Posted Monday 24th November 2008 13:02 GMT
...just need a $5 million mainframe and a room full of silver haired guys to run the mother ship...
Posted Monday 24th November 2008 13:03 GMT
As someone interested in the Z platform I've been playing around with zLinux on Hercules which, believe it or not, is a mainframe emulator for your x86 box. It runs like an arthritic tortoise, but seems to work.
I might have to have a go with Sirius now.
When do we get a "Big Blue" icon to go with the good/bad jobs and gates?
Posted Monday 24th November 2008 14:03 GMT
(what movie??)
We have Hercules (and, ahem, z/OS) running on a Macbook - and it actually performs quite well!
It is good for porting and lightweight testing.
I wouldn't want to fire up CICS & DB2 or anything like that.
zLinux is slow on real 'z' hardware - there is so much emulation and other voodoo going on under the covers that it is and always will be a slug...
Posted Monday 24th November 2008 16:21 GMT
You must have some other problem with your zLinux performance, there is NO emulation going on on real z hardware... suggest you go over to IBMVM listserv and see whats going on http://listserv.uark.edu/archives/ibmvm.html
Posted Monday 24th November 2008 22:10 GMT
Regardless of emulation, z hardware is slow anyway. That's why IBM doesn't put out any benchmarks for z. sssssllllllooooowwwwww.....
Posted Monday 24th November 2008 22:10 GMT
Even better, go to the Linux for z series list:
http://www2.marist.edu/htbin/wlvindex?linux-390
The Velocity guys can probably help.
Posted Tuesday 25th November 2008 22:15 GMT
Slow? Depends on what you measure. Yes, the processors themselves have not historically been quick but the I/O subsystem is shit hot and will beat the hell out of pretty much anything else in terms of throughput. Horses, courses.
Posted Wednesday 26th November 2008 10:58 GMT
"Depends on what you measure."
How about actual performance. Overall performance. You need a balance and the Mainframe gives you reliability, stability, and predictability but it sure as heck runs slow... But at least you know it'll finish doing what it's doing... someday.
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