Date: Sat, 21 Mar 2015 01:35:47 +0100 From: Miroslav Lachman <000.fbsd@quip.cz> To: freebsd-stable Stable <freebsd-stable@FreeBSD.org> Subject: rctl logs swapuse even if swap is empty Message-ID: <550CBCE3.6040908@quip.cz>
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I tried RCTL for the first time, so maybe it is error on my side. I have system with 2 jail with the following rctl.conf jail:fox:swapuse:log=32M jail:fox:swapuse:deny=512M jail:fox:memoryuse:log=3G jail:fox:memoryuse:deny=4096M jail:olymp:swapuse:log=32M jail:olymp:swapuse:deny=512M jail:olymp:memoryuse:log=2G jail:olymp:memoryuse:deny=3072M Both jails are small webservers with PHP + Apache. They do not use much memory and they really do not user any swap space. (according to top and swapinfo) # swapinfo -h Device 1K-blocks Used Avail Capacity /dev/mirror/gm0s1b 16777216 0B 16G 0% # rctl -hu jail:fox | grep swap swapuse=0 Processes in both jails are logged as using more than 32MB of swap: Mar 21 01:18:55 neon kernel: rctl: rule "jail:fox:swapuse:log=33554432" matched by pid 20783 (httpd), uid 80, jail fox Mar 21 01:18:55 neon kernel: rctl: rule "jail:fox:swapuse:log=33554432" matched by pid 20787 (httpd), uid 80, jail fox Mar 21 01:18:58 neon kernel: rctl: rule "jail:fox:swapuse:log=33554432" matched by pid 19207 (httpd), uid 80, jail fox Mar 21 01:18:58 neon kernel: rctl: rule "jail:fox:swapuse:log=33554432" matched by pid 20790 (sh), uid 0, jail fox Mar 21 01:18:58 neon kernel: rctl: rule "jail:fox:swapuse:log=33554432" matched by pid 20792 (sh), uid 0, jail fox Mar 21 01:18:58 neon kernel: rctl: rule "jail:olymp:swapuse:log=33554432" matched by pid 20793 (sh), uid 0, jail olymp Mar 21 01:18:58 neon kernel: rctl: rule "jail:olymp:swapuse:log=33554432" matched by pid 20795 (sh), uid 0, jail olymp Is it expected? I do not think so. Or am I doing something wrong with rctl? # uname -srmi FreeBSD 10.1-RELEASE-p8 amd64 GEN_RCTL Kernel is GENERIC + RCTL options Miroslav Lachman
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