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- From: kek@bullterrier.Eng.Sun.COM (Kevin Kalajan - SunConnect Product Marketing)
- Newsgroups: comp.protocols.ibm
- Subject: JES2 Performance Problem
- Date: 11 Jan 1993 23:05:13 GMT
- Organization: Sun Microsystems, Inc.
- Lines: 17
- Distribution: world
- Message-ID: <ll3v99INNl3@exodus.Eng.Sun.COM>
- Reply-To: kek@bullterrier.Eng.Sun.COM
- NNTP-Posting-Host: bullterrier
-
- I could not post to bit.listserv.jes2-l.
-
- We have done exhaustive testing in trying to pinpoint why JES2
- is waiting anywhere from 1-4 seconds between sending blocks
- to a Sun emulating a 3770 SNA/RJE station. This includes Sniffer
- and GTF traces that show the link idle for the above time while
- we wait for JES2 to send the next block.
-
-
- What can we do to "tune" JES2? We have gone through tuning the NCP and cannot
- see any better results. Is there some buffer pool tuning that can be done to
- "pre-read" disk spool data in JES2 so that spool data can be sent from the
- buffer pool instead of waiting to read the disk? Is there internal throttle that
- JES2 is using that can be modified?
-
- Any help will be appreciated.
-
-