diff options
| -rw-r--r-- | changelog.d/10518.feature | 1 | ||||
| -rw-r--r-- | docker/conf/log.config | 27 | ||||
| -rw-r--r-- | docs/sample_log_config.yaml | 27 | ||||
| -rw-r--r-- | synapse/config/logger.py | 27 |
4 files changed, 61 insertions, 21 deletions
diff --git a/changelog.d/10518.feature b/changelog.d/10518.feature new file mode 100644 index 0000000000..112e4d105c --- /dev/null +++ b/changelog.d/10518.feature @@ -0,0 +1 @@ +The default logging handler for new installations is now `PeriodicallyFlushingMemoryHandler`, a buffered logging handler which periodically flushes itself. diff --git a/docker/conf/log.config b/docker/conf/log.config index a994626926..7a216a36a0 100644 --- a/docker/conf/log.config +++ b/docker/conf/log.config @@ -18,18 +18,31 @@ handlers: backupCount: 6 # Does not include the current log file. encoding: utf8 - # Default to buffering writes to log file for efficiency. This means that - # there will be a delay for INFO/DEBUG logs to get written, but WARNING/ERROR - # logs will still be flushed immediately. + # Default to buffering writes to log file for efficiency. + # WARNING/ERROR logs will still be flushed immediately, but there will be a + # delay (of up to `period` seconds, or until the buffer is full with + # `capacity` messages) before INFO/DEBUG logs get written. buffer: - class: logging.handlers.MemoryHandler + class: synapse.logging.handlers.PeriodicallyFlushingMemoryHandler target: file - # The capacity is the number of log lines that are buffered before - # being written to disk. Increasing this will lead to better + + # The capacity is the maximum number of log lines that are buffered + # before being written to disk. Increasing this will lead to better # performance, at the expensive of it taking longer for log lines to # be written to disk. + # This parameter is required. capacity: 10 - flushLevel: 30 # Flush for WARNING logs as well + + # Logs with a level at or above the flush level will cause the buffer to + # be flushed immediately. + # Default value: 40 (ERROR) + # Other values: 50 (CRITICAL), 30 (WARNING), 20 (INFO), 10 (DEBUG) + flushLevel: 30 # Flush immediately for WARNING logs and higher + + # The period of time, in seconds, between forced flushes. + # Messages will not be delayed for longer than this time. + # Default value: 5 seconds + period: 5 {% endif %} console: diff --git a/docs/sample_log_config.yaml b/docs/sample_log_config.yaml index 669e600081..2485ad25ed 100644 --- a/docs/sample_log_config.yaml +++ b/docs/sample_log_config.yaml @@ -24,18 +24,31 @@ handlers: backupCount: 3 # Does not include the current log file. encoding: utf8 - # Default to buffering writes to log file for efficiency. This means that - # will be a delay for INFO/DEBUG logs to get written, but WARNING/ERROR - # logs will still be flushed immediately. + # Default to buffering writes to log file for efficiency. + # WARNING/ERROR logs will still be flushed immediately, but there will be a + # delay (of up to `period` seconds, or until the buffer is full with + # `capacity` messages) before INFO/DEBUG logs get written. buffer: - class: logging.handlers.MemoryHandler + class: synapse.logging.handlers.PeriodicallyFlushingMemoryHandler target: file - # The capacity is the number of log lines that are buffered before - # being written to disk. Increasing this will lead to better + + # The capacity is the maximum number of log lines that are buffered + # before being written to disk. Increasing this will lead to better # performance, at the expensive of it taking longer for log lines to # be written to disk. + # This parameter is required. capacity: 10 - flushLevel: 30 # Flush for WARNING logs as well + + # Logs with a level at or above the flush level will cause the buffer to + # be flushed immediately. + # Default value: 40 (ERROR) + # Other values: 50 (CRITICAL), 30 (WARNING), 20 (INFO), 10 (DEBUG) + flushLevel: 30 # Flush immediately for WARNING logs and higher + + # The period of time, in seconds, between forced flushes. + # Messages will not be delayed for longer than this time. + # Default value: 5 seconds + period: 5 # A handler that writes logs to stderr. Unused by default, but can be used # instead of "buffer" and "file" in the logger handlers. diff --git a/synapse/config/logger.py b/synapse/config/logger.py index ad4e6e61c3..4a398a7932 100644 --- a/synapse/config/logger.py +++ b/synapse/config/logger.py @@ -67,18 +67,31 @@ handlers: backupCount: 3 # Does not include the current log file. encoding: utf8 - # Default to buffering writes to log file for efficiency. This means that - # will be a delay for INFO/DEBUG logs to get written, but WARNING/ERROR - # logs will still be flushed immediately. + # Default to buffering writes to log file for efficiency. + # WARNING/ERROR logs will still be flushed immediately, but there will be a + # delay (of up to `period` seconds, or until the buffer is full with + # `capacity` messages) before INFO/DEBUG logs get written. buffer: - class: logging.handlers.MemoryHandler + class: synapse.logging.handlers.PeriodicallyFlushingMemoryHandler target: file - # The capacity is the number of log lines that are buffered before - # being written to disk. Increasing this will lead to better + + # The capacity is the maximum number of log lines that are buffered + # before being written to disk. Increasing this will lead to better # performance, at the expensive of it taking longer for log lines to # be written to disk. + # This parameter is required. capacity: 10 - flushLevel: 30 # Flush for WARNING logs as well + + # Logs with a level at or above the flush level will cause the buffer to + # be flushed immediately. + # Default value: 40 (ERROR) + # Other values: 50 (CRITICAL), 30 (WARNING), 20 (INFO), 10 (DEBUG) + flushLevel: 30 # Flush immediately for WARNING logs and higher + + # The period of time, in seconds, between forced flushes. + # Messages will not be delayed for longer than this time. + # Default value: 5 seconds + period: 5 # A handler that writes logs to stderr. Unused by default, but can be used # instead of "buffer" and "file" in the logger handlers. |