SUMMARY: I/O rates by process?

From: Adametz, Bluejay <bluejay_at_fujigreenwood.com>
Date: Tue, 20 Mar 2001 14:49:38 -0500

The original question:

> The applications people for one of our Tru64 clusters (4.0F)
> are saying that
> there's an awful lot of disk activity going on and want to know which
> process(es) is(are) causing it. Apparently it's very unusual for this
> application to behave this way.
>
> Are there any utilities I can use to obtain that information?
> On VMS (VMS
> and I go way back) I'd just do a MONITOR PROCESS/TOPDIO, but
> I'm largely
> clueless as to what I could use on UNIX, Tru64 or otherwise.

Answers fell into two basic categories: use ps, or use some other, more
specific utility.

I ended up using ps because it's something I have, and the powers that be
(including myself) are loathe to do installs of most any kind on the fly on
production critical systems. I grab the output of a
        ps axo pid,cmd,inblk,oublock
in a little piece of C code I wrote and output deltas of the block counts
over time.

The collect utility was recommended, but it's presently unavailable from
Compaq's FTP site.

There is said to be a "Performance Manager" product on the V4.0F
distribution disk, but I didn't get that far.

Much thanks to alan_at_nabeth.cxo.dec.com, Kat, Henry Joy McCRACKEN, Mario
Fortier, Michael Guerette, and Robert Fridman, not necessarily in that order
:).
---
Bluejay Adametz, CFII, A&P	bluejay_at_fujigreenwood.com
Fuji Photo Film, Inc.		+1 864 223 2888 x1369
Greenwood, SC, USA
---
"If you understand what you're doing, you're not learning anything." - A. L.
Received on Tue Mar 20 2001 - 19:54:41 NZST

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