BackupPC-users

Re: [BackupPC-users] Noted Observations & Complaints Using BackupPC for 5 mon

2010-04-23 08:34:44
Subject: Re: [BackupPC-users] Noted Observations & Complaints Using BackupPC for 5 mon
From: Les Mikesell <lesmikesell AT gmail DOT com>
To: backuppc-users AT lists.sourceforge DOT net
Date: Fri, 23 Apr 2010 07:32:02 -0500
Saturn2888 wrote:
> Since it was mentioned before, here's iostat:
> 
> Every 2.0s: iostat                                                            
>                                                                               
>                                                           Fri Apr 23 05:34:51 
> 2010
> 
> Linux 2.6.24-27-server (grubber)        04/23/2010
> 
> avg-cpu:  %user   %nice %system %iowait  %steal   %idle
>           19.91    0.04    2.99   70.84    0.00    6.23
> 
> Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
> sda              92.73      1937.06      2538.96  196266513  257252240
> 

The first set of values from iostat is a long accumulation that you normally 
should ignore.  If you give a number on the command line it will run 
continuously reporting every so many seconds.  A value of 1 to 5 should give 
you 
  meaningful samples when the machine is busy.

But, that 70% iowait number pretty much tells you what the machine is doing 
with 
most of its time...

-- 
   Les Mikesell
    lesmikesell AT gmail DOT com


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