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Additional to sar command, Linux sysstat package in Debian, [4] RedHat Enterprise Linux and SuSE provides additional reporting tools: : Collect, report, or save system activity information. – Linux User Commands Manual: Collect and store binary data in the system activity daily data file.
For example, on Intel Crystalwell CPUs, executing CPUID with EAX=4 and ECX=4 will cause the processor to return the following size information for its level-4 cache in EBX and ECX: EBX=03C0F03F and ECX=00001FFF - this should be taken to mean that this cache has a cache line size of 64 bytes (EBX[11:0]+1), has 16 cache lines per tag (EBX[21:12 ...
time (Unix) - can be used to determine the run time of a program, separately counting user time vs. system time, and CPU time vs. clock time. [ 1 ] timem (Unix) - can be used to determine the wall-clock time, CPU time, and CPU utilization similar to time (Unix) but supports numerous extensions.
For example, one can interpret a load average of "1.73 0.60 7.98" on a single-CPU system as: During the last minute, the system was overloaded by 73% on average (1.73 runnable processes, so that 0.73 processes had to wait for a turn for a single CPU system on average). During the last 5 minutes, the CPU was idling 40% of the time, on average.
nice is a program found on Unix and Unix-like operating systems such as Linux. It directly maps to a kernel call of the same name. nice is used to invoke a utility or shell script with a particular CPU priority, thus giving the process more or less CPU time than other processes. A niceness of -20 is the lowest niceness, or highest priority.
cgroups (abbreviated from control groups) is a Linux kernel feature that limits, accounts for, and isolates the resource usage (CPU, memory, disk I/O, etc. [1]) of a collection of processes. Engineers at Google started the work on this feature in 2006 under the name "process containers". [ 2 ]
Zillow's top 10 hottest housing markets of 2025. The primary reasons Buffalo was number one again, according to Zillow? Job and wage growth, relative affordability and demand that outweighs supply.
BogoMips (from "bogus" and MIPS) is a crude measurement of CPU speed made by the Linux kernel when it boots to calibrate an internal busy-loop. [1] An often-quoted definition of the term is "the number of million times per second a processor can do absolutely nothing".