How to early configure Linux kernel to reboot on panic?
You can put “panic=N” on the kernel command line to make the system reboot N seconds after a panic.
linux-kernel
256 colors in console (tty)
Suppose, I have a system without X server. I can only log in from the console. It seems, by default linux console supports only 8 colors:
Do the virtual address spaces of all the processes have the same content in their “Kernel” parts?
The Linux Programming Interface shows the layout of a virtual address space of a process:
System calls supported in running Kernel
Is there a way to get the number of or list of system calls supported by currently running Linux Kernel? So I want to find a way to ‘read’ the syscall table of a running kernel.
How to block drivers built-into Kernel, i.e. drivers who are not a module
I configured and compiled Linux kernel with nouveau driver built-into kernel, i.e. with <*> as opposed to <M> when doing make menuconfig inside Linux kernel source directory.
Why does rename() take longer when fsync() is called first?
In this test, why does rename() take longer when fsync() is called first?
Restrict size of buffer cache in Linux
Is there a way to tell the Linux kernel to only use a certain percentage of memory for the buffer cache? I know /proc/sys/vm/drop_caches can be used to clear the cache temporarily, but is there any permanent setting that prevents it from growing to more than e.g. 50% of main memory?
What does an idle CPU process do?
Looking at the source of strace I found the use of the clone flag CLONE_IDLETASK which is described there as: