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Message-Id: <20200901185257.645114-28-tj@kernel.org>
Date: Tue, 1 Sep 2020 14:52:57 -0400
From: Tejun Heo <tj@...nel.org>
To: axboe@...nel.dk
Cc: linux-block@...r.kernel.org, cgroups@...r.kernel.org,
linux-kernel@...r.kernel.org, kernel-team@...com, newella@...com,
Tejun Heo <tj@...nel.org>
Subject: [PATCH 27/27] blk-iocost: update iocost_monitor.py
iocost went through significant internal changes. Update iocost_monitor.py
accordingly.
Signed-off-by: Tejun Heo <tj@...nel.org>
---
tools/cgroup/iocost_monitor.py | 54 ++++++++++++----------------------
1 file changed, 19 insertions(+), 35 deletions(-)
diff --git a/tools/cgroup/iocost_monitor.py b/tools/cgroup/iocost_monitor.py
index f4699f9b46ba..c4ff907c078b 100644
--- a/tools/cgroup/iocost_monitor.py
+++ b/tools/cgroup/iocost_monitor.py
@@ -45,8 +45,7 @@ args = parser.parse_args()
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 @@ autop_names = {
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 @@ autop_names = {
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 @@ autop_names = {
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 @@ autop_names = {
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 @@ autop_names = {
'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
--
2.26.2
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