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blk-iocost: update iocost_monitor.py 

iocost went through significant internal changes. Update iocost_monitor.py
accordingly.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Tejun Heo 2020-09-01 14:52:57 -04:00 committed by Jens Axboe
parent f0bf84a5df
commit a7863b3423
1 changed files with 19 additions and 35 deletions
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54
tools/cgroup/iocost_monitor.py
View File

@ -45,8 +45,7 @@ except:
err('The kernel does not have iocost enabled')
IOC_RUNNING = prog['IOC_RUNNING'].value_()
NR_USAGE_SLOTS = prog['NR_USAGE_SLOTS'].value_()
HWEIGHT_WHOLE = prog['HWEIGHT_WHOLE'].value_()
WEIGHT_ONE = prog['WEIGHT_ONE'].value_()
VTIME_PER_SEC = prog['VTIME_PER_SEC'].value_()
VTIME_PER_USEC = prog['VTIME_PER_USEC'].value_()
AUTOP_SSD_FAST = prog['AUTOP_SSD_FAST'].value_()
@ -100,7 +99,7 @@ class IocStat:
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
self.vrate_pct = ioc.vtime_base_rate.value_() * 100 / VTIME_PER_USEC
self.busy_level = ioc.busy_level.value_()
self.autop_idx = ioc.autop_idx.value_()
self.user_cost_model = ioc.user_cost_model.value_()
@ -136,7 +135,7 @@ class IocStat:
def table_header_str(self):
return f'{"":25} active {"weight":>9} {"hweight%":>13} {"inflt%":>6} ' \
f'{"dbt":>3} {"delay":>6} {"usages%"}'
f'{"debt":>7} {"delay":>7} {"usage%"}'
class IocgStat:
def __init__(self, iocg):
@ -144,11 +143,11 @@ class IocgStat:
blkg = iocg.pd.blkg
self.is_active = not list_empty(iocg.active_list.address_of_())
self.weight = iocg.weight.value_()
self.active = iocg.active.value_()
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.weight = iocg.weight.value_() / WEIGHT_ONE
self.active = iocg.active.value_() / WEIGHT_ONE
self.inuse = iocg.inuse.value_() / WEIGHT_ONE
self.hwa_pct = iocg.hweight_active.value_() * 100 / WEIGHT_ONE
self.hwi_pct = iocg.hweight_inuse.value_() * 100 / WEIGHT_ONE
self.address = iocg.value_()
vdone = iocg.done_vtime.counter.value_()
@ -160,23 +159,13 @@ class IocgStat:
else:
self.inflight_pct = 0
# vdebt used to be an atomic64_t and is now u64, support both
try:
self.debt_ms = iocg.abs_vdebt.counter.value_() / VTIME_PER_USEC / 1000
except:
self.debt_ms = iocg.abs_vdebt.value_() / VTIME_PER_USEC / 1000
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 + 1 + i) % NR_USAGE_SLOTS].value_()
upct = usage * 100 / HWEIGHT_WHOLE
self.usages.append(upct)
self.usage = max(self.usage, upct)
self.usage = (100 * iocg.usage_delta_us.value_() /
ioc.period_us.value_()) if self.active else 0
self.debt_ms = iocg.abs_vdebt.value_() / VTIME_PER_USEC / 1000
if blkg.use_delay.counter.value_() != 0:
self.delay_ms = blkg.delay_nsec.counter.value_() / 1_000_000
else:
self.delay_ms = 0
def dict(self, now, path):
out = { 'cgroup' : path,
@ -189,25 +178,20 @@ class IocgStat:
'hweight_inuse_pct' : self.hwi_pct,
'inflight_pct' : self.inflight_pct,
'debt_ms' : self.debt_ms,
'use_delay' : self.use_delay,
'delay_ms' : self.delay_ms,
'usage_pct' : self.usage,
'address' : self.address }
for i in range(len(self.usages)):
out[f'usage_pct_{i}'] = str(self.usages[i])
return out
def table_row_str(self, path):
out = f'{path[-28:]:28} ' \
f'{"*" if self.is_active else " "} ' \
f'{self.inuse:5}/{self.active:5} ' \
f'{round(self.inuse):5}/{round(self.active):5} ' \
f'{self.hwi_pct:6.2f}/{self.hwa_pct:6.2f} ' \
f'{self.inflight_pct:6.2f} ' \
f'{min(math.ceil(self.debt_ms), 999):3} ' \
f'{min(self.use_delay, 99):2}*'\
f'{min(math.ceil(self.delay_ms), 999):03} '
for u in self.usages:
out += f'{min(round(u), 999):03d}:'
f'{self.debt_ms:7.2f} ' \
f'{self.delay_ms:7.2f} '\
f'{min(self.usage, 999):6.2f}'
out = out.rstrip(':')
return out