[ale] Lost sar data?

[Raj Wurttemberg]

On my RHEL6 servers there is a cron job that calls sa and writes to the sar
log files (/var/log/sa) every ten minutes:

# run system activity accounting tool every 10 minutes  
*/10 * * * * root /usr/lib/sa/sa1 1 1  

# generate a daily summary of process accounting at 23:53  
53 23 * * * root /usr/lib/sa/sa2 -A

(This is the default as installed by the sysstat pacakage)

Kind regards,
/Raj


-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of Leam
Hall
Sent: Thursday, December 29, 2016 6:43 PM
To: Atlanta Linux Enthusiasts <ale at ale.org>
Subject: Re: [ale] Lost sar data?

Hmm...these were 6 and 8 hour losses, so probably not a disk sync issue.

On 12/29/16 15:19, Jim Kinney wrote:
> Yes and no. It's stored in memory until a process writes it to disk.
> Basic sar data is really just reading /proc for numbers. But that is 
> of course just in memory data. To store it requires a system process 
> that collects it. That usually runs in cron or as a daemon.
>
> On Thu, 2016-12-29 at 13:50 -0500, leam hall wrote:
>> On different VM hard resets, I've noticed that sar data is lost. On 
>> one reset, all data prior to the reset (0000-reset) was missing, on 
>> another all data after (crash-2350) was missing.
>>
>> Any ideas why? Is the data stored in memory?
>>
>> --
>> Mind on a Mission <http://leamhall.blogspot.com/> 
>> _______________________________________________
>> Ale mailing list
>> Ale at ale.org <mailto:Ale at ale.org>
>> http://mail.ale.org/mailman/listinfo/ale
>> See JOBS, ANNOUNCE and SCHOOLS lists at 
>> http://mail.ale.org/mailman/listinfo
>
> --
>
> James P. Kinney III
>
> Every time you stop a school, you will have to build a jail. What you 
> gain at one end you lose at the other. It's like feeding a dog on his 
> own tail. It won't fatten the dog.
> - Speech 11/23/1900 Mark Twain
>
> http://heretothereideas.blogspot.com/
>
>
>
> _______________________________________________
> Ale mailing list
> Ale at ale.org
> http://mail.ale.org/mailman/listinfo/ale
> See JOBS, ANNOUNCE and SCHOOLS lists at 
> http://mail.ale.org/mailman/listinfo
>

--
  Dec 2016
I am a professional writer. My writing pleases my Father, encourages others,
and pays the bills. I work on my craft, content, platform, and business. I
show up for work every day, meet my goals, and let my Father determine
success. I am a professional writer.
_______________________________________________
Ale mailing list
Ale at ale.org
http://mail.ale.org/mailman/listinfo/ale
See JOBS, ANNOUNCE and SCHOOLS lists at
http://mail.ale.org/mailman/listinfo