiting on IO. Vacuum is a very IO intensive
process. You can use tools like vmstat and iostat to see how much
disk IO is occurring. Also, sar is very helpful for trending these
values over time.
-- Will Reese http://blog.rezra.com
On May 9, 2006, at 5:19 AM, [EMAIL PROTECTED] wrote:
Hi all !
I have got such problem.
Im running Postgresql 7.3.2 on Linux 2.6.13.
What is see when VACCUM is running and killing my CPU is:
Cpu(s): 3.2% us, 0.0% sy, 0.0% ni, 0.0% id, 96.8% wa, 0.0% hi,
0.0% si
what i am worry about is "96.8% wa" why is it like that?
what is the process waiting for ?
could somone explain me that please? :)
Best regards
david
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TIP 5: don't forget to increase your free space map settings
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
