1TAPSET::IOSCHEDULER(3stap)                          TAPSET::IOSCHEDULER(3stap)
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NAME

6       tapset::ioscheduler - systemtap ioscheduler tapset
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DESCRIPTION

10        This family of probe points is used to probe IO scheduler activities.
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14       ioscheduler.elv_next_request
15              Fires when a request is retrieved from the request queue
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17               See probe::ioscheduler.elv_next_request(3stap)
18               for details.
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20       ioscheduler.elv_next_request.return
21              Fires when a request retrieval issues a return signal
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23               See probe::ioscheduler.elv_next_request.return(3stap)
24               for details.
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26       ioscheduler.elv_completed_request
27              Fires when a request is completed
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29               See probe::ioscheduler.elv_completed_request(3stap)
30               for details.
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32       ioscheduler.elv_add_request.kp
33              kprobe  based  probe to indicate that a request was added
34              to the request queue
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36               See probe::ioscheduler.elv_add_request.kp(3stap)
37               for details.
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39       ioscheduler.elv_add_request.tp
40              tracepoint based probe to indicate a request is added  to
41              the request queue.
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43               See probe::ioscheduler.elv_add_request.tp(3stap)
44               for details.
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46       ioscheduler.elv_add_request
47              probe to indicate request is added to the request queue.
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49               See probe::ioscheduler.elv_add_request(3stap)
50               for details.
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52       ioscheduler_trace.elv_completed_request
53              Fires when a request is
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55               See                    probe::ioscheduler_trace.elv_com‐
56              pleted_request(3stap)
57               for details.
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59       ioscheduler_trace.elv_issue_request
60              Fires when a request is
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62               See probe::ioscheduler_trace.elv_issue_request(3stap)
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65       ioscheduler_trace.elv_requeue_request
66              Fires when a request is
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68               See probe::ioscheduler_trace.elv_requeue_request(3stap)
69               for details.
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71       ioscheduler_trace.elv_abort_request
72              Fires when a request is aborted.
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74               See probe::ioscheduler_trace.elv_abort_request(3stap)
75               for details.
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77       ioscheduler_trace.plug
78              Fires when a request queue is plugged;
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80               See probe::ioscheduler_trace.plug(3stap)
81               for details.
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83       ioscheduler_trace.unplug_io
84              Fires when a request queue is unplugged;
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86               See probe::ioscheduler_trace.unplug_io(3stap)
87               for details.
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89       ioscheduler_trace.unplug_timer
90              Fires when unplug timer associated
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92               See probe::ioscheduler_trace.unplug_timer(3stap)
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SEE ALSO

97                 probe::ioscheduler.elv_next_request(3stap),
98       probe::ioscheduler.elv_next_request.return(3stap),
99       probe::ioscheduler.elv_completed_request(3stap),
100       probe::ioscheduler.elv_add_request.kp(3stap),
101       probe::ioscheduler.elv_add_request.tp(3stap),
102       probe::ioscheduler.elv_add_request(3stap),
103       probe::ioscheduler_trace.elv_completed_request(3stap),
104       probe::ioscheduler_trace.elv_issue_request(3stap),
105       probe::ioscheduler_trace.elv_requeue_request(3stap),
106       probe::ioscheduler_trace.elv_abort_request(3stap),
107       probe::ioscheduler_trace.plug(3stap),
108       probe::ioscheduler_trace.unplug_io(3stap),
109       probe::ioscheduler_trace.unplug_timer(3stap),           stap(1),
110       stapprobes(3stap)
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114SystemTap Tapset Reference       November 2019      TAPSET::IOSCHEDULER(3stap)