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changeset 72:84c7edc1a619

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Add note about Perl memory allocator behaviour.
author Matti Hamalainen <ccr@tnsp.org>
date Thu, 27 Aug 2009 00:28:43 +0300
parents cc6d710886e5
children 5d722da1392b
files README
diffstat 1 files changed, 15 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/README	Thu Aug 27 00:17:47 2009 +0300
+++ b/README	Thu Aug 27 00:28:43 2009 +0300
@@ -35,6 +35,21 @@
  - LWP::UserAgent (libwww-perl)
 
 
+Memory requirement considerations
+=================================
+Because Maltfilter is written in Perl, it (or rather the Perl interpreter
+it is running under) tends not to free any allocated memory. This is NOT
+a memory leak per se, but a feature of Perl's memory allocator. Currently
+allocated memory is simply reused for other structures when needed,
+thus making the VIRT consumption periodically rise.
+
+However, there may be some situations (none that I have experienced myself
+as of yet, but as usual anything is possible) where Maltfilter's memory
+consumption rises to unbearable level. In high-volume servers it may be
+useful to periodically restart (as in complete restart, not reload via HUP)
+the daemon to free the memory.
+
+
 Installation
 ============
 Copy maltfilter script to /usr/sbin and set permissions