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List:       subversion-issues
Subject:    [Issue 622] Changed - Memory used during a checkout
From:       issues () subversion ! tigris ! org
Date:       2002-05-28 19:34:33
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http://subversion.tigris.org/issues/show_bug.cgi?id=622

*** shadow/issues_15/622	Mon May 20 20:05:56 2002
--- shadow/issues_15/622.tmp.27283	Tue May 28 12:34:33 2002
***************
*** 2,9 ****
  | Memory used during a checkout                                              |
  +----------------------------------------------------------------------------+
  |      Issue #: 622                       Component: subversion              |
! |       Status: STARTED                     Version: current                 |
! |   Resolution:                            Platform: All                     |
  |   Issue type: DEFECT                   OS/Version: All                     |
  |     Priority: P2                     Subcomponent: src                     |
  +----------------------------------------------------------------------------+
--- 2,9 ----
  | Memory used during a checkout                                              |
  +----------------------------------------------------------------------------+
  |      Issue #: 622                       Component: subversion              |
! |       Status: RESOLVED                    Version: current                 |
! |   Resolution: FIXED                      Platform: All                     |
  |   Issue type: DEFECT                   OS/Version: All                     |
  |     Priority: P2                     Subcomponent: src                     |
  +----------------------------------------------------------------------------+
***************
*** 63,65 ****
--- 63,85 ----
  milestone.  It's an issue with apr pools not re-using memory.
  
  Sander and I are going to be reviewing pool patches this week.
+ 
+ 
+ ------- Additional Comments From sussman@tigris.org  2002-05-28 12:34 -------
+ OK, here's the final deal on this situation.
+ 
+ As Kirby pointed out, the memory consumed during checkout *was*
+ proportional to the number of files received (at least, over
+ ra_local.)  This is because apr's pools never, ever free or re-use
+ memory;  memory usage can only grow until the main process exits.
+ 
+ At least, that's how pools used to be.  Sander has changed the pools
+ implementation so that memory is now being re-used, and so that the
+ global 'free list' of available pool memory is never greater than 4 megs.
+ 
+ If you update subevrsion to r2017 (and update apr as well), checkouts
+ and filesystem dumps are now much more reasonable.  They tend to grow
+ to a certain size (somewhere between 12 and 19 megs) and then
+ "stabilize" for the remainder of the operation (as memory is re-used.)
+ 
+ Closing this issue.

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