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Add some temporary code to record stack usage at server process exit.

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This patch is meant to gather information from the buildfarm members, and
will be reverted in a day or so.  The idea is to try to find out the
high-water stack consumption while running the regression tests,
particularly on IA64 which is suspected to use much more stack than other
architectures.  On machines with pmap, we can use that; but the IA64 farm
members are running HPUX, so also include some bespoke code for HPUX.
(I've tested the latter on HPUX 10/HPPA; not entirely sure it will work
on HPUX 11/IA64, but we'll soon find out.)

Discussion: <CAM-w4HMwwcwaVvYcAH0_FGtG5GeXdYVRfvG81pXnSJWHnCfosQ@mail.gmail.com>
This commit is contained in:
Tom Lane 2016-07-08 12:01:08 -04:00
parent e8bde9e253
commit 88cf37d2a8
1 changed files with 47 additions and 0 deletions
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47
src/backend/storage/ipc/ipc.c
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@ -22,6 +22,10 @@
#include <signal.h>
#include <unistd.h>
#include <sys/stat.h>
#if defined(__hpux)
#include <sys/param.h>
#include <sys/pstat.h>
#endif
#include "miscadmin.h"
#ifdef PROFILE_PID_DIR
@ -80,6 +84,46 @@ static int on_proc_exit_index,
before_shmem_exit_index;
/* Report process's stack consumption to stderr */
static void
report_stack_size(void)
{
#if defined(__hpux)
/* HPUX: examine process's memory map with pstat_getprocvm() */
int targetpid = getpid();
struct pst_vm_status buf;
int res;
int ndx;
for (ndx = 0;; ndx++)
{
res = pstat_getprocvm(&buf, sizeof(buf), targetpid, ndx);
if (res < 0)
{
perror("getprocvm");
break;
}
if (res != 1)
break;
if (buf.pst_type != PS_STACK)
continue;
fprintf(stderr, "%d: stack addr 0x%lx, length %ld, physical pages %ld\n",
targetpid,
buf.pst_vaddr,
buf.pst_length,
buf.pst_phys_pages);
}
#else /* non HPUX */
/* Otherwise: try to use pmap. No error if that doesn't work. */
char sysbuf[128];
snprintf(sysbuf, sizeof(sysbuf), "pmap -x %d | grep -i stack 1>&2",
(int) getpid());
(void) system(sysbuf);
#endif
}
/* ----------------------------------------------------------------
* proc_exit
*
@ -101,6 +145,9 @@ proc_exit(int code)
/* Clean up everything that must be cleaned up */
proc_exit_prepare(code);
/* report stack size to stderr */
report_stack_size();
#ifdef PROFILE_PID_DIR
{
/*