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What does ni mean in top?
ni – user nice cpu time (or) % CPU time spent on low priority processes. id – idle cpu time (or) % CPU time spent idle.
What is the nice value?
Nice value — Nice values are user-space values that we can use to control the priority of a process. The nice value range is -20 to +19 where -20 is highest, 0 default and +19 is lowest. To see how these work together let us take a process that takes a lot of processing power continuously.
What is WA in top output?
wa is the time the CPU is waiting for I/O to complete. 87.2%id is the amount of CPU spends in idle, and therefore would be available for other processes. The percentage expressed in wa (IOwait) does not convey idle time on the CPU. It could indeed be idle or it could be being used by another process.
What is soft IRQ?
SoftIrqs allow the critical part of servicing hardware interrupts to be as short as possible; instead of having to process the entire hw interrupt on the spot, the important data is read off the device into RAM or otherwise, and then a SoftIrq is started to finish the work.
What’s the difference between Ni and PRI in Linux?
From the top and htop outputs above, you’ll notice that there is a column called PR and PRI receptively which show the priority of a process. This therefore means that: NI – is the nice value, which is a user-space concept, while. PR or PRI – is the process’s actual priority, as seen by the Linux kernel.
What is the difference between the NI and PR values in the..?
For realtime processes, the kernel priority is the process’s real-time priority, but the PR column will simply print RT. NI is the nice value, which is a user-space concept. PR is the process’s actual priority, as viewed by the Linux kernel.
What are US, Sy, ni, and St?
I listed all of us, sy, ni, etc, because it could help others searching for the same. This information is not in the man pages. hi is the time spent processing hardware interrupts.
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