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<H1>[Mageia-dev] [RFC] rsyslog vs journalctl</H1>
<B>Colin Guthrie</B>
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TITLE="[Mageia-dev] [RFC] rsyslog vs journalctl">mageia at colin.guthr.ie
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<I>Sun Feb 10 13:06:25 CET 2013</I>
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<PRE>'Twas brillig, and eatdirt at 09/02/13 15:18 did gyre and gimble:
><i>
</I>>><i> Are you sure that there still is a problem? There were some bugs that
</I>>><i> have been fixed months ago. Aside from that the memory usage could be
</I>>><i> off as journal uses mmap.
</I>>><i>
</I>>><i> But systemd always uses the journal (not runtime configurable IIRC), so
</I>>><i> best to make it efficient. It should also somehow be low maintenance.
</I>>><i> Meaning: maybe it will use less memory when there is less available
</I>>><i> (guessing)?
</I>>><i>
</I>><i>
</I>><i>
</I>><i> I don't know about mmap, but that's what a top gives on the current cooker:
</I>><i>
</I>><i> 326 root 1 0 1064m 37m 36m S 0 1.9 0:14.73 systemd-journal
</I>><i>
</I>><i> even though it is only virtual, that's sound crazy to go up 1GB.
</I>><i> rsyslog never goes above 1M.
</I>
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
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