I'm aware of what is available in Linux. But I said Unix. As in Aix. strace is a RPITA to use on something like RMAN. Pity IBM - of all companies! - provides so little gut-view software for that.Although there is probably some obscure add-on to Tivoli or similar to do all I need - meh!...
-- Cheers Nuno Souto in sunny Sydney, Australia dbvision@xxxxxxxxxxxx Amaral, Rui wrote,on my timestamp of 28/03/2011 10:15 PM:
For rhel 6 (similar in previous versions as well): http://people.redhat.com/msnitzer/docs/io-limits.txt more detail on the block devices files in sysfs: http://www.mjmwired.net/kernel/Documentation/ABI/testing/sysfs-block looking at queue size might help performance (depending on your i/o scheduler being used): http://yoshinorimatsunobu.blogspot.com/2009/04/linux-io-scheduler-queue-size-and.html one form of linux block tracing: http://linux.die.net/man/8/blktrace and example: http://kb.fusionio.com/KB/a27/howto-capture-a-block-trace-in-linux.aspx good ole strace also can give io and blocksize requests on running processes.
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