As we said in our newsletter, the events of September 11th shocked and saddened us all. Our hearts and minds are with all those affected. Some of our readers in the Middle East have written to remind us that the terrorists do not represent their faith of Islam. We understand, and we hope that our…
1. z/OS Correction 2. Cheryl Watson’s TUNING Letter 2001, No. 3 1. z/OS Correction Thanks to Kent Ramsay of webMethods, Inc. for pointing out two typos in this issue of the TUNING Letter. (Note – these corrections were made to the print copy, but did not make it into the email copy.) On page 3,…
1. See You at SHARE! 2. WLM I/O Priority 3. Update to January 2001 CPU Chart 4. Cheryl Watson’s TUNING Letter 2001, No. 3 1. See You at SHARE! Next week is SHARE in Minneapolis. I’ll be giving my “Hot Flashes” on Friday morning at 9:30am (session 2543). Hope to see you sometime during the…
1. Java URL Correction 2. New Enclave APAR 3. Cheryl Watson’s TUNING Letter 2001, No. 2 1. Java URL Correction Andreas Steinberg noted that our link to the Java DeveloperWorks URL mentioned on page 28 is no longer active. You should use: http://www.ibm.com/developerworks/java. 2. New Enclave APAR Greg Dyck of IBM’s z/OS Core Technology Design team…
1. RMF APAR Correction 2. Cheryl Watson’s TUNING Letter 2001, No. 1 1. RMF APAR Correction On page 4 of the 2001, No. 1 newsletter, I mentioned an RMF APAR, OW47563. This was a typo and should have been listed as OW47653. 2. Cheryl Watson’s TUNING Letter 2001, No. 1 The forty-four page 2001, No….
1. Updates to CPU Chart 2. New Redbook for OS/390 R10 1. Updates to CPU Chart An update to our January 2001 CPU Chart will be sent with our TUNING Letter 2001, No. 1 which will be emailed this week and mailed next week. There are two items: Amdahl updated the service unit per second…
1. zSeries Update 2. Update to High CPU APAR 1. zSeries Update In the last Cheryl’s List (#50), I discussed a problem with some types of work that did not achieve their expected capacity when running on a z900 processor. Fortunately, great strides have been made since then. The z900 design change to separate the…
1. zSeries Update 2. January 2001 CPU Chart is Available 3. 1991-2000 CD-ROMs Mailed 1. zSeries Update I’ve received feedback from two z900 sites who did not receive their expected performance when running SAS-based work (up to 30% less capacity than expected). Another user reported a 13% under-capacity reading on SAS work on the MXG…
1. zSeries LSPR Updates 2. CPU Chart in Spreadsheet Format! 3. Cheryl Watson’s TUNING Letter 2000, No. 6 Summary 4. SHARE in Long Beach 1. zSeries Updates On February 24, IBM updated the LSPR ratings previously published in December. They made the decision to update the ratings after further testing of the new processors. Models…
1. zSeries Shipments 2. Cheryl Watson’s TUNING Letter 2000, No. 5 Summary 1. zSeries Shipments The majority of questions I’ve received lately are asking whether the zSeries machines have been delayed. There was a news item recently that said that IBM was delaying some shipments of the z900s, expected to be in GA by December…
