tests/test_io.py

   1 # The MIT License (MIT)
   2 #
   3 # Copyright (C) 2016 - Julien Desfossez <jdesfossez@efficios.com>
   4 #                      Antoine Busque <abusque@efficios.com>
   5 #
   6 # Permission is hereby granted, free of charge, to any person obtaining a copy
   7 # of this software and associated documentation files (the "Software"), to deal
   8 # in the Software without restriction, including without limitation the rights
   9 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 # copies of the Software, and to permit persons to whom the Software is
  11 # furnished to do so, subject to the following conditions:
  12 #
  13 # The above copyright notice and this permission notice shall be included in
  14 # all copies or substantial portions of the Software.
  15 #
  16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22 # SOFTWARE.
  23
  24 from .analysis_test import AnalysisTest
  25
  26
  27 class IoTest(AnalysisTest):
  28     def write_trace(self):
  29         # app (99) is known at statedump
  30         self.trace_writer.write_lttng_statedump_process_state(
  31             1000, 0, 99, 99, 99, 99, 98, 98, 'app', 0, 5, 0, 5, 0)
  32         # app2 (100) unknown at statedump has testfile, FD 3 defined at
  33         # statedump
  34         self.trace_writer.write_lttng_statedump_file_descriptor(
  35             1001, 0, 100, 3, 0, 0, 'testfile')
  36         # app write 10 bytes to FD 4
  37         self.trace_writer.write_sched_switch(1002, 0, 'swapper/0', 0, 'app', 99)
  38         self.trace_writer.write_syscall_write(1004, 0, 1, 4, 0xabcd, 10, 10)
  39         # app2 reads 100 bytes in FD 3
  40         self.trace_writer.write_sched_switch(1006, 0, 'app', 99, 'app2', 100)
  41         self.trace_writer.write_syscall_read(1008, 0, 1, 3, 0xcafe, 100, 100)
  42         # app3 and its FD 3 are completely unknown at statedump, tries to read 100
  43         # bytes from FD 3 but only gets 42
  44         self.trace_writer.write_sched_switch(1010, 0, 'app2', 100, 'app3', 101)
  45         self.trace_writer.write_syscall_read(1012, 0, 1, 3, 0xcafe, 100, 42)
  46         # block write
  47         self.trace_writer.write_block_rq_issue(1015, 0, 264241152, 33, 10, 40, 99, 0, 0, '', 'app')
  48         self.trace_writer.write_block_rq_complete(1016, 0, 264241152, 33, 10, 0, 0, 0, '')
  49         # block read
  50         self.trace_writer.write_block_rq_issue(1017, 0, 8388608, 33, 20, 90, 101, 1, 0, '', 'app3')
  51         self.trace_writer.write_block_rq_complete(1018, 0, 8388608, 33, 20, 0, 1, 0, '')
  52         # net xmit
  53         self.trace_writer.write_net_dev_xmit(1020, 2, 0xff, 32, 100, 'wlan0')
  54         # net receive
  55         self.trace_writer.write_netif_receive_skb(1021, 1, 0xff, 100, 'wlan1')
  56         self.trace_writer.write_netif_receive_skb(1022, 1, 0xff, 200, 'wlan0')
  57         # syscall open
  58         self.trace_writer.write_syscall_open(1023, 0, 1, 'test/open/file', 0, 0, 42)
  59         self.trace_writer.flush()
  60
  61     def test_iousagetop(self):
  62         expected = self.get_expected_output('iousagetop.txt')
  63         result = self.get_cmd_output('lttng-iousagetop')
  64
  65         self.assertMultiLineEqual(result, expected)
  66
  67     def test_iolatencytop(self):
  68         expected = self.get_expected_output('iolatencytop.txt')
  69         result = self.get_cmd_output('lttng-iolatencytop')
  70
  71         self.assertMultiLineEqual(result, expected)