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f59b73b97c
Add bpftrace script to print the distribution of vtime across DSQs. Signed-off-by: Daniel Hodges <hodges.daniel.scott@gmail.com>
31 lines
617 B
Plaintext
Executable File
31 lines
617 B
Plaintext
Executable File
#!/usr/bin/env bpftrace
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// Copyright (c) Meta Platforms, Inc. and affiliates.
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// This software may be used and distributed according to the terms of the
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// GNU General Public License version 2.
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rawtracepoint:sched_wakeup,
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rawtracepoint:sched_wakeup_new,
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{
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$task = (struct task_struct *)arg0;
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if ($1 > 0 && $task->tgid != $1) {
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return;
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}
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if ($task->scx.dsq->id >= 0) {
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@dsq_vtime[$task->scx.dsq->id] = hist($task->scx.dsq_vtime);
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}
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}
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interval:s:1 {
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if ($1 >0) {
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$scx_ops = kaddr("scx_ops");
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$ops = (struct sched_ext_ops*)$scx_ops;
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printf("scheduler: %s\n", $ops->name);
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}
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print(@dsq_vtime);
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}
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