mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 20:05:18 +07:00
0f5f5bcd11
This provides valuable information for tracing performance problems. Since this change alters the interface for the python scripts, also adjust the script generation and the provided scripts. Signed-off-by: Joseph Schuchart <joseph.schuchart@tu-dresden.de> Acked-by: Thomas Ilsche <thomas.ilsche@tu-dresden.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Ilsche <thomas.ilsche@tu-dresden.de> Link: http://lkml.kernel.org/r/53BE7E1B.10503@tu-dresden.de Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
461 lines
12 KiB
Python
461 lines
12 KiB
Python
#!/usr/bin/python
|
|
#
|
|
# Cpu task migration overview toy
|
|
#
|
|
# Copyright (C) 2010 Frederic Weisbecker <fweisbec@gmail.com>
|
|
#
|
|
# perf script event handlers have been generated by perf script -g python
|
|
#
|
|
# This software is distributed under the terms of the GNU General
|
|
# Public License ("GPL") version 2 as published by the Free Software
|
|
# Foundation.
|
|
|
|
|
|
import os
|
|
import sys
|
|
|
|
from collections import defaultdict
|
|
from UserList import UserList
|
|
|
|
sys.path.append(os.environ['PERF_EXEC_PATH'] + \
|
|
'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
|
|
sys.path.append('scripts/python/Perf-Trace-Util/lib/Perf/Trace')
|
|
|
|
from perf_trace_context import *
|
|
from Core import *
|
|
from SchedGui import *
|
|
|
|
|
|
threads = { 0 : "idle"}
|
|
|
|
def thread_name(pid):
|
|
return "%s:%d" % (threads[pid], pid)
|
|
|
|
class RunqueueEventUnknown:
|
|
@staticmethod
|
|
def color():
|
|
return None
|
|
|
|
def __repr__(self):
|
|
return "unknown"
|
|
|
|
class RunqueueEventSleep:
|
|
@staticmethod
|
|
def color():
|
|
return (0, 0, 0xff)
|
|
|
|
def __init__(self, sleeper):
|
|
self.sleeper = sleeper
|
|
|
|
def __repr__(self):
|
|
return "%s gone to sleep" % thread_name(self.sleeper)
|
|
|
|
class RunqueueEventWakeup:
|
|
@staticmethod
|
|
def color():
|
|
return (0xff, 0xff, 0)
|
|
|
|
def __init__(self, wakee):
|
|
self.wakee = wakee
|
|
|
|
def __repr__(self):
|
|
return "%s woke up" % thread_name(self.wakee)
|
|
|
|
class RunqueueEventFork:
|
|
@staticmethod
|
|
def color():
|
|
return (0, 0xff, 0)
|
|
|
|
def __init__(self, child):
|
|
self.child = child
|
|
|
|
def __repr__(self):
|
|
return "new forked task %s" % thread_name(self.child)
|
|
|
|
class RunqueueMigrateIn:
|
|
@staticmethod
|
|
def color():
|
|
return (0, 0xf0, 0xff)
|
|
|
|
def __init__(self, new):
|
|
self.new = new
|
|
|
|
def __repr__(self):
|
|
return "task migrated in %s" % thread_name(self.new)
|
|
|
|
class RunqueueMigrateOut:
|
|
@staticmethod
|
|
def color():
|
|
return (0xff, 0, 0xff)
|
|
|
|
def __init__(self, old):
|
|
self.old = old
|
|
|
|
def __repr__(self):
|
|
return "task migrated out %s" % thread_name(self.old)
|
|
|
|
class RunqueueSnapshot:
|
|
def __init__(self, tasks = [0], event = RunqueueEventUnknown()):
|
|
self.tasks = tuple(tasks)
|
|
self.event = event
|
|
|
|
def sched_switch(self, prev, prev_state, next):
|
|
event = RunqueueEventUnknown()
|
|
|
|
if taskState(prev_state) == "R" and next in self.tasks \
|
|
and prev in self.tasks:
|
|
return self
|
|
|
|
if taskState(prev_state) != "R":
|
|
event = RunqueueEventSleep(prev)
|
|
|
|
next_tasks = list(self.tasks[:])
|
|
if prev in self.tasks:
|
|
if taskState(prev_state) != "R":
|
|
next_tasks.remove(prev)
|
|
elif taskState(prev_state) == "R":
|
|
next_tasks.append(prev)
|
|
|
|
if next not in next_tasks:
|
|
next_tasks.append(next)
|
|
|
|
return RunqueueSnapshot(next_tasks, event)
|
|
|
|
def migrate_out(self, old):
|
|
if old not in self.tasks:
|
|
return self
|
|
next_tasks = [task for task in self.tasks if task != old]
|
|
|
|
return RunqueueSnapshot(next_tasks, RunqueueMigrateOut(old))
|
|
|
|
def __migrate_in(self, new, event):
|
|
if new in self.tasks:
|
|
self.event = event
|
|
return self
|
|
next_tasks = self.tasks[:] + tuple([new])
|
|
|
|
return RunqueueSnapshot(next_tasks, event)
|
|
|
|
def migrate_in(self, new):
|
|
return self.__migrate_in(new, RunqueueMigrateIn(new))
|
|
|
|
def wake_up(self, new):
|
|
return self.__migrate_in(new, RunqueueEventWakeup(new))
|
|
|
|
def wake_up_new(self, new):
|
|
return self.__migrate_in(new, RunqueueEventFork(new))
|
|
|
|
def load(self):
|
|
""" Provide the number of tasks on the runqueue.
|
|
Don't count idle"""
|
|
return len(self.tasks) - 1
|
|
|
|
def __repr__(self):
|
|
ret = self.tasks.__repr__()
|
|
ret += self.origin_tostring()
|
|
|
|
return ret
|
|
|
|
class TimeSlice:
|
|
def __init__(self, start, prev):
|
|
self.start = start
|
|
self.prev = prev
|
|
self.end = start
|
|
# cpus that triggered the event
|
|
self.event_cpus = []
|
|
if prev is not None:
|
|
self.total_load = prev.total_load
|
|
self.rqs = prev.rqs.copy()
|
|
else:
|
|
self.rqs = defaultdict(RunqueueSnapshot)
|
|
self.total_load = 0
|
|
|
|
def __update_total_load(self, old_rq, new_rq):
|
|
diff = new_rq.load() - old_rq.load()
|
|
self.total_load += diff
|
|
|
|
def sched_switch(self, ts_list, prev, prev_state, next, cpu):
|
|
old_rq = self.prev.rqs[cpu]
|
|
new_rq = old_rq.sched_switch(prev, prev_state, next)
|
|
|
|
if old_rq is new_rq:
|
|
return
|
|
|
|
self.rqs[cpu] = new_rq
|
|
self.__update_total_load(old_rq, new_rq)
|
|
ts_list.append(self)
|
|
self.event_cpus = [cpu]
|
|
|
|
def migrate(self, ts_list, new, old_cpu, new_cpu):
|
|
if old_cpu == new_cpu:
|
|
return
|
|
old_rq = self.prev.rqs[old_cpu]
|
|
out_rq = old_rq.migrate_out(new)
|
|
self.rqs[old_cpu] = out_rq
|
|
self.__update_total_load(old_rq, out_rq)
|
|
|
|
new_rq = self.prev.rqs[new_cpu]
|
|
in_rq = new_rq.migrate_in(new)
|
|
self.rqs[new_cpu] = in_rq
|
|
self.__update_total_load(new_rq, in_rq)
|
|
|
|
ts_list.append(self)
|
|
|
|
if old_rq is not out_rq:
|
|
self.event_cpus.append(old_cpu)
|
|
self.event_cpus.append(new_cpu)
|
|
|
|
def wake_up(self, ts_list, pid, cpu, fork):
|
|
old_rq = self.prev.rqs[cpu]
|
|
if fork:
|
|
new_rq = old_rq.wake_up_new(pid)
|
|
else:
|
|
new_rq = old_rq.wake_up(pid)
|
|
|
|
if new_rq is old_rq:
|
|
return
|
|
self.rqs[cpu] = new_rq
|
|
self.__update_total_load(old_rq, new_rq)
|
|
ts_list.append(self)
|
|
self.event_cpus = [cpu]
|
|
|
|
def next(self, t):
|
|
self.end = t
|
|
return TimeSlice(t, self)
|
|
|
|
class TimeSliceList(UserList):
|
|
def __init__(self, arg = []):
|
|
self.data = arg
|
|
|
|
def get_time_slice(self, ts):
|
|
if len(self.data) == 0:
|
|
slice = TimeSlice(ts, TimeSlice(-1, None))
|
|
else:
|
|
slice = self.data[-1].next(ts)
|
|
return slice
|
|
|
|
def find_time_slice(self, ts):
|
|
start = 0
|
|
end = len(self.data)
|
|
found = -1
|
|
searching = True
|
|
while searching:
|
|
if start == end or start == end - 1:
|
|
searching = False
|
|
|
|
i = (end + start) / 2
|
|
if self.data[i].start <= ts and self.data[i].end >= ts:
|
|
found = i
|
|
end = i
|
|
continue
|
|
|
|
if self.data[i].end < ts:
|
|
start = i
|
|
|
|
elif self.data[i].start > ts:
|
|
end = i
|
|
|
|
return found
|
|
|
|
def set_root_win(self, win):
|
|
self.root_win = win
|
|
|
|
def mouse_down(self, cpu, t):
|
|
idx = self.find_time_slice(t)
|
|
if idx == -1:
|
|
return
|
|
|
|
ts = self[idx]
|
|
rq = ts.rqs[cpu]
|
|
raw = "CPU: %d\n" % cpu
|
|
raw += "Last event : %s\n" % rq.event.__repr__()
|
|
raw += "Timestamp : %d.%06d\n" % (ts.start / (10 ** 9), (ts.start % (10 ** 9)) / 1000)
|
|
raw += "Duration : %6d us\n" % ((ts.end - ts.start) / (10 ** 6))
|
|
raw += "Load = %d\n" % rq.load()
|
|
for t in rq.tasks:
|
|
raw += "%s \n" % thread_name(t)
|
|
|
|
self.root_win.update_summary(raw)
|
|
|
|
def update_rectangle_cpu(self, slice, cpu):
|
|
rq = slice.rqs[cpu]
|
|
|
|
if slice.total_load != 0:
|
|
load_rate = rq.load() / float(slice.total_load)
|
|
else:
|
|
load_rate = 0
|
|
|
|
red_power = int(0xff - (0xff * load_rate))
|
|
color = (0xff, red_power, red_power)
|
|
|
|
top_color = None
|
|
|
|
if cpu in slice.event_cpus:
|
|
top_color = rq.event.color()
|
|
|
|
self.root_win.paint_rectangle_zone(cpu, color, top_color, slice.start, slice.end)
|
|
|
|
def fill_zone(self, start, end):
|
|
i = self.find_time_slice(start)
|
|
if i == -1:
|
|
return
|
|
|
|
for i in xrange(i, len(self.data)):
|
|
timeslice = self.data[i]
|
|
if timeslice.start > end:
|
|
return
|
|
|
|
for cpu in timeslice.rqs:
|
|
self.update_rectangle_cpu(timeslice, cpu)
|
|
|
|
def interval(self):
|
|
if len(self.data) == 0:
|
|
return (0, 0)
|
|
|
|
return (self.data[0].start, self.data[-1].end)
|
|
|
|
def nr_rectangles(self):
|
|
last_ts = self.data[-1]
|
|
max_cpu = 0
|
|
for cpu in last_ts.rqs:
|
|
if cpu > max_cpu:
|
|
max_cpu = cpu
|
|
return max_cpu
|
|
|
|
|
|
class SchedEventProxy:
|
|
def __init__(self):
|
|
self.current_tsk = defaultdict(lambda : -1)
|
|
self.timeslices = TimeSliceList()
|
|
|
|
def sched_switch(self, headers, prev_comm, prev_pid, prev_prio, prev_state,
|
|
next_comm, next_pid, next_prio):
|
|
""" Ensure the task we sched out this cpu is really the one
|
|
we logged. Otherwise we may have missed traces """
|
|
|
|
on_cpu_task = self.current_tsk[headers.cpu]
|
|
|
|
if on_cpu_task != -1 and on_cpu_task != prev_pid:
|
|
print "Sched switch event rejected ts: %s cpu: %d prev: %s(%d) next: %s(%d)" % \
|
|
(headers.ts_format(), headers.cpu, prev_comm, prev_pid, next_comm, next_pid)
|
|
|
|
threads[prev_pid] = prev_comm
|
|
threads[next_pid] = next_comm
|
|
self.current_tsk[headers.cpu] = next_pid
|
|
|
|
ts = self.timeslices.get_time_slice(headers.ts())
|
|
ts.sched_switch(self.timeslices, prev_pid, prev_state, next_pid, headers.cpu)
|
|
|
|
def migrate(self, headers, pid, prio, orig_cpu, dest_cpu):
|
|
ts = self.timeslices.get_time_slice(headers.ts())
|
|
ts.migrate(self.timeslices, pid, orig_cpu, dest_cpu)
|
|
|
|
def wake_up(self, headers, comm, pid, success, target_cpu, fork):
|
|
if success == 0:
|
|
return
|
|
ts = self.timeslices.get_time_slice(headers.ts())
|
|
ts.wake_up(self.timeslices, pid, target_cpu, fork)
|
|
|
|
|
|
def trace_begin():
|
|
global parser
|
|
parser = SchedEventProxy()
|
|
|
|
def trace_end():
|
|
app = wx.App(False)
|
|
timeslices = parser.timeslices
|
|
frame = RootFrame(timeslices, "Migration")
|
|
app.MainLoop()
|
|
|
|
def sched__sched_stat_runtime(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
common_callchain, comm, pid, runtime, vruntime):
|
|
pass
|
|
|
|
def sched__sched_stat_iowait(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
common_callchain, comm, pid, delay):
|
|
pass
|
|
|
|
def sched__sched_stat_sleep(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
common_callchain, comm, pid, delay):
|
|
pass
|
|
|
|
def sched__sched_stat_wait(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
common_callchain, comm, pid, delay):
|
|
pass
|
|
|
|
def sched__sched_process_fork(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
common_callchain, parent_comm, parent_pid, child_comm, child_pid):
|
|
pass
|
|
|
|
def sched__sched_process_wait(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
common_callchain, comm, pid, prio):
|
|
pass
|
|
|
|
def sched__sched_process_exit(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
common_callchain, comm, pid, prio):
|
|
pass
|
|
|
|
def sched__sched_process_free(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
common_callchain, comm, pid, prio):
|
|
pass
|
|
|
|
def sched__sched_migrate_task(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
common_callchain, comm, pid, prio, orig_cpu,
|
|
dest_cpu):
|
|
headers = EventHeaders(common_cpu, common_secs, common_nsecs,
|
|
common_pid, common_comm, common_callchain)
|
|
parser.migrate(headers, pid, prio, orig_cpu, dest_cpu)
|
|
|
|
def sched__sched_switch(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm, common_callchain,
|
|
prev_comm, prev_pid, prev_prio, prev_state,
|
|
next_comm, next_pid, next_prio):
|
|
|
|
headers = EventHeaders(common_cpu, common_secs, common_nsecs,
|
|
common_pid, common_comm, common_callchain)
|
|
parser.sched_switch(headers, prev_comm, prev_pid, prev_prio, prev_state,
|
|
next_comm, next_pid, next_prio)
|
|
|
|
def sched__sched_wakeup_new(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
common_callchain, comm, pid, prio, success,
|
|
target_cpu):
|
|
headers = EventHeaders(common_cpu, common_secs, common_nsecs,
|
|
common_pid, common_comm, common_callchain)
|
|
parser.wake_up(headers, comm, pid, success, target_cpu, 1)
|
|
|
|
def sched__sched_wakeup(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
common_callchain, comm, pid, prio, success,
|
|
target_cpu):
|
|
headers = EventHeaders(common_cpu, common_secs, common_nsecs,
|
|
common_pid, common_comm, common_callchain)
|
|
parser.wake_up(headers, comm, pid, success, target_cpu, 0)
|
|
|
|
def sched__sched_wait_task(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
common_callchain, comm, pid, prio):
|
|
pass
|
|
|
|
def sched__sched_kthread_stop_ret(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
common_callchain, ret):
|
|
pass
|
|
|
|
def sched__sched_kthread_stop(event_name, context, common_cpu,
|
|
common_secs, common_nsecs, common_pid, common_comm,
|
|
common_callchain, comm, pid):
|
|
pass
|
|
|
|
def trace_unhandled(event_name, context, event_fields_dict):
|
|
pass
|