[RAS] further nebka questions

[Christian Zimmermann]

On Wed, 30 Jan 2008, Ivan Kurmanov wrote:

> speaking of du -cs ...: of course, it traverses the filesystem -- that's 
> heavy. We tried to use it to analyze where the diskspace was going.
>
> They shouldn't have cause the system fault by itself, but who knows? may be 
> it have consumed all the memory while going through the filesystem.  (But why 
> would it result in ext3 errors -- i can't imagine.)

It may be a problem when other things are running at the same time. I 
notice that several of the daily tasks take a long time to run at full (or 
more than full) load. If they start overlapping, this can become a serious 
issue. Therefore, I modified crontab for the aras account like I do it for 
IDEAS: have it call one daily script that does each task in succession. I 
find the previous organization where each task is called separately at 
different, set times very dangerous.

I am not putting the 'du' instructions back online. However, I think we 
can put the service back online, it has been off too long now, and we want 
to make sure it works live before the usual beginning-of-the-month load. 
So, Kit, work your DNS magic!

>
> -ivan
>
>
> On 30 Jan 2008, at 17:24, Christian Zimmermann wrote:
>
>> in the root crontab, about the follozing entries (currently commented out
>> by me):
>> 
>> #CZ30 0 * * *  /root/check.tables
>> #CZ22 23 * * * du -cs /* > du_slash_`date -I`
>> #CZ23 22 * * * du -cs /home/aras/backup/* > du_home_aras_backup_`date -I`
>> #CZ27 22 * * * du -cs /home/aras/acis/* > du_home_aras_acis_`date -I`
>> #CZ33 22 * * * du -cs /home/* > du_slash_home_`date -I`
>> #CZ36 01 * * * du -cs /var/lib/mysql/* > du_var_lib_mysql_`date -I`
>> #CZ39 01 * * * du -cs /var/* > du_slash_var_`date -I`
>> 
>> Are they any good? The machine crashed twice after du -cs /* >
>> du_slash_`date -I`, as far I can see, and I just tried du -cs /home/* >
>> du_slash_home_`date -I` which took several minutes with full load, and the
>> machine was not responsive for a while after that. This worries me.
>> 
>> Christian Zimmermann                                     FIGUGEGL!
>> Department of Economics
>> University of Connecticut
>> 341 Mansfield Road, Unit 1063
>> Storrs, CT 06269-1063
>> http://ideas.repec.org/zimm/   christian.zimmermann at uconn.edu
>> http://ideas.repec.org/e/pzi1.html
>> 
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>
> -ivan
>
>
>