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 to the
34              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 the re‐
41              quest 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_completed_request(3stap)
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58       ioscheduler_trace.elv_issue_request
59              Fires when a request is
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61               See probe::ioscheduler_trace.elv_issue_request(3stap)
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64       ioscheduler_trace.elv_requeue_request
65              Fires when a request is
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67               See probe::ioscheduler_trace.elv_requeue_request(3stap)
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70       ioscheduler_trace.elv_abort_request
71              Fires when a request is aborted.
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73               See probe::ioscheduler_trace.elv_abort_request(3stap)
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76       ioscheduler_trace.plug
77              Fires when a request queue is plugged;
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79               See probe::ioscheduler_trace.plug(3stap)
80               for details.
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82       ioscheduler_trace.unplug_io
83              Fires when a request queue is unplugged;
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85               See probe::ioscheduler_trace.unplug_io(3stap)
86               for details.
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88       ioscheduler_trace.unplug_timer
89              Fires when unplug timer associated
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91               See probe::ioscheduler_trace.unplug_timer(3stap)
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SEE ALSO

96                     probe::ioscheduler.elv_next_request(3stap),
97       probe::ioscheduler.elv_next_request.return(3stap),
98       probe::ioscheduler.elv_completed_request(3stap),
99       probe::ioscheduler.elv_add_request.kp(3stap),
100       probe::ioscheduler.elv_add_request.tp(3stap),
101       probe::ioscheduler.elv_add_request(3stap),
102       probe::ioscheduler_trace.elv_completed_request(3stap),
103       probe::ioscheduler_trace.elv_issue_request(3stap),
104       probe::ioscheduler_trace.elv_requeue_request(3stap),
105       probe::ioscheduler_trace.elv_abort_request(3stap),
106       probe::ioscheduler_trace.plug(3stap),
107       probe::ioscheduler_trace.unplug_io(3stap),
108       probe::ioscheduler_trace.unplug_timer(3stap),                  stap(1),
109       stapprobes(3stap)
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113SystemTap Tapset Reference         May 2021         TAPSET::IOSCHEDULER(3stap)