Re: Per-process I/O accounting in RHEL?

Ed wrote:
> We need to know the current
> quantitative I/O rates for each process while these processes are still
> running.

This is on top of my RHEL wish-list, too -- along with a topas-like tool 
(as known from AIX) which shows disk/NIC busy% rates.

Another storage related feature which I really miss:
If the size of a disk is increased (e.g. due to a logical drive size 
increase in the SAN), the increased capacity should be discovered by the 
OS (perhaps after running some "check_for_changed_block_devices" 
command). With RHEL 5 (and probably earlier), I haven't found a way, 
other than a reboot.

Oh, and: There shoud be a more civilized way to have RHEL re-scan the 
SCSI devices, instead of echoing special values into various files in 
the /sys file system.


If most of these storage-related features were available in RHEL, we 
could start planning to phase out AIX.

-- 
Regards,
Troels Arvin <troels-8CYBEQWS7Lo@xxxxxxxxxxxxxxxx>
http://troels.arvin.dk/