From 905728a036bf9d5cf0c21d684ad53882489c82c8 Mon Sep 17 00:00:00 2001 From: William Cohen Date: Thu, 18 Jun 2009 16:14:42 -0400 Subject: Check in sk_stream_wait_memory.stp example. --- testsuite/systemtap.examples/index.html | 3 +++ 1 file changed, 3 insertions(+) (limited to 'testsuite/systemtap.examples/index.html') diff --git a/testsuite/systemtap.examples/index.html b/testsuite/systemtap.examples/index.html index b2ed3a3a..a5fddb4e 100644 --- a/testsuite/systemtap.examples/index.html +++ b/testsuite/systemtap.examples/index.html @@ -97,6 +97,9 @@ keywords: NETWORK network/nettop.stp - Periodic Listing of Processes Using Network Interfaces
keywords: NETWORK TRAFFIC PER-PROCESS

Every five seconds the nettop.stp script prints out a list of processed (PID and command) with the number of packets sent/received and the amount of data sent/received by the process during that interval.

+
  • network/sk_stream_wait_memory.stp - Track Start and Stop of Processes Due to Network Buffer Space
    +keywords: NETWORK TCP BUFFER MEMORY
    +

    The sk_stream-wait_memory.stp prints a time stamp, executable, and pid each time a process blocks due to the send buffer being full. A similar entry is printed each time a process continues because there is room in the buffer.

  • network/socket-trace.stp - Trace Functions called in Network Socket Code
    keywords: NETWORK SOCKET

    The script instrument each of the functions inn the Linux kernel's net/socket.c file. The script prints out trace. The first element of a line is time delta in microseconds from the previous entry. This is followed by the command name and the PID. The "->" and "<-" indicates function entry and function exit, respectively. The last element of the line is the function name.

    • -- cgit From e6b653c8c2e63d54a3b33036130a6d8272680f54 Mon Sep 17 00:00:00 2001 From: William Cohen Date: Fri, 19 Jun 2009 11:33:29 -0400 Subject: Add froktracker.stp example. --- testsuite/systemtap.examples/index.html | 3 +++ 1 file changed, 3 insertions(+) (limited to 'testsuite/systemtap.examples/index.html') diff --git a/testsuite/systemtap.examples/index.html b/testsuite/systemtap.examples/index.html index a5fddb4e..c485713c 100644 --- a/testsuite/systemtap.examples/index.html +++ b/testsuite/systemtap.examples/index.html @@ -112,6 +112,9 @@ keywords: NETWORK process/errsnoop.stp - tabulate system call errors
    keywords: PROCESS SYSCALL

    The script prints a periodic tabular report about failing system calls, by process and by syscall failure. The first optional argument specifies the reporting interval (in seconds, default 5); the second optional argument gives a screen height (number of lines in the report, default 20).

    +
  • process/forktracker.stp - Trace Creation of Processes
    +keywords: PROCESS SCHEDULER
    +

    The forktracker.stp script prints out a time-stamped entry showing each fork and exec operation on the machine. This can be useful for determine what process is creating a flurry of short-lived processes.

  • process/futexes.stp - System-Wide Futex Contention
    keywords: SYSCALL LOCKING FUTEX

    The script watches the futex syscall on the system. On exit the futexes address, the number of contentions, and the average time for each contention on the futex are printed from lowest pid number to highest.

    • -- cgit