On Thu, 4 Aug 2005 00:48:17 -0500, Yi Ming <[EMAIL PROTECTED]> wrote:
>Hi, >Since the default SPOOLNUM=32, is there any performance impact setting >TGSPACE to also handle 32 spool volumes. ie. TGSPACE=(MAX=537504,WARN=80), >The JES2 (SA22-7533) manual suggest it okey setting this parameter >significantly higher than your present requirements dictate. The performance >cost should be minimal; > >If there minimal performance impact why isn't this the default rather than >current 16288. Anyone ? > >Regards, >Yi Ming > JES2 maintains a track group map on the checkpoint dataset IIRC. You may not wish to specify 32 spool volumes worth of track groups if you don't anticipate using that many. Allowing for reasonable growth is a good idea. There are facilities in JES2 for reconfiguring to a larger chkpt ds and altering the TGSPACE specification later if the need is anticipated. Bill ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
