[rrd-users] FreeBSD memory leak in fadvise

Steven Hartland killing at multiplay.co.uk
Sat Oct 20 00:56:11 CEST 2012

Just wanted to give people a heads up about a kernel memory leak
in FreeBSD's fadvise that effects users of rrdtool as it uses
this function.

If your on 8.3-RELEASE and use rrdtool then your likely
effected by this issue and should either upgrade to 8-STABLE or
compile you kernel with the fix introduced by svn r234661 which
can be found here:-

If you want to check if you are affected the following will tell
vmstat -m | grep fadvise

If you see a large number listed your effected by this leak.

If you combine this with ZFS you can end up with a machine that
hard locks when it runs low on kva so hope this helps :)


This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. 

In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337
or return the E.mail to postmaster at multiplay.co.uk.

More information about the rrd-users mailing list