From: Tejun Heo tj@kernel.org
mainline inclusion from mainline-5.4-rc1 commit b06f2d35c6b14d956f19eeabe1f257caeb66e38e category: feature bugzilla: 38688 CVE: NA
---------------------------
When outputting json:
* Don't truncate numbers.
* Report address of iocg to ease drilling down further.
When outputting table:
* Use math.ceil() for delay_ms so that small delays don't read as 0.
Signed-off-by: Tejun Heo tj@kernel.org Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Yu Kuai yukuai3@huawei.com Reviewed-by: Hou Tao houtao1@huawei.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- tools/cgroup/iocost_monitor.py | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/tools/cgroup/iocost_monitor.py b/tools/cgroup/iocost_monitor.py index 8f6b4ac377bd4..5d8bac603ffa0 100644 --- a/tools/cgroup/iocost_monitor.py +++ b/tools/cgroup/iocost_monitor.py @@ -13,6 +13,7 @@ import sys import re import time import json +import math
import drgn from drgn import container_of @@ -95,7 +96,7 @@ class IocStat:
self.enabled = ioc.enabled.value_() self.running = ioc.running.value_() == IOC_RUNNING - self.period_ms = round(ioc.period_us.value_() / 1_000) + self.period_ms = ioc.period_us.value_() / 1_000 self.period_at = ioc.period_at.value_() / 1_000_000 self.vperiod_at = ioc.period_at_vtime.value_() / VTIME_PER_SEC self.vrate_pct = ioc.vtime_rate.counter.value_() * 100 / VTIME_PER_USEC @@ -147,6 +148,7 @@ class IocgStat: self.inuse = iocg.inuse.value_() self.hwa_pct = iocg.hweight_active.value_() * 100 / HWEIGHT_WHOLE self.hwi_pct = iocg.hweight_inuse.value_() * 100 / HWEIGHT_WHOLE + self.address = iocg.value_()
vdone = iocg.done_vtime.counter.value_() vtime = iocg.vtime.counter.value_() @@ -157,15 +159,15 @@ class IocgStat: else: self.inflight_pct = 0
- self.use_delay = min(blkg.use_delay.counter.value_(), 99) - self.delay_ms = min(round(blkg.delay_nsec.counter.value_() / 1_000_000), 999) + self.use_delay = blkg.use_delay.counter.value_() + self.delay_ms = blkg.delay_nsec.counter.value_() / 1_000_000
usage_idx = iocg.usage_idx.value_() self.usages = [] self.usage = 0 for i in range(NR_USAGE_SLOTS): usage = iocg.usages[(usage_idx + i) % NR_USAGE_SLOTS].value_() - upct = min(usage * 100 / HWEIGHT_WHOLE, 999) + upct = usage * 100 / HWEIGHT_WHOLE self.usages.append(upct) self.usage = max(self.usage, upct)
@@ -181,7 +183,8 @@ class IocgStat: 'inflight_pct' : str(self.inflight_pct), 'use_delay' : str(self.use_delay), 'delay_ms' : str(self.delay_ms), - 'usage_pct' : str(self.usage) } + 'usage_pct' : str(self.usage), + 'address' : str(hex(self.address)) } for i in range(len(self.usages)): out[f'usage_pct_{i}'] = str(self.usages[i]) return out @@ -192,9 +195,10 @@ class IocgStat: f'{self.inuse:5}/{self.active:5} ' \ f'{self.hwi_pct:6.2f}/{self.hwa_pct:6.2f} ' \ f'{self.inflight_pct:6.2f} ' \ - f'{self.use_delay:2}*{self.delay_ms:03} ' + f'{min(self.use_delay, 99):2}*'\ + f'{min(math.ceil(self.delay_ms), 999):03} ' for u in self.usages: - out += f'{round(u):03d}:' + out += f'{min(round(u), 999):03d}:' out = out.rstrip(':') return out