Commit 1bf6ece5 authored Jul 30, 2020 by Chengming Zhou Committed by Jens Axboe Jul 30, 2020

iocost_monitor: start from the oldest usage index



iocg usage_idx is the latest usage index, we should start from the
oldest usage index to show the consecutive NR_USAGE_SLOTS usages.

Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent d9012a59

tools/cgroup/iocost_monitor.py

+1 −1

Original line number	Diff line number	Diff line
		@@ -173,7 +173,7 @@ class IocgStat:
		self.usages = []
		self.usage = 0
		for i in range(NR_USAGE_SLOTS):
		usage = iocg.usages[(usage_idx + i) % NR_USAGE_SLOTS].value_()
		usage = iocg.usages[(usage_idx + 1 + i) % NR_USAGE_SLOTS].value_()
		upct = usage * 100 / HWEIGHT_WHOLE
		self.usages.append(upct)
		self.usage = max(self.usage, upct)

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