PS:

On Mo 18.Jan'10 at 18:17:56 +0100, Carlos R. Mafra wrote:
> ...

> [ I get really worried when I 'blktrace -a write' my /home when actively
>   using chrome. Just a 2-minute experiment here while I was writing this
>   email ended up like this:
> 
...
> blktrace (4226)
>  Reads Queued:           0,        0KiB  Writes Queued:           0,        
> 0KiB
>  Read Dispatches:        0,        0KiB  Write Dispatches:        0,        
> 0KiB
>  Reads Requeued:         0               Writes Requeued:         0
>  Reads Completed:        0,        0KiB  Writes Completed:        8,      
> 204KiB

This time I was inside /home taking the blktrace, but I usually do it from
inside /root which is in /dev/sda2 and uses ext4 to avoid disturbing
the result of measuring what is going on with btrfs in /dev/sda3.
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