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It's been instructive for me to do things like pick a feature I'd like to have (like Linux vmstat's display of the current run queue), then pull ideas from a few scripts together to get even more insight than I was looking for. To start, try just tweaking existing scripts to slightly change the output or calculations. It's pretty straightforward to write your own scripts from scratch, using other D scripts for inspiration. $ sudo dtrace -qn 'syscall::write:entry, syscall::sendto:entry /pid = $target/ ' One of my most common strace workflows is to take a running process (like a web server), and trace the open system calls it sends to figure out which files it's opening: But there's a fancy built-in DTrace script (wrapped in a shell script) called dtruss that lets you do the most common things without even learning the D programing language (no, not that one either-that's unrelated). I've found I can emulate most strace behaviors I want with DTrace, if I'm willing to put in the time. īelow are a few nice tricks you can do with DTrace to impress your coworkers, and also to get better insights into what your system is really doing.
Is there a queue emulator alternative for a powerpc mac windows#
Sorry Linux and Windows users-this post probably isn't the one you're looking for. But I've got good news for you: DTrace can do magic like strace, and even more! And it comes with OS X ( /usr/bin/dtrace), so you can get started right away (though you'll have a few steps to go through first if you've upgraded to El Capitan ). If you're running OS X on your development machine, you might assume you're out of luck: there's no strace on OS X. Wondering what configuration files the framework looks for? Want to know why the remote connection is hung up? strace can help. It lets you see exactly what system calls are being made by your running application.