midom

#!/usr/bin/env bcc-py
#
# topwaits      Show longest off-cpu waits per-stack
#
# Copyright 2019 Facebook, Inc.
# Copyright 2016 Netflix, Inc.
# Licensed under the Apache License, Version 2.0 (the "License")
#
# 13-Jan-2016	Brendan Gregg	Wrote offcpu profiler
# 27-Nov-2019   Domas Mituzas   Gutted most of profiling part and left stall detector

midom

class MidpointLruCache:
    def __init__(self, size, oldpercentage):
        self.size = size
        self.oldsize = size * oldpercentage / 100
        self.youngsize = size * (100 - oldpercentage) / 100

        self.youngitems = collections.OrderedDict()
        self.olditems = collections.OrderedDict()

    def __call__(self, func):

midom

Events: 658K cycles                                                                                                                                                                                                                                                                         
-  58.75%      mysqlbinlog  [kernel.kallsyms]                            [k] _raw_spin_lock                                                                                                                                                                                                ◆
   - _raw_spin_lock                                                                                                                                                                                                                                                                        ▒
      - 49.41% dput