CLASS NAME(CSVLLA)           /* CLASS NAME FOR LIBRARY LOOKASIDE     */
      EMAJ(LLA)              /* MAJOR NAME FOR LIBRARY LOOKASIDE     */
      MAXVIRT(65536)            /*         MAXVIRT  65536 4K BLOCKS  */
                                /*                 = 256MB           */
/*                                                                   */
CLASS NAME(IRRGMAP)             /* OPENMVS-RACF GMAP TABLE           */
      EMAJ(GMAP)                /* MAJOR NAME OF IRRGMAP CLASS       */
/*                                                                   */
/*                                                                   */
CLASS NAME(IRRSMAP)             /* OPENEDITION SECURITY PACKET       */
      EMAJ(SMAP)                /* MAJOR NAME OF IRRSMAP CLASS       */
/*                                                                   */
/*                                                                   */
CLASS NAME(IRRUMAP)             /* OPENMVS-RACF UMAP TABLE           */
      EMAJ(UMAP)                /* MAJOR NAME OF IRRSMAP CLASS       */
/*                                                                   */
/*                                                                   */
CLASS NAME(IRRGTS)              /* CLASS NAME FOR RACF GTS           */
      EMAJ(GTS)                 /* MAJOR NAME OF IRRGTS CLASS        */
      MAXVIRT(256)              /*         MAXVIRT = 256  4K BLOCKS  */
                                /*                 =  1MB            */
/*                                                                   */
/*                                                                   */
CLASS NAME(IRRACEE)             /* CLASS NAME FOR RACF ACEE CACHE    */
      EMAJ(ACEE)                /* MAJOR NAME OF IRRACEE CLASS       */
      MAXVIRT(8192)             /*         MAXVIRT = 8192 4K BLOCKS  */
                                /*                 = 32MB            */


Look at the SMF Type 41 records.   

Easy performance boost often is raise MAXVIRT on CSVLLA to avoid
trimming. 
Many sites have never increased the MAXVIRT on CSVLLA even though they
have added lots of real storage.

        Best Regards, 

                Sam Knutson, GEICO 
                System z Performance and Availability Management 
                mailto:[EMAIL PROTECTED] 
                (office)  301.986.3574              

"Think big, act bold, start simple, grow fast..." 



-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of John Norgauer
Sent: Thursday, January 31, 2008 5:51 PM
To: [email protected]
Subject: VLF - What's in your VLF

What are the entries in your VLF that give your system a big performance
boost?

John Norgauer
University of California Davis Medical Center
2315 Stockton Blvd
ASB 1300
Sacramento, Ca 95817
916-734-0536

 SYSTEMS PROGRAMMING......  Guilty, until proven innocent !! "    JN
2004
........
"Hardware eventually breaks - Software eventually works"      anon
........
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