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Diffstat (limited to 'init/Kconfig')
| -rw-r--r-- | init/Kconfig | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig index 317d5cc..a4112e9 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -490,6 +490,25 @@ config TASK_IO_ACCOUNTING Say N if unsure. +config PSI + bool "Pressure stall information tracking" + help + Collect metrics that indicate how overcommitted the CPU, memory, + and IO capacity are in the system. + + If you say Y here, the kernel will create /proc/pressure/ with the + pressure statistics files cpu, memory, and io. These will indicate + the share of walltime in which some or all tasks in the system are + delayed due to contention of the respective resource. + + In kernels with cgroup support, cgroups (cgroup2 only) will + have cpu.pressure, memory.pressure, and io.pressure files, + which aggregate pressure stalls for the grouped tasks only. + + For more details see Documentation/accounting/psi.txt. + + Say N if unsure. + endmenu # "CPU/Task time and stats accounting" config CPU_ISOLATION |
