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author | Bruce Momjian | 2005-01-31 22:57:17 +0000 |
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committer | Bruce Momjian | 2005-01-31 22:57:17 +0000 |
commit | d96398d1eb97fc3d18fb8f80b1ea09dd0af59489 (patch) | |
tree | 51e36be0b9c8e9721fe3aed71ea6a8c6bb826ade /doc/FAQ | |
parent | 1f7aa643b6302fe090da828cf3ba17eed9f2f917 (diff) |
Restructure debug FAQ entry.
Diffstat (limited to 'doc/FAQ')
-rw-r--r-- | doc/FAQ | 34 |
1 files changed, 13 insertions, 21 deletions
@@ -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 |