[Mageia-dev] [RFC] rsyslog vs journalctl

Sun Feb 10 13:06:25 CET 2013

'Twas brillig, and eatdirt at 09/02/13 15:18 did gyre and gimble:
+> 
+>> Are you sure that there still is a problem? There were some bugs that
+>> have been fixed months ago. Aside from that the memory usage could be
+>> off as journal uses mmap.
+>>
+>> But systemd always uses the journal (not runtime configurable IIRC), so
+>> best to make it efficient. It should also somehow be low maintenance.
+>> Meaning: maybe it will use less memory when there is less available
+>> (guessing)?
+>>
+> 
+> 
+> I don't know about mmap, but that's what a top gives on the current cooker:
+> 
+>  326 root       1   0 1064m  37m  36m S    0  1.9   0:14.73 systemd-journal
+> 
+> even though it is only virtual, that's sound crazy to go up 1GB.
+> rsyslog never goes above 1M.
+
+The virtual size is more or less irrelevant for judging how much memory
+it actually uses. In some cases it does help identify some leaks (tho'
+not classic memory leaks - more mmap leaks - found and fixed one of
+those a while back).
+
+It is a little higher than I'd expect all the same tho'. I'll double
+check that no regressions have snuck in on the mmap window caching stuff.
+
+Col
+
+
+-- 
+
+Colin Guthrie
+colin(at)mageia.org
+http://colin.guthr.ie/
+
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