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runners: A number of stack/heap measurement tweaks

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- Renamed BENCH_STACK/HEAP -> BENCH_STACK/HEAP_WATERMARK

- Renamed BENCH_YES_STACK/HEAP -> BENCH_STACK/HEAP

- Tweaked stack/heap watermarks to hopefully be easier to access when
  debugging. Now also exposed as global variables
  (bench_stack/heap_watermark).

  I considered changing BENCH_STACK/HEAP_WATERMARK to be the variable
  itself, to be consistent with TEST_PLS, but decided against it:

  1. BENCH_STACK_CURRENT() is a bit magic in that it relies on
     __attribute__((noinline)) to force a new stack frame. This wouldn't
     really be possible with a variable.

  2. TEST_PLS is at least constant from the _current run_'s perspective.
     This isn't true for the stack/heap watermarks.

- Reworked internals a bit to hopefully be simpler
This commit is contained in:
Christopher Haster
2026-02-05 23:24:32 -06:00
parent a914057407
commit c1b86ac9db
7 changed files with 168 additions and 318 deletions
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benches/bench_wt.toml
+16 -16
View File
@@ -83,11 +83,11 @@ code = '''
BENCH_STOP("write", written);
// report the total stack/heap usage after the benchmark
#ifdef BENCH_YES_STACK
BENCH_RESULT("stack", written, BENCH_STACK());
#ifdef BENCH_STACK
BENCH_RESULT("stack", written, BENCH_STACK_WATERMARK());
#endif
#ifdef BENCH_YES_HEAP
BENCH_RESULT("heap", written, BENCH_HEAP());
#ifdef BENCH_HEAP
BENCH_RESULT("heap", written, BENCH_HEAP_WATERMARK());
#endif
// find the total disk usage after the benchmark
@@ -144,11 +144,11 @@ code = '''
BENCH_STOP("write", written);
// report the total stack/heap usage after the benchmark
#ifdef BENCH_YES_STACK
BENCH_RESULT("stack", written, BENCH_STACK());
#ifdef BENCH_STACK
BENCH_RESULT("stack", written, BENCH_STACK_WATERMARK());
#endif
#ifdef BENCH_YES_HEAP
BENCH_RESULT("heap", written, BENCH_HEAP());
#ifdef BENCH_HEAP
BENCH_RESULT("heap", written, BENCH_HEAP_WATERMARK());
#endif
// find the total disk usage after the benchmark
@@ -223,11 +223,11 @@ code = '''
BENCH_STOP("write", written);
// report the total stack/heap usage after the benchmark
#ifdef BENCH_YES_STACK
BENCH_RESULT("stack", written, BENCH_STACK());
#ifdef BENCH_STACK
BENCH_RESULT("stack", written, BENCH_STACK_WATERMARK());
#endif
#ifdef BENCH_YES_HEAP
BENCH_RESULT("heap", written, BENCH_HEAP());
#ifdef BENCH_HEAP
BENCH_RESULT("heap", written, BENCH_HEAP_WATERMARK());
#endif
// find the total disk usage after the benchmark
@@ -292,11 +292,11 @@ code = '''
BENCH_STOP("write", written);
// report the total stack/heap usage after the benchmark
#ifdef BENCH_YES_STACK
BENCH_RESULT("stack", written, BENCH_STACK());
#ifdef BENCH_STACK
BENCH_RESULT("stack", written, BENCH_STACK_WATERMARK());
#endif
#ifdef BENCH_YES_HEAP
BENCH_RESULT("heap", written, BENCH_HEAP());
#ifdef BENCH_HEAP
BENCH_RESULT("heap", written, BENCH_HEAP_WATERMARK());
#endif
// find the total disk usage after the benchmark