filebench | File system and storage benchmark | Performance Testing library
kandi X-RAY | filebench Summary
kandi X-RAY | filebench Summary
Filebench is a file system and storage benchmark that can generate a large variety of workloads. Unlike typical benchmarks it is extremely flexible and allows to specify application’s I/O behavior using its extensive Workload Model Language (WML). Users can either describe desired workloads from scratch or use (with or without modifications) workload personalities shipped with Filebench (e.g., mail-, web-, file-, and database-server workloads). Filebench is equally good for micro- and macro-benchmarking, quick to setup, and relatively easy to use.
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QUESTION
I used perf sched record to record something.
and I got some context switch event from perf sched script
...ANSWER
Answered 2018-Jun-08 at 21:54The characters R/T/S/D
represent various task states.
The character 'R' shows that the task is in TASK_RUNNING State. The character 'S' shows that the task has been put to TASK_INTERRUPTIBLE state. The character 'D' shows that the task has been put to TASK_UNINTERRUPTIBLE state by the scheduler. Finally the character 'T' shows that the task is currently in TASK_STOPPED state. To understand how the task states can be determined from the characters, look up the linux kernel (4.17) source code:-
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