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

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After a look at preliminary results from commit 88cf37d2a8,
I realized it'd be a good idea to spew out the maximum depth measurement
seen by check_stack_depth.  So add some quick-n-dirty code to do that.
Like the previous commit, this will be reverted once we've gathered
a set of buildfarm runs with it.
This commit is contained in:
Tom Lane
2016-07-08 16:38:22 -04:00
parent 769159fd39
commit ea9c4a16d5
2 changed files with 24 additions and 0 deletions
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12
src/backend/storage/ipc/ipc.c
View File

@ -35,6 +35,9 @@
#include "storage/ipc.h" #include "storage/ipc.h"
#include "tcop/tcopprot.h" #include "tcop/tcopprot.h"
extern long max_measured_stack_depth;
extern long max_measured_register_stack_depth;
/* /*
* This flag is set during proc_exit() to change ereport()'s behavior, * This flag is set during proc_exit() to change ereport()'s behavior,
@ -121,6 +124,15 @@ report_stack_size(void)
(int) getpid()); (int) getpid());
(void) system(sysbuf); (void) system(sysbuf);
#endif #endif
#if defined(__ia64__) || defined(__ia64)
fprintf(stderr, "max measured stack depths %ldkB, %ldkB\n",
(max_measured_stack_depth + 1023) / 1024,
(max_measured_register_stack_depth + 1023) / 1024);
#else
fprintf(stderr, "max measured stack depth %ldkB\n",
(max_measured_stack_depth + 1023) / 1024);
#endif
} }

12
src/backend/tcop/postgres.c
View File

@ -96,6 +96,9 @@ int max_stack_depth = 100;
/* wait N seconds to allow attach from a debugger */ /* wait N seconds to allow attach from a debugger */
int PostAuthDelay = 0; int PostAuthDelay = 0;
/* Exported for use by proc_exit */
long max_measured_stack_depth = 0;
long max_measured_register_stack_depth = 0;
/* ---------------- /* ----------------
@ -3137,6 +3140,11 @@ stack_is_too_deep(void)
if (stack_depth < 0) if (stack_depth < 0)
stack_depth = -stack_depth; stack_depth = -stack_depth;
/* Track max measured depth for reporting by proc_exit */
if (stack_depth > max_measured_stack_depth &&
stack_base_ptr != NULL)
max_measured_stack_depth = stack_depth;
/* /*
* Trouble? * Trouble?
* *
@ -3160,6 +3168,10 @@ stack_is_too_deep(void)
#if defined(__ia64__) || defined(__ia64) #if defined(__ia64__) || defined(__ia64)
stack_depth = (long) (ia64_get_bsp() - register_stack_base_ptr); stack_depth = (long) (ia64_get_bsp() - register_stack_base_ptr);
if (stack_depth > max_measured_register_stack_depth &&
register_stack_base_ptr != NULL)
max_measured_register_stack_depth = stack_depth;
if (stack_depth > max_stack_depth_bytes && if (stack_depth > max_stack_depth_bytes &&
register_stack_base_ptr != NULL) register_stack_base_ptr != NULL)
return true; return true;