diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-13 12:12:44 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-13 12:12:44 -0700 |
commit | 3ad11d7ac8872b1c8da54494721fad8907ee41f7 (patch) | |
tree | 439d7cb75466978be936250c65a27ff05e82d9bc /tools/cgroup/iocost_monitor.py | |
parent | 857d64485e7c920364688a8a6dd0ffe5774327b6 (diff) | |
parent | 8858e8d98d5457ba23bcd0d99ce23e272b8b09a1 (diff) |
Merge tag 'block-5.10-2020-10-12' of git://git.kernel.dk/linux-block
Pull block updates from Jens Axboe:
- Series of merge handling cleanups (Baolin, Christoph)
- Series of blk-throttle fixes and cleanups (Baolin)
- Series cleaning up BDI, seperating the block device from the
backing_dev_info (Christoph)
- Removal of bdget() as a generic API (Christoph)
- Removal of blkdev_get() as a generic API (Christoph)
- Cleanup of is-partition checks (Christoph)
- Series reworking disk revalidation (Christoph)
- Series cleaning up bio flags (Christoph)
- bio crypt fixes (Eric)
- IO stats inflight tweak (Gabriel)
- blk-mq tags fixes (Hannes)
- Buffer invalidation fixes (Jan)
- Allow soft limits for zone append (Johannes)
- Shared tag set improvements (John, Kashyap)
- Allow IOPRIO_CLASS_RT for CAP_SYS_NICE (Khazhismel)
- DM no-wait support (Mike, Konstantin)
- Request allocation improvements (Ming)
- Allow md/dm/bcache to use IO stat helpers (Song)
- Series improving blk-iocost (Tejun)
- Various cleanups (Geert, Damien, Danny, Julia, Tetsuo, Tian, Wang,
Xianting, Yang, Yufen, yangerkun)
* tag 'block-5.10-2020-10-12' of git://git.kernel.dk/linux-block: (191 commits)
block: fix uapi blkzoned.h comments
blk-mq: move cancel of hctx->run_work to the front of blk_exit_queue
blk-mq: get rid of the dead flush handle code path
block: get rid of unnecessary local variable
block: fix comment and add lockdep assert
blk-mq: use helper function to test hw stopped
block: use helper function to test queue register
block: remove redundant mq check
block: invoke blk_mq_exit_sched no matter whether have .exit_sched
percpu_ref: don't refer to ref->data if it isn't allocated
block: ratelimit handle_bad_sector() message
blk-throttle: Re-use the throtl_set_slice_end()
blk-throttle: Open code __throtl_de/enqueue_tg()
blk-throttle: Move service tree validation out of the throtl_rb_first()
blk-throttle: Move the list operation after list validation
blk-throttle: Fix IO hang for a corner case
blk-throttle: Avoid tracking latency if low limit is invalid
blk-throttle: Avoid getting the current time if tg->last_finish_time is 0
blk-throttle: Remove a meaningless parameter for throtl_downgrade_state()
block: Remove redundant 'return' statement
...
Diffstat (limited to 'tools/cgroup/iocost_monitor.py')
-rw-r--r-- | tools/cgroup/iocost_monitor.py | 54 |
1 files 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 @@ 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 |