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CMakeLists.txt
276
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biolatpcts.py
3.23
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biolatpcts_example.txt
650
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bitehist.py
1.36
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bitehist_example.txt
1.18
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dddos.py
3.73
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dddos_example.txt
2.06
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disksnoop.py
1.9
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disksnoop_example.txt
1.55
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hello_fields.py
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hello_perf_output.py
1.24
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hello_perf_output_using_ns.py
1.8
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kvm_hypercall.py
1.48
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kvm_hypercall.txt
1.74
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mallocstacks.py
1.9
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mysqld_query.py
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mysqld_query_example.txt
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nflatency.py
6.07
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nodejs_http_server.py
1.34
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nodejs_http_server_example.txt
276
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stack_buildid_example.py
3.03
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stacksnoop.py
3.18
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stacksnoop_example.txt
2.8
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strlen_count.py
1.3
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strlen_hist.py
1.81
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strlen_hist_ifunc.py
3.71
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strlen_snoop.py
1.35
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sync_timing.py
1.36
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task_switch.c
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task_switch.py
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tcpv4connect.py
2.36
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tcpv4connect_example.txt
1.04
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trace_fields.py
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trace_perf_output.py
1.56
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undump.py
3.52
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undump_example.txt
886
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urandomread-explicit.py
1.48
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urandomread.py
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urandomread_example.txt
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vfsreadlat.c
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vfsreadlat.py
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vfsreadlat_example.txt
3.53
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Demonstrations of tcpv4connect.py, the Linux eBPF/bcc version. This example traces the kernel function performing active TCP IPv4 connections (eg, via a connect() syscall; accept() are passive connections). Some example output (IP addresses changed to protect the innocent): # ./tcpv4connect.py PID COMM SADDR DADDR DPORT 1479 telnet 127.0.0.1 127.0.0.1 23 1469 curl 10.201.219.236 54.245.105.25 80 1469 curl 10.201.219.236 54.67.101.145 80 This output shows three connections, one from a "telnet" process and two from "curl". The output details shows the source address, destination address, and destination port. This traces attempted connections: these may have failed. The overhead of this tool should be negligible, since it is only tracing the kernel function performing a connect. It is not tracing every packet and then filtering. This is provided as a basic example of TCP tracing. See tools/tcpconnect for a more featured version of this example (a tool).