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task_switch.py

#!/usr/bin/python # Copyright (c) PLUMgrid, Inc. # Licensed under the Apache License, Version 2.0 (the "License") from bcc import BPF from time import sleep b = BPF(src_file="task_switch.c") b.attach_kprobe(event_re=r'^finish_task_switch$|^finish_task_switch.isra.d$', fn_name="count_sched") # generate many schedule events for i in range(0, 100): sleep(0.01) for k, v in b["stats"].items(): print("task_switch[%5d->%5d]=%u" % (k.prev_pid, k.curr_pid, v.value))

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docroot: /var/www/469ed2f6-4d4b-4a8a-9f5e-ee4ef04d3bc8/public_html

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curdir: /usr/share/doc/bpfcc-tools/examples/tracing

	.		4096
	..		4096
X	CMakeLists.txt		276
X	biolatpcts.py		3312
X	biolatpcts_example.txt		650
X	bitehist.py		1397
X	bitehist_example.txt		1208
X	dddos.py		3818
X	dddos_example.txt		2112
X	disksnoop.py		1947
X	disksnoop_example.txt		1587
X	hello_fields.py		679
X	hello_perf_output.py		1270
X	hello_perf_output_using_ns.py		1843
X	kvm_hypercall.py		1520
X	kvm_hypercall.txt		1782
X	mallocstacks.py		1942
X	mysqld_query.py		1701
X	mysqld_query_example.txt		499
X	nflatency.py		6214
X	nodejs_http_server.py		1376
X	nodejs_http_server_example.txt		276
X	stack_buildid_example.py		3106
X	stacksnoop.py		3252
X	stacksnoop_example.txt		2871
X	strlen_count.py		1331
X	strlen_hist.py		1856
X	strlen_hist_ifunc.py		3800
X	strlen_snoop.py		1384
X	sync_timing.py		1390
X	task_switch.c		499
X	task_switch.py		486
X	tcpv4connect.py		2413
X	tcpv4connect_example.txt		1063
X	trace_fields.py		589
X	trace_perf_output.py		1600
X	undump.py		3602
X	undump_example.txt		886
X	urandomread-explicit.py		1511
X	urandomread.py		1032
X	urandomread_example.txt		675
X	vfsreadlat.c		896
X	vfsreadlat.py		1336
X	vfsreadlat_example.txt		3619