Re: [SLUG] assessing vps performance issues

2013-10-29 Thread lists
On Fri, October 25, 2013 1:36 pm, Michael Chesterton wrote:
 I know it's resolved, but look at the 6th column in the original post.
 90+% iowait, 90% of the time, the cpu is waiting for IO.

 now what you should do is run the same command when everything is working
 normally so you'll know what the output looks like. Then when you have
 another problem, you can compare with the normal output. --

the resolved problem keeps coming back,
under normal situation, I'm ruining load average of .2
then, for maybe 1 to 2 hours high iowait, load average peaks at 130+

aprt from sar and bonnie (haven't installed it yet, wasn't in my repo),
what other indicators can I use ?

I'm thinking of feeding it into cacti.

meanwhile, data centre response has been:

'we can ping it, there is nothing wrong' and 'reboot the server'


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Re: [SLUG] assessing vps performance issues

2013-10-29 Thread Michael Chesterton
show the support people your evidence of high IO wait.
if they can't fix it, change providers.

Also if they have a public forum, ask for help on their public forum
with the output showing high IO. If they're an au company, ask
for help on whirlpool in the appropriate forum, they probably watch
that for mentions of their name.




On Wed, Oct 30, 2013 at 12:17 PM, li...@sbt.net.au wrote:

 On Fri, October 25, 2013 1:36 pm, Michael Chesterton wrote:
  I know it's resolved, but look at the 6th column in the original post.
  90+% iowait, 90% of the time, the cpu is waiting for IO.

  now what you should do is run the same command when everything is working
  normally so you'll know what the output looks like. Then when you have
  another problem, you can compare with the normal output. --

 the resolved problem keeps coming back,
 under normal situation, I'm ruining load average of .2
 then, for maybe 1 to 2 hours high iowait, load average peaks at 130+

 aprt from sar and bonnie (haven't installed it yet, wasn't in my repo),
 what other indicators can I use ?

 I'm thinking of feeding it into cacti.

 meanwhile, data centre response has been:

 'we can ping it, there is nothing wrong' and 'reboot the server'


 --
 SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/
 Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html

-- 
SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/
Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html