From: Joshua Hahn
Creates a cgroup with a single nice CPU hog process running.
fork() is called to generate the nice process because un-nicing is
not possible (see man nice(3)). If fork() was not used to generate
the CPU hog, we would run the rest of the cgroup selftest suite as a
nice process
From: Joshua Hahn
Cgroup-level CPU statistics currently include time spent on
user/system processes, but do not include niced CPU time (despite
already being tracked). This patch exposes niced CPU time to the
userspace, allowing users to get a better understanding of their
hardware limits and
ower
non-nice CPU utilization.
Signed-off-by Joshua Hahn
Joshua Hahn (2):
Tracking cgroup-level niced CPU time
Selftests for niced CPU statistics
include/linux/cgroup-defs.h | 1 +
kernel/cgroup/rstat.c | 19 --
tools/testing/selftests/cgrou
I will add
cgroup/rstat to the patch title.
Thank you again!
Joshua
From: Joshua Hahn
Creates a cgroup with a single nice CPU hog process running.
fork() is called to generate the nice process because un-nicing is
not possible (see man nice(3)). If fork() was not used to generate
the CPU hog, we would run the rest of the cgroup selftest suite as a
nice process
From: Joshua Hahn
Cgroup-level CPU statistics currently include time spent on
user/system processes, but do not include niced CPU time (despite
already being tracked). This patch exposes niced CPU time to the
userspace, allowing users to get a better understanding of their
hardware limits and
From: Joshua Hahn
v1 -> v2: Edited commit messages for clarity.
Niced CPU usage is a metric reported in host-level /prot/stat, but is
not reported in cgroup-level statistics in cpu.stat. However, when a
host contains multiple tasks across different workloads, it becomes
difficult to gauge
CPU time to the
userspace, allowing users to get a better understanding of their
hardware limits and can facilitate more informed workload distribution.
Thanks,
Joshua
time, and other tasks are
running nonnice tasks. By including cgroup-level nice statistics, we can get
a clearer picture and avoid overloading a host with too many high prio tasks.
Like you suggested, this information can also help in re-prioritizing
the processes, which may help high prio tasks become executed quicker.
Thanks,
Joshua
From: Joshua Hahn
Creates a cgroup with a single nice CPU hog process running.
fork() is called to generate the nice process because un-nicing is
not possible (see man nice(3)). If fork() was not used to generate
the CPU hog, we would run the rest of the cgroup selftest suite as a
nice process
From: Joshua Hahn
Cgroup-level CPU statistics currently include time spent on
user/system processes, but do not include niced CPU time (despite
already being tracked). This patch exposes niced CPU time to the
userspace, allowing users to get a better understanding of their
hardware limits and
From: Joshua Hahn
Niced CPU usage is a metric reported in host-level /proc/stat, but is
not reported in cgroup-level statistics in cpu.stat. However, when a
host contains multiple tasks across different workloads, it becomes
difficult to gauage how much of the task is being spent on niced
12 matches
Mail list logo
