[ale] why would it take longer to delete a file thanto createit?

[John G. Heim]

I guess its about time I learned to use sar. I tried once before but found 
the output too confusing. I am blind and I use a screen reader. Mostly 
things work pretty well at the command line. But I couldn't understand the 
output from sar. If I have to, I'll write a linearization script.

----- Original Message ----- 
From: "Brian Pitts" <brian at polibyte.com>
To: "Atlanta Linux Enthusiasts - Yes! We run Linux!" <ale at ale.org>
Sent: Thursday, May 06, 2010 12:40 PM
Subject: Re: [ale] why would it take longer to delete a file thanto 
createit?


> On 05/06/2010 11:39 AM, Greg Freemyer wrote:
>> John,
>>
>> As a general statement, taking 3 minutes to create a 1GB file on an
>> active db server is not that slow.
>>
>> I would not at all assume something is wrong based on that one test.
>>
>> How many i/o's per second are you seeing with just db activity?
>>
>> (iostat -d 1      is how I check that).
>>
>
> Seconding the use of sysstat. Look at 'sar -b' and 'sar -d'.
>
> You may have to edit the systat cronjob to get it to record statistics
> necessary to use -d with sar.
>
> http://pagesperso-orange.fr/sebastien.godard/man_sar.html
>
> -- 
> All the best,
> Brian Pitts
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