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Add memory info to getrusage output

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Add the maxrss field to the getrusage output (log_*_stats).  This was
previously omitted because of portability concerns, but we feel this
might not be a concern anymore.

based on patch by Justin Pryzby <pryzby@telsasoft.com>
This commit is contained in:
Peter Eisentraut 2017-09-01 15:36:33 -04:00
parent 0cb8b7531d
commit c039ba0716
1 changed files with 12 additions and 5 deletions
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17
src/backend/tcop/postgres.c
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@ -4421,11 +4421,8 @@ ShowUsage(const char *title)
}
/*
* the only stats we don't show here are for memory usage -- i can't
* figure out how to interpret the relevant fields in the rusage struct,
* and they change names across o/s platforms, anyway. if you can figure
* out what the entries mean, you can somehow extract resident set size,
* shared text size, and unshared data and stack sizes.
* The only stats we don't show here are ixrss, idrss, isrss. It takes
* some work to interpret them, and most platforms don't fill them in.
*/
initStringInfo(&str);
@ -4445,6 +4442,16 @@ ShowUsage(const char *title)
(long) sys.tv_sec,
(long) sys.tv_usec);
#if defined(HAVE_GETRUSAGE)
appendStringInfo(&str,
"!\t%ld kB max resident size\n",
#if defined(__darwin__)
/* in bytes on macOS */
r.ru_maxrss/1024
#else
/* in kilobytes on most other platforms */
r.ru_maxrss
#endif
);
appendStringInfo(&str,
"!\t%ld/%ld [%ld/%ld] filesystem blocks in/out\n",
r.ru_inblock - Save_r.ru_inblock,