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authorBruce Momjian2005-01-31 22:57:17 +0000
committerBruce Momjian2005-01-31 22:57:17 +0000
commitd96398d1eb97fc3d18fb8f80b1ea09dd0af59489 (patch)
tree51e36be0b9c8e9721fe3aed71ea6a8c6bb826ade /doc/FAQ
parent1f7aa643b6302fe090da828cf3ba17eed9f2f917 (diff)
Restructure debug FAQ entry.
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diff --git a/doc/FAQ b/doc/FAQ
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@@ -1,7 +1,7 @@
Frequently Asked Questions (FAQ) for PostgreSQL
- Last updated: Mon Jan 31 15:40:24 EST 2005
+ Last updated: Mon Jan 31 17:57:02 EST 2005
Current maintainer: Bruce Momjian ([email protected])
@@ -383,24 +383,20 @@
3.4) What debugging features are available?
- PostgreSQL has several features that report status information that
- can be valuable for debugging purposes.
+ There are many log_* server configuration variables that enable
+ printing of query and process statistics which can be very useful for
+ debugging and performance measurements.
- First, by running configure with the --enable-cassert option, many
- assert()s monitor the progress of the backend and halt the program
- when something unexpected occurs.
+ The following detailed debug instructions are to be used to provide
+ more detailed information for server developers debugging a problem
- Both postmaster and postgres have several debug options available.
- First, whenever you start postmaster, make sure you send the standard
- output and error to a log file, like:
- cd /usr/local/pgsql
- ./bin/postmaster >server.log 2>&1 &
-
- This will put a server.log file in the top-level PostgreSQL directory.
- This file contains useful information about problems or errors
- encountered by the server. Postmaster has a -d option that allows even
- more detailed information to be reported. The -d option takes a number
- that specifies the debug level. Be warned that high debug level values
+ It is also possible to debug the server if it isn't operating
+ properly. First, by running configure with the --enable-cassert
+ option, many assert()s monitor the progress of the backend and halt
+ the program when something unexpected occurs.
+ The postmaster has a -d option that allows even more detailed
+ information to be reported. The -d option takes a number that
+ specifies the debug level. Be warned that high debug level values
generate large log files.
If postmaster is not running, you can actually run the postgres
@@ -421,10 +417,6 @@
process with the debugger, set any breakpoints, and continue through
the startup sequence.
- There are several log_* server configuration variables that enable
- printing of process statistics which can be very useful for debugging
- and performance measurements.
-
You can also compile with profiling to see what functions are taking
execution time. The backend profile files will be deposited in the
pgsql/data/base/dbname directory. The client profile file will be put