mirror of
https://github.com/berkeleydb/libdb.git
synced 2024-09-28 11:36:55 +00:00
54 lines
1.3 KiB
Text
Executable file
54 lines
1.3 KiB
Text
Executable file
#!/usr/bin/stap
|
|
/*
|
|
* Copyright (c) 2011, 2012 Oracle and/or its affiliates. All rights reserved.
|
|
*
|
|
* apitimes - Graph the time spent in DB API calls grouped by thread or processid
|
|
*
|
|
* The path to the DB library is required to be the first argument.
|
|
*
|
|
* To limit tracing to a particular process use one of the stap options:
|
|
* -x <pid> or
|
|
* -c "<program> [<program arguments>..]"
|
|
*
|
|
*/
|
|
|
|
global functioncount, maxcount, starts, times;
|
|
|
|
probe begin
|
|
{
|
|
functioncount = 0;
|
|
maxcount = -1;
|
|
%( $# >= 2 %? maxcount = $2 %)
|
|
printf("DB API times of ");
|
|
if (target() == 0)
|
|
printf("processes using \"%s\"", @1)
|
|
else
|
|
printf("process %d", target());
|
|
printf(" grouped by function; interrupt to display summary\n");
|
|
}
|
|
|
|
probe process(@1).function("db*_create").call,
|
|
process(@1).function("__*_pp").call
|
|
{
|
|
starts[tid(), probefunc()] = gettimeofday_ns();
|
|
}
|
|
|
|
|
|
probe process(@1).function("db*_create").return,
|
|
process(@1).function("__*_pp").return
|
|
{
|
|
if ((start = starts[tid(), probefunc()]) != 0) {
|
|
times[tid(), probefunc()] <<< gettimeofday_ns() - start;
|
|
if (++functioncount == maxcount)
|
|
exit();
|
|
}
|
|
}
|
|
|
|
probe end
|
|
{
|
|
foreach ([tid, func] in times) {
|
|
printf("Times that thread %x spent in %s in nanoseconds\n",
|
|
tid, func);
|
|
print(@hist_log(times[tid, func]));
|
|
}
|
|
}
|