RE: TSM on Linux hosted on i5 outperforms TSM running on i5/os PASE. -- MIDRANGE-L

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Is PASE not a giant interpreter?  Kinda like comparing basic interpreter
to compiled basic.  Everything should run faster using native code
compared to interpreted code.


Christopher Bipes
Information Services Director
CrossCheck, Inc.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of rob@xxxxxxxxx
Sent: Monday, June 12, 2006 6:42 AM
To: ADSM-L@xxxxxxxxxxxxx; midrange-l@xxxxxxxxxxxx
Subject: TSM on Linux hosted on i5 outperforms TSM running on i5/os
PASE.

We were running TSM 5.2.4 on i5/OS PASE.  Since IBM dropped support for
i5/OS PASE for TSM we migrated to a Linux lpar hosted on the same box. 
Running a newer version of TSM.  Basically we carved out a Linux lpar
out of the existing i5/os lpar and used the same exact hardware:  5704
card to IBM 2109-F16 SAN switch to IBM 3582-L23 tape drive.  The time it
takes to fill up a 3582 cartridge dropped from 6 hours to 3.

Just goes to show you that the PASE API's for tape suck.  And IBM freely
admits this.

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