Time to plug the Solaris Internals books again. Much (if not all) of what we are discussing here is covered very nicely in those books.
Solaris Internals, Second Edition: Solaris 10 and OpenSolaris Kernel Architecture and Solaris Performance and Tools: DTrace and MDB Techniques for Solaris 10 and OpenSolaris See http://www.sun.com/books/solaris_series.html for details. Get them. Read them. Love them. I think it's worth noting that %b is not *necessarily* useless - but moreover that it can tell lies in terms of 'saturation'. You may be able to get to 100%b and not yet be saturated because the disk controller / raid controller might be able to do more, in spite of the fact that 100% of the interval, the device was busy doing something. So - It's as much about understanding how it applies to your disk subsystem. For what it's worth - for me, it's little more than a wet finger in the air... ;) (Then again, sometimes, that wet finger can tell you a lot... Like - Don't lick your finger after scratching your bum...) Cheers! Nathan. Alexander Box wrote: > > Boris - Thanks for this. > > In the document Brendan makes use of %b in iostat, which he/the > co-authors also recommend doing in Solaris Performance and Tools. Given > that this was discouraged on Wednesday, is there a more accurate > equivalent available? > > Boris Tsun <boris.tsun at gmail.com> wrote on 18/09/2009 02:53:30 PM: > > > Hi Bill, > > attached is a document that i reference that you might find > useful. > > > > > > regards > > > > Boris Tsun > > Disclaimer: The information transmitted is intended only for the person > or entity to which it is addressed and may contain confidential and/or > privileged material. Any review, retransmission, dissemination or other > use of, or taking of any action in reliance upon, this information by > persons or entities other than the intended recipient is prohibited. If > you received this in error, please contact the sender and delete the > material from your computer. > Privacy: If you are responding to this email or providing personal > information to the SRO for the purposes of one of the Acts it > administers, such information is used only for the purpose for which it > was collected (administration of SRO legislation ) and is protected by > the Information Privacy Act 2000 and secrecy provisions contained in > legislation administered by SRO. It is not disclosed otherwise than in > accordance with the law. If you would like a copy of the SRO Privacy > Policy please refer to SRO website (www.sro.vic.gov.au) or contact SRO > on 13 21 61 and request a copy. > > > ------------------------------------------------------------------------ > > _______________________________________________ > ug-msosug mailing list > ug-msosug at opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/ug-msosug
