LogAnalysis
[logs] naming multiple output files with syslog-ng Dec 17 2007 02:20PM
Christian Folini (christian folini post ch) (2 replies)
RE: [logs] naming multiple output files with syslog-ng Dec 20 2007 03:55PM
Jan Monsch (jan monsch csnc ch) (1 replies)
RE: [logs] naming multiple output files with syslog-ng Dec 20 2007 04:25PM
Marcus J. Ranum (mjr ranum com) (3 replies)

Jan Monsch wrote:
>I personally do not like the solution, because the
>logger gets invoked by the Apache process and this most likely produces
>overhead in the Apache process.

#ifdef LONG_FORM

The first law of performance tuning is "first you measure, then you
speculate."

It's quite possible (and if you wanted to lay a bet...) that Apache
spends an infinitesimal amount of time and resources doing its
logging. It's also quite possible (consider the sequence of events!)
that Apache doesn't issue the log message until after the transaction
with the user is completed, in which case the impact on the user
is nonexistent. But the point is that nobody knows until somebody
measures.

Administrators consistently blow logging off because "it'll slow things
down." To which the correct response is always, "Really? When you
measured it, how significant was the impact?"

Back when I was programming full time, I used to regularly pick up free
lunches by betting people their guesses about performance bottlenecks
were wrong. :) I was a decent programmer, once, and pretty much
every time _I_ tried to guess about the bottlenecks in my own code,
I was wrong.

#endif

#ifdef WISEASS_FORM

WTF is someone doing even TALKING about performance if they
are running Apache?

That's like asking "is this stuff fattening?" around a mouthful of
pulled pork, Ben&Jerry's, and butter.

#endif

mjr.
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[ reply ]
Re: [logs] naming multiple output files with syslog-ng Dec 27 2007 01:14AM
Mordechai T. Abzug (morty frakir org) (1 replies)
Re: [logs] naming multiple output files with syslog-ng Jan 01 2008 01:05PM
Chris Brenton (cbrenton chrisbrenton org)
RE: [logs] naming multiple output files with syslog-ng Dec 20 2007 06:22PM
Paul Melson (pmelson gmail com) (1 replies)
Re: [logs] naming multiple output files with syslog-ng Dec 21 2007 06:55AM
Christian Folini (christian folini post ch) (2 replies)
Re: [logs] naming multiple output files with syslog-ng Dec 21 2007 04:16PM
Chris Wee (chris wee loglogic com) (1 replies)
Re: [logs] naming multiple output files with syslog-ng Dec 24 2007 10:49AM
Christian Folini (christian folini post ch)
RE: [logs] naming multiple output files with syslog-ng Dec 21 2007 10:19AM
Jan Monsch (jan monsch csnc ch) (1 replies)
RE: [logs] naming multiple output files with syslog-ng Dec 23 2007 08:06PM
Marcus J. Ranum (mjr ranum com)
Re: [logs] naming multiple output files with syslog-ng Dec 20 2007 05:23PM
Bill Burge (bill burge com)
Re: [logs] naming multiple output files with syslog-ng Dec 18 2007 06:22AM
Tom Le (dottom gmail com)


 

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