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Kdump replaced the deprecated Linux Kernel Crash Dumps (LKCD) tool, which also wrote the contents of memory upon a crash. [11] Kdump presents a more efficient, scalable utility than LKCD. [12] kdump functionality, together with kexec, was merged into the Linux kernel mainline in kernel version 2.6.13, which was released on August 29, 2005. [13]
The kerneloops software can collect and submit kernel oopses to a repository such as the www.kerneloops.org website, [7] which provides statistics and public access to reported oopses. A simplified crash screen was introduced in Linux 6.10, similar to the Blue Screen of Death on Windows. [8]
After recompiling a kernel binary image from source code, a kernel panic while booting the resulting kernel is a common problem if the kernel was not correctly configured, compiled or installed. [8] Add-on hardware or malfunctioning RAM could also be sources of fatal kernel errors during start up, due to incompatibility with the OS or a missing ...
This article documents the version history of the Linux kernel.. Each major version – identified by the first two numbers of a release version – is designated one of the following levels of support:
The overhead was measured to be 0.28% according to KAISER's original authors; [6] a Linux developer measured it to be roughly 5% for most workloads and up to 30% in some cases, even with the PCID optimization; [5] for database engine PostgreSQL the impact on read-only tests on an Intel Skylake processor was 7–17% (or 16–23% without PCID ...
rasdaemon [8] is a RAS (reliability, availability and serviceability) logging tool for Linux. It records memory errors, using the EDAC tracing events. EDAC is a Linux kernel subsystem that handles detection of ECC errors from memory controllers for most chipsets on i386 and x86_64 architectures. EDAC drivers for other architectures like arm ...
There are five types of kernel-mode dumps: [18] Complete memory dump – contains full physical memory for the target system. Kernel memory dump – contains all the memory in use by the kernel at the time of the crash. Small memory dump – contains various info such as the stop code, parameters, list of loaded device drivers, etc.
The operating system delays loading parts of the program from disk until the program attempts to use it and the page fault is generated. If the page is not loaded in memory at the time of the fault, then it is called a major or hard page fault. The page fault handler in the OS needs to find a free location: either a free page in memory, or a ...