Announcing collectl - new performance linux performance monitor

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Special Forums News, Links, Events and Announcements Announcing collectl - new performance linux performance monitor
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Old 10-26-2007
Announcing collectl - new performance linux performance monitor

About 4 years ago I wrote this tool inspired by Rob Urban's collect tool for DEC's Tru64 Unix. What makes this tool as different as collect was in its day is its ability to run at a low overhead and collect tons of stuff. I've expanded the general concept and even include data not available in any other tool such as Infiniband or Lustre data. Collectl can collect it all and present it in a consistent output format. There's even an option to let you generate the data in plottable format.

Far to many features to talk about here but they are discussed on the website for collectl

Ever wonder why ALL tools that monitor linux network stats at 1 second intervals report the wrong numbers? The short answer is because the stats are only updated once ever 0.9765 seconds and unless you have a monitor that can run at fractional intervals like collectl, you'll get wrong numbers! You can read more about it on collectl's website but don't take my word for it. Download it and try it out.

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GIT-MERGETOOL(1)						    Git Manual							  GIT-MERGETOOL(1)

git-mergetool - Run merge conflict resolution tools to resolve merge conflicts SYNOPSIS
git mergetool [--tool=<tool>] [-y|--no-prompt|--prompt] [<file>]... DESCRIPTION
Use git mergetool to run one of several merge utilities to resolve merge conflicts. It is typically run after git merge. If one or more <file> parameters are given, the merge tool program will be run to resolve differences on each file. If no <file> names are specified, git mergetool will run the merge tool program on every file with merge conflicts. OPTIONS
-t <tool>, --tool=<tool> Use the merge resolution program specified by <tool>. Valid merge tools are: kdiff3, tkdiff, meld, xxdiff, emerge, vimdiff, gvimdiff, ecmerge, diffuse, tortoisemerge, opendiff, p4merge and araxis. If a merge resolution program is not specified, git mergetool will use the configuration variable merge.tool. If the configuration variable merge.tool is not set, git mergetool will pick a suitable default. You can explicitly provide a full path to the tool by setting the configuration variable mergetool.<tool>.path. For example, you can configure the absolute path to kdiff3 by setting mergetool.kdiff3.path. Otherwise, git mergetool assumes the tool is available in PATH. Instead of running one of the known merge tool programs, git mergetool can be customized to run an alternative program by specifying the command line to invoke in a configuration variable mergetool.<tool>.cmd. When git mergetool is invoked with this tool (either through the -t or --tool option or the merge.tool configuration variable) the configured command line will be invoked with $BASE set to the name of a temporary file containing the common base for the merge, if available; $LOCAL set to the name of a temporary file containing the contents of the file on the current branch; $REMOTE set to the name of a temporary file containing the contents of the file to be merged, and $MERGED set to the name of the file to which the merge tool should write the result of the merge resolution. If the custom merge tool correctly indicates the success of a merge resolution with its exit code, then the configuration variable mergetool.<tool>.trustExitCode can be set to true. Otherwise, git mergetool will prompt the user to indicate the success of the resolution after the custom tool has exited. -y, --no-prompt Don't prompt before each invocation of the merge resolution program. --prompt Prompt before each invocation of the merge resolution program. This is the default behaviour; the option is provided to override any configuration settings. AUTHOR
Written by Theodore Y Ts'o <[1]> DOCUMENTATION
Documentation by Theodore Y Ts'o. GIT
Part of the git(1) suite NOTES
1. Git 1.7.1 07/05/2010 GIT-MERGETOOL(1)

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