Top Tweets for #SystemTap
I recently added support for hardware data watchpoint probes for user-space processes to the open-source #SystemTap, which allows defining such dynamic probes in dynamic tracing scripts and performing custom actions (such as statistical analysis) when the target application reads or writes (or only writes) a certain memory area. I have submitted this patch to the SystemTap official Git repository, which will be included in the next release. We also ported this patch to the Stap+ backend of the @OpenResty XRay product, which can be used later to implement some interesting advanced analyzers.
The following figure shows the corresponding Stap script test case, demonstrating its simplest usage. The variable `$^ADDR_a` in the test case will be automatically replaced by the test bench with the global variable "a"'s relative address in the target C program. This test case uses the Test::Base test bench test data description notation, which should be self-explanatory. It is worth mentioning that the official test cases of SystemTap are expressed in Expect/Tcl language, which is much more disgusting than my Test::Base description here, so I wrote a Perl script that automatically converts the test cases expressed in Test::Base into Tcl code for the SystemTap test suite, saving me a lot of trouble. Writing programs that write programs is one of the favorite tricks of experienced programmers.
Get an introduction to #ISystemTap, a #Jupyter kernel for #Linux operating systems that help you write and run #SystemTap scripts.
https://t.co/YRAaqlnc7e
Investigate the cause of an error code using #SystemTap with the whythefail.stp script. https://t.co/P8NdeEWm9u
Identify anomalous behavior in the #Linux kernel or userspace applications, down to the level of particular lines of code, using #SystemTap. https://t.co/KeGpDZIf6b
Add instrumentations to #Linux systems to better understand kernel and application behavior with #SystemTap. https://t.co/nOQHUQPggP
Add instrumentations to #Linux systems to better understand kernel and application behavior with #SystemTap. https://t.co/nOQHUQPggP
Identify anomalous behavior in the #Linux kernel or userspace applications, down to the level of particular lines of code, using #SystemTap. https://t.co/KeGpDZqEeD
Translate physical memory addresses into relativized addresses used in virtual memory, and once this is complete, use a #SystemTap script to create a file that can be interpreted by gprof. https://t.co/u6RePebgII
Translate physical memory addresses into relativized addresses used in virtual memory, and once this is complete, use a #SystemTap script to create a file that can be interpreted by gprof. https://t.co/u6RePebgII
The latest release of #SystemTap 4.5.0 will appear in @RedHat Enterprise #Linux 9.0, featuring context variable access, aliasing, and the Berkeley Packet Filter back-end. #RHEL https://t.co/JTA1AFR7Qg
The latest release of #SystemTap 4.5.0 will appear in @RedHat Enterprise #Linux 9.0, featuring context variable access, aliasing, and the Berkeley Packet Filter back-end. https://t.co/ilYhudHWgm
Inject print statements into running programs, and inspect or even modify data structures with #SystemTap. https://t.co/35CJSrqKer
Store, parse, and analyze your test results with the toolkit, #Bunsen for #SystemTap.
https://t.co/BwsjzMoAhb
Walk through some of the steps implemented in the automated infrastructure to test the #SystemTap project and to collect and analyze the test results.
https://t.co/GVvrlznYdx
Uncovering a 24-year old Linux kernel bug: https://t.co/sd4Xeiny0V #linux #network #sysops #systemtap
Possible issues with #debugging and inspecting compiler-optimized binaries. #GCC #GDB #SystemTap #DWARFdebug https://t.co/S0jo24dC9Z
openresty-systemtap-toolkit - Real-time analysis and diagnostics tools for #OpenResty (including #NGINX, LuaJIT, ngx_lua, and more) based on #SystemTap https://t.co/kKZw0gXcba
Test #golang runtime using #SystemTap. Temporarily modify a running program without having to change the source and recompile. https://t.co/JkmcUZxACP
#OEL 7.6 rocks as there are corresponding kernel-uek-debuginfo packages available (needed for #SystemTap). No "rpmbuild --rebuild" anymore 🤓
Most Popular Users
Elon Musk 
@elonmusk
241.7M followers
Barack Obama
@barackobama
119M followers
Cristiano Ronaldo
@cristiano
114.4M followers
Donald J. Trump
@realdonaldtrump
111.9M followers
Narendra Modi
@narendramodi
107.2M followers
Rihanna
@rihanna
98.7M followers
NASA
@nasa
92.4M followers
Justin Bieber
@justinbieber
91.8M followers
KATY PERRY
@katyperry
90M followers
Taylor Swift
@taylorswift13
83.9M followers
Lady Gaga
@ladygaga
75.4M followers
Virat Kohli
@imvkohli
73.4M followers
Kim Kardashian
@kimkardashian
70.9M followers
YouTube
@youtube
68.8M followers
Neymar Jr
@neymarjr
66.4M followers
Bill Gates
@billgates
65.2M followers
Selena Gomez
@selenagomez
63.1M followers
The Ellen Show
@theellenshow
62.3M followers
CNN
@cnn
61.8M followers
X
@x
60.7M followers