LO38955: DOCUMENTATION IN HELP FILE NEEDED ABOUT "VMARG.XMX=-XMX256M" AND "VMARG.XMS=-XMS48M" AND NOTES CLIENT PERFORMANCE

APAR status

• Closed as fixed if next.

Error description

• This is an Enhancement request.
  Customer is requesting more information to be available in Help
  file regarding
  below values and the performance of Notes Client 8.5
    vmarg.Xmx=-Xmx256m
    vmarg.Xms=-Xms48m
  These parameters are located in the
  [notes_progdir]\framework\rcp\eclipse\plugins\com.ibm.rcp.j2se.w
  in32.x86
  _<...>\jvm.properties.
  Customer noticed that if the values are changed from
  vmarg.Xmx=-Xmx256m  to  vmarg.Xmx=-XmxXmx768m or even
  vmarg.Xmx=-Xmx1024m
  (N.B. half of the available RAM) the performance of the Notes
  increases
  dramatically.
  There is some info on the web but nothing officially from
  IBM:http://www.thenorth.com/apblog4.nsf/0/BB5DDB03611B2BB1852574
  D7005FF852
  << I've been reminded of this gem, given to me by skilled person
  I trust, which
  really speeds up the way Notes 8.x in Eclipse feels. I can't say
  if its
  actually faster, but it does feel much faster. I've heard some
  interesting
  stories about why this isn't set to a higher default, but since
  they're only
  stories I'm going to hold off repeating them.
  Use your file explorer to find this directory:
  {NotesProgramDirectory}\framework\rcp\eclipse\plugins\com.ibm.rc
  p.j2se.{Version
  }
  In this folder, look for the file "jvm.properties" One of the
  first lines that
  isn't commented out (preceeded by #) is:
   vmarg.Xmx=-Xmx256m
  Change that line to roughly half of your available ram. The
  recommendation I
  was given was actually 768, but since I have 3gb of RAM
  available to XP I set
  mine up a bit higher.
   vmarg.Xmx=-Xmx1024m
  Note: Make sure you close Notes before you do this, and that all
  the Notes
  processes are terminated. If you're not sure, reboot first.
  Go ahead, try it, and report what you think. >>
  http://www-10.lotus.com/ldd/nd85forum.nsf/5f27803bba85d8e285256b
  f10054620d/d534d
  7ba136470598525754e00015540?OpenDocument
  <<Subject: don't forget jvm.properties trick
  As Bruce Elgort and others have posted: you can increase the
  speed of the
  eclipse environment by providing it with a bigger heap. Look for
  the
  jvm.properties in side the framework directory. The original
  lines are:
  vmarg.Xmx=-Xmx256m
  vmarg.Xms=-Xms48m
  max heap size and min heap size. Set max to at least 512, and
  min heap size too.
  Do not set them higher than available RAM! A not very corborated
  sweet spot
  seems to be 1024
  Feedback response number WEBB7NS2B5 created by Lars Berntrop-Bos
  on
  29/01/2009>>
  

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

• This APAR is associated with SPR# RGAU7QGCMX.
  No doc changes for 8.5.2, so flagged for tech note, created V90
   cs doc
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Modules/Macros

• NA
  

Fix information

Applicable component levels

• R802 PSN

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