it is possible to get the 'unbuffered' mode, but you have to work hard to do it
and the performance will utterly suck (even if you have a
battery-backed-ramdisk, the system calls and serialization will cripple your
performance)
I think this has been the default since at least rsyslog 3, around 20 years ago.
David Lang
On Fri, 30 Sep 2022, Rainer Gerhards via rsyslog wrote:
Date: Fri, 30 Sep 2022 00:02:28 +0200
From: Rainer Gerhards via rsyslog <rsyslog@lists.adiscon.com>
To: rsyslog-users <rsyslog@lists.adiscon.com>
Cc: Rainer Gerhards <rgerha...@hq.adiscon.com>
Subject: Re: [rsyslog] Equivalent omfile action to a file prefixed by '-'?
The - does not throw a syntax error, but is ignored for many years. iIRC it
caused a sync after each write, which would be crazy for actual systems.
Rainer
Sent from phone, thus brief.
John Chivian via rsyslog <rsyslog@lists.adiscon.com> schrieb am Do., 29.
Sep. 2022, 23:25:
If I am not mistaken, buffering is the default in the new syntax such that
it is not necessary to state it explicitly. The maintainers will know for
sure.
On Sep 29, 2022, at 15:54, Gordon Marler (BLOOMBERG/ 120 PARK) via
rsyslog <rsyslog@lists.adiscon.com> wrote:
In the old style of rsyslog configuration, you can say that you want to
buffer a file, rather than flush it after every write, with syntax like
this (prefixing the filename with '-'):
local4.info -/var/log/mylog
Reading the documentation of the omfile Output Module, I don't see an
exact way to specify the exact same end result documented, such that you
could write something like:
local4.info {
action( type="omfile" file="/var/log/mylog" ...)
}
I see all the following, but not sure of the exact combined config to
equate to the old syntax:
* flushInterval
* asyncWriting
* flushOnTxEnd
* ioBufferSize
* sync
Thanks for any insight into achieving this goal.
GM
_______________________________________________
rsyslog mailing list
https://lists.adiscon.net/mailman/listinfo/rsyslog
http://www.rsyslog.com/professional-services/
What's up with rsyslog? Follow https://twitter.com/rgerhards
NOTE WELL: This is a PUBLIC mailing list, posts are ARCHIVED by a myriad
of sites beyond our control. PLEASE UNSUBSCRIBE and DO NOT POST if you
DON'T LIKE THAT.
_______________________________________________
rsyslog mailing list
https://lists.adiscon.net/mailman/listinfo/rsyslog
http://www.rsyslog.com/professional-services/
What's up with rsyslog? Follow https://twitter.com/rgerhards
NOTE WELL: This is a PUBLIC mailing list, posts are ARCHIVED by a myriad
of sites beyond our control. PLEASE UNSUBSCRIBE and DO NOT POST if you
DON'T LIKE THAT.
_______________________________________________
rsyslog mailing list
https://lists.adiscon.net/mailman/listinfo/rsyslog
http://www.rsyslog.com/professional-services/
What's up with rsyslog? Follow https://twitter.com/rgerhards
NOTE WELL: This is a PUBLIC mailing list, posts are ARCHIVED by a myriad of
sites beyond our control. PLEASE UNSUBSCRIBE and DO NOT POST if you DON'T LIKE
THAT.
_______________________________________________
rsyslog mailing list
https://lists.adiscon.net/mailman/listinfo/rsyslog
http://www.rsyslog.com/professional-services/
What's up with rsyslog? Follow https://twitter.com/rgerhards
NOTE WELL: This is a PUBLIC mailing list, posts are ARCHIVED by a myriad of
sites beyond our control. PLEASE UNSUBSCRIBE and DO NOT POST if you DON'T LIKE
THAT.
