Mainframe Performance Topics with Martin Packer

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3G Card and Sufficient Rurality

MartinPacker Comments (2) Visits (6039)

I'm writing this in the back of a taxi - on my way to Heathrow. (A 3G card for my Thinkpad was waiting for me when I got home yesterday.) My conclusion is that we live somewhere "sufficiently rural" as I've lost signal once . (That was between us and Henley.) Any more than that and I'd think we lived in the sticks. As it is to actually lose the signal at all is a reassurance that we don't live... [More]

Twitter - twittering on? Or real insight

MartinPacker Comments (5) Visits (6988)

Whichever it is, here's my Twitter badge. Feel free to befriend. :-) follow martinpacker at http://twitter.com

Wikipedia

MartinPacker Visits (4293)

Whatever one's feelings about the definitiveness of Wikipedia a lot of people find themselves there, looking for information. Having twice anonymously edited articles - in one case to correct an error, in the other to add a minor snippet - I finally succumbed to the urge to get an ID. So my efforts aren't quite so anonymous - and are therefore a bit more accountable. I'm not going to go overboard... [More]

DB2 9 and End Of Service For DB2 Version 7

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Willie Favero is also blogging about this - and I stole the link from him... Here's the End of Service announcement for DB2 Version 7 . It goes out of service on June 30, 2008. I've just sat through four days of the T3 class for DB2 9 for z/OS - in Silicon Valley Lab. My "take home" message is that there's lots of stuff in all the usual areas. It's a truly exciting release. Note: It's "DB2 9" and... [More]

z/OS Release 9 is Previewed

MartinPacker Visits (4780)

See the z/OS Release 9 preview statement if you're interested in z/OS. There are lots of interesting Performance items previewed, as well as other line items. It's expected to become available in September 2007, following the current pattern of a new release each year (preview in the so-called Spring :-)and release in the Autumn) so expect lots more information on it later this year. I do wonder... [More]

z/OS Release 8 Real Storage Changes

MartinPacker Visits (5093)

I suggested (in z/OS Release 8 Real Storage Manager SMF Record Changes ) that I might talk about the changes to RSM in z/OS Release 8. As the release has been out now for about 4 months some of you might actually be on the brink of putting it into production. :-) Seriously, you probably are planning for the day when someone cuts over to Release 8. RSM was largely rewritten - for a very good... [More]

Going The Distance

MartinPacker Visits (7560)

I presented to the Large Systems GSE meeting in Dudley on Wednesday on "DB2 Data Sharing Performance For Beginners" and an interesting question came up... "At what distance does performance begin to suffer when moving machines in a parallel sysplex apart?" As it happens I am dealing with exactly that question in a customer right now. It seems it's a popular thing to attempt. (I know: One user... [More]

Tags: sysplex duplexing parallel

z/OS Release 8 CPU SMF Record Changes

MartinPacker Visits (7154)

I've just been looking at some fascinating SMF 70 records. They come from a System z9 EC S54 machine and the LPAR they're from is running z/OS Release 8. I say "fascinating" because: I've not seen an S54's data before. (This is the largest z9 machine - with all 4 processor books fully populated with engines.) There are changes that I asked RMF (and PR/SM) Development to add into Release 8 that I'm... [More]

Tags: smf z/os

z/OS Release 8 Real Storage Manager SMF Record Changes

MartinPacker Visits (7586)

In z/OS Release 8 Real Storage Manager (RSM) implemented brand new algorithms. One of the more significant changes was the adoption of a "new style" UIC value. This behaves much more like the old Expanded Storage Migration Age. Accordingly the old UIC value (SMF71ACA) isn't really appropriate to use anymore. Or at least it won't behave the way it used to. And before I go any further the SMF Type... [More]

Tags: smf z/os

CICS and SecondLife

MartinPacker Comment (1) Visits (11388)

In Mainframe v-Business Boas Betzler threw out a challenge: "Demonstrate SecondLife talking to CICS". I've picked this up on behalf of IBM. Now, why on earth would you want to do that, Martin? To get beyond the "because it's fun" answer (which is also true) let me tell you my view on SecondLife... First, it is NOT a game. Emphatically not. Though it is a lot of fun. By way of analogy consider the... [More]

Tags: secondlife cics

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