My system is Ubuntu, uname -r = 4.15.0-23-generic. I've installed debug symbols for a kernel. My problem is: I am trying to use socket(AF_PACKET, SOCK_DGRAM, 0) for transmision purpose. For...

I've got 2 experimental environment: CentOS 6.8 and Ubuntu 16.04 Both run inside Virtualbox VM. On CentOS I installed yum install kernel-devel kernel-debug On Ubuntu I installed: sudo apt-get ...

Does Systemtap have PPC32 support ? I see it is mentioned it is supported in Intel and PPC64 platforms but there is not much information about PPC32. Also, can SystemTap used to debug customized l...

How do I use ftrace() (or anything else) to trace a specific, user-defined function in the Linux kernel? I'm trying to create and run some microbenchmarks, so I'd like to have the time it takes cer...

I have an application that I want to profile wrt how much time is spent in various activities. Since this application is I/O intensive, I want to get a report that will summarize how much time is s...

OS: GNU/Linux Distro: OpenSuSe 13.1 Arch: x86-64 GDB version: 7.6.50.20130731-cvs Program language: mostly C with minor bits of assembly Imagine that I've got rather big program that sometimes fai...

Does anyone know how to get the memory accesses (pointers) that cause page faults? I'm interested mostly in the major page faults. A bit of background about what I'm trying to achieve. I have an a...

I'd like to test whether particular socket options have been set on an existing socket. Ie, pretty much everything you can see in: #!/usr/bin/env python '''See possible TCP socket options''' imp...