The core engine providing runtime insights to the Sysdig platform
The core engine providing runtime insights to the Sysdig platform
Often times, the production system network is inaccessible from the local development environment. If issues are encountered in production systems, it is impossible to use IDEs to debug the application remotely. More importantly, debugging in production environment is unacceptable, as it will suspend all the threads, resulting in the suspension of business services. Developers could always try to
At Fosdem we had a talk on dtrace for linux in the Debugging Tools devroom. Not explicitly mentioned in that talk, but certainly the most exciting thing, is that Oracle is doing a proper linux kernel port: commit e1744f50ee9bc1978d41db7cc93bcf30687853e6 Author: Tomas Jedlicka <tomas.jedlicka@oracle.com> Date: Tue Aug 1 09:15:44 2017 -0400 dtrace: Integrate DTrace Modules into kernel proper This ch
Because the debugging work depends on CPU architecture and OS heavily, and I test memleax only on several programs, and it is not used widely by now. So there must be bugs. Some known bugs for debugging multi-thread program, #38 and #39. Besides, I write a new tool libleak, which works by hooking memory functions by LD_PRELOAD. It's much simpler and has much less impact on performance. So I am not
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debugCSS: (X)HTML debugging tool built with CSSdebugCSS is meant to be loaded on an existing page to highlight potentially broken, malformed or legacy (X)HTML. Not all "errors" are created equally, so they are color coded to highlight severity. Green is "probably not a big problem", yellow is "worth looking at" and red is "you really should fix this." Click and drag the link below to your bookmark
Something that often, uh... bugs[1] Go developers is the lack of a proper debugger. Sure, builds are ridiculously fast and easy, and println(hex.Dump(b)) is your friend, but sometimes it would be nice to just set a breakpoint and step through that endless if chain or print a bunch of values without recompiling ten times. CC BY 2.0 image by Carl Milner You could try to use some dirty gdb hacks that
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#!/usr/bin/env perl use strict; use warnings; use Getopt::Long qw(:config posix_default no_ignore_case no_ignore_case_always permute); use Pod::Usage; use Carp; my $PROG = substr($0, rindex($0, '/')+1); my $Debug = 0; sub dprint (@) { return unless $Debug; my @m = @_; chomp @m; print STDERR @m,"\n"; } MAIN: { my $target_pid; my $mode; GetOptions( 'pid|p=i' => \$target_pid, 'mode|m=s' => \$mode, 'd
Since we donât have any nice NMT (Native Memory Tracking) MBean in HotSpot (yet), and therefore not in the JMC console, I thought Iâd show how it can be done using command line arguments and JCMD. Please note that youâll get a 5-10% performance hit if you enable this. Step 1 â Enabling NMT This is done by using the following command line: -XX:NativeMemoryTracking=[off|summary|detail] Where the dif
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