Better logging - Revision history

Radostin: Add link to the wip/flog branch

2024-10-29T00:56:37Z

Add link to the wip/flog branch

Prakritigoyal19: This is the documentation of the work done during the GSoC 2020 period, for the project of optimizing logging engine. It contains the work done, usage of the work done and the tasks left pending.

2020-08-31T11:33:14Z

This is the documentation of the work done during the GSoC 2020 period, for the project of optimizing logging engine. It contains the work done, usage of the work done and the tasks left pending.

Xemul at 13:47, 18 August 2017

2017-08-18T13:47:51Z

Xemul: /* Log messages structuring */

2016-11-17T08:54:33Z

Log messages structuring

Xemul: Xemul moved page Logging to Better logging without leaving a redirect: This describes what we want, not what we have not

2016-09-16T15:15:27Z

Xemul moved page Logging to Better logging without leaving a redirect: This describes what we want, not what we have not

Xemul at 20:48, 10 December 2015

2015-12-10T20:48:20Z

Xemul: /* Log messages structuring */

2015-02-19T21:39:26Z

Log messages structuring

Xemul: /* Log messages structuring */

2015-02-19T21:37:54Z

Log messages structuring

Xemul: /* Log messages structuring */

2015-02-19T21:36:43Z

Log messages structuring

Xemul: /* Log messages structuring */

2015-02-19T21:36:16Z

Log messages structuring

← Older revision		Revision as of 00:56, 29 October 2024
Line 14:		Line 14:

	==== The Current Implementation ====		==== The Current Implementation ====
		+
		+	The current implementation for binary logging is available in the [https://github.com/checkpoint-restore/criu/tree/wip/flog <code>wip/flog</code> branch].

	The binary logger works such that it dumps the raw input string with all its arguments into a file. This implementation saves the time required to scan the input string and also the time consumed in coping these arguments into the string. It initially stores all the information in a buffer, and after the buffer fills up, its contents are dumped into a file. This file can later be passed into the decoder, which works independently of the criu execution, and can be read whenever needed.		The binary logger works such that it dumps the raw input string with all its arguments into a file. This implementation saves the time required to scan the input string and also the time consumed in coping these arguments into the string. It initially stores all the information in a buffer, and after the buffer fills up, its contents are dumped into a file. This file can later be passed into the decoder, which works independently of the criu execution, and can be read whenever needed.

@@ Line 7: / Line 7: @@
 == Binary logging ==
-Let's try to implement the idea of putting log arguments in binary form into a buffer and flushing one at the end if necessary.
+=== The Binary Logging Utility ===
-The majority of time spent in sprintf is in converting arguments to strings (e.g. %d). Next goes scanning the format string. At the end the string copying itself goes. If we manage to eliminat at least the first portion, that would be great.
+==== The Previous Implementation ====
 == Log messages structuring ==

@@ Line 38: / Line 38: @@
 ** Proc file format error (do we really expect this thing?)
 [[Category:Plans]]
 [[Category:Thinkers]]

@@ Line 19: / Line 19: @@
 *** PID mismatch
 *** File with the name we need exists
-*** CGroup exists (?)
+*** [[CGroups]] exist (?)
 ** Missing item on restore
-*** No TCP lock (for non netns case)
+*** No [[TCP connection]] locks (for non netns case)
-*** Missing session leader (--shell-job might help)
+*** Missing session leader ([[CLI/opt/--shell-job]] might help)
 *** Required file doesn't exist
 * Dump errors
-** Unsupported object
+** [[What cannot be checkpointed|Unsupported object]]
-*** AIO with events
+*** [[AIO]] with events
 *** Corked UDP socket
 *** Tasks under strace
-*** Knots in mount points
+*** Knots in [[mount points]]
 *** Too many of smth (open files) met
 * Common errors
@@ Line 35: / Line 35: @@
 ** Access denied / permission denied
 ** Other unexpected/unhandled syscall error
-** Error reading/writing image files
+** Error reading/writing [[images]]
 ** Proc file format error (do we really expect this thing?)

← Older revision		Revision as of 20:48, 10 December 2015
Line 40:		Line 40:
	[[Category:Development]]		[[Category:Development]]
	[[Category:Plans]]		[[Category:Plans]]
		+	[[Category:Thinkers]]

← Older revision	Revision as of 15:15, 16 September 2016
(No difference)

@@ Line 33: / Line 33: @@
 ** Out of memory
 ** Access denied / permission denied
 [[Category:Development]]
 [[Category:Plans]]