On 12/01/2010 07:38 PM, ma...@manfbraun.de wrote:
Hello !

I am just using this to log:

LogFormat \
        "%{%F %T}t\t%v\t%p\t%h\t%{User-Agent} ... \
        vhost_combined2

CustomLog "|/usr/bin/mono /test/eco.exe /var/log/apache2/extra_log 86400" \
        vhost_combined2

Okay.

May I use just a named pipe?

You may log to any target the CustomLog documentation says is supported.

  What will happen, it the reader has a short
"dropout", is there a buffer and if not, would apache continue to log
to that pipe later?

If the logging process is interrupted for any reason, apache can obviously not guarantee logging.

If I use only one [global] logging directive, would all instances
really use this one log?

Yes.

Because the timestamp does not contain milliseconds, how can I
determine, which request was the first? Would it help me, just
to subtract the processing-time?

Probably not.
Use a logging mechanism that records milli- or microseconds if you need that. The apache log contains the time of *completion* for the entire request, not the start time.

It would really help me to understand, how the logging
is really working!

It's well documented at http://httpd.apache.org/docs/current/logs.html


--
J.


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