Am 03.03.2015 um 16:26 schrieb Christian Seiler: > Am 2015-03-03 15:33, schrieb Michael Biebl: >> Am 02.03.2015 um 15:42 schrieb Christian Seiler: >> >>> - SOLUTION (mostly the same as before, but SendBuffer is set on a >>> different unit and a Condition is added to the service): >>> >>> 1. Increase max_dgram_qlen to a reasonable value. The easiest >>> way is via a systemd service: >>> >>> /lib/systemd/system/systemd-setup-dgram-qlen.service: >>> [Unit] >>> DefaultDependencies=no >>> Before=syslog.socket >>> ConditionPathIsReadWrite=/proc/sys/net/unix/max_dgram_qlen >>> >>> [Service] >>> Type=oneshot >>> ExecStart=/sbin/sysctl -w net.unix.max_dgram_qlen=512 >>> StandardOutput=null >> >> A proper Description= is missing and it probably should have >> RemainAfterExit=yes. >> That said, why not simply use a sysctl.d conf snippet? > > systemd-sysctl.service is not ordered before the socket.
Yeah, see my other followup email. Can be fixed by adding After=systemd-sysctl.service to syslog.socket. Also it's > ordered after a bunch of services, and syslog.socket is typically > available really early. The only service I see ordered before systemd-sysctl.service is systemd-modules-load.service, and that one looks unproblematic, i.e. not something which would delay the start of syslog.socket noticeably. Then there is the proposed RequiresMountsFor=/usr/lib/sysctl.d/ which can translate into After=usr.mount, for a split-usr setup. In both cases, I don't see it leading to a regression compared to sysvinit, do you? >>> I've been using this on a Jessie system for the past couple of days >>> (well, drop-ins in /etc, actually), and I didn't notice any >>> side-effects so far. >> >> Did you run it with 1. and 2. applied, or only 1.? > > Only 1. so far. And 2. may not be necessary. [..] > So if the sysctl is reliably set before the socket is created, we > should be good, the buffer size change is probably not needed unless > there are REALLY long log messages. Given that it has been applied upstream (5e8b767df6e18444d5aff2987b5e5603361ed528), I personally wouldn't mind cherry-picking that patch. -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth?
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