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[Bug gprofng/29631] New: [display text] Incorrect percentages shown in t
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From: |
ruud.vanderpas at oracle dot com |
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Subject: |
[Bug gprofng/29631] New: [display text] Incorrect percentages shown in the source and disassembly output |
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Date: |
Wed, 28 Sep 2022 14:13:45 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=29631
Bug ID: 29631
Summary: [display text] Incorrect percentages shown in the
source and disassembly output
Product: binutils
Version: 2.39
Status: NEW
Severity: normal
Priority: P2
Component: gprofng
Assignee: vladimir.mezentsev at oracle dot com
Reporter: ruud.vanderpas at oracle dot com
Target Milestone: ---
Created attachment 14366
--> https://sourceware.org/bugzilla/attachment.cgi?id=14366&action=edit
The experiment directory used to produce the output given
The source and disassembly output gives a value of 0. for the percentages of
all the metrics.
Attached is an experiment directory that was used to verify this issue. I also
include the output below.
The following command was used to generate this output:
$ gprofng display text -source mxv_core -dis mxv_core test.1.er
=========
Source file: /home/opc/00.dev/experiments/mxv/src/mxv.c
Object file: mxv-pthreads.exe (found as
test.1.er/archives/mxv-pthreads.exe__wAocSNXHc8)
Load Object: mxv-pthreads.exe (found as
test.1.er/archives/mxv-pthreads.exe__wAocSNXHc8)
Excl. Total Incl. Total
CPU CPU
sec. % sec. %
1. #include "mydefs.h"
2.
<Function: driver_mxv>
0. 0. 0. 0. 3. void *driver_mxv(void
*thread_arguments)
0. 0. 0. 0. 4. {
0. 0. 0. 0. 5. thread_data *local_data;
6.
0. 0. 0. 0. 7. local_data = (thread_data *)
thread_arguments;
8.
0. 0. 0. 0. 9. bool do_work =
local_data->do_work;
0. 0. 0. 0. 10. int64_t repeat_count =
local_data->repeat_count;
0. 0. 0. 0. 11. uint64_t row_index_start =
local_data->row_index_start;
0. 0. 0. 0. 12. uint64_t row_index_end =
local_data->row_index_end;
0. 0. 0. 0. 13. uint64_t m =
local_data->m;
0. 0. 0. 0. 14. uint64_t n =
local_data->n;
0. 0. 0. 0. 15. double *b =
local_data->b;
0. 0. 0. 0. 16. double *c =
local_data->c;
0. 0. 0. 0. 17. double **A =
local_data->A;
18.
0. 0. 0. 0. 19. if (do_work) {
0. 0. 0. 0. 20. for (int64_t r=0; r<repeat_count;
r++) {
## 0. 0. 11.548 0. 21. (void)
mxv_core(row_index_start, row_index_end, m, n, A, b, c);
22. }
23. }
24.
0. 0. 0. 0. 25. return(0);
0. 0. 0. 0. 26. }
27.
28. /*
29. * Disable inlining to avoid the repeat
count loop is removed by the compiler
30. */
31.
<Function: mxv_core>
0. 0. 0. 0. 32. void __attribute__ ((noinline))
mxv_core(uint64_t row_index_start, uint64_t row_index_end, uint64_t m, uint64_t
n, double **restrict A, double *restrict b, double *restrict c)
0. 0. 0. 0. 33. {
0. 0. 0. 0. 34. for (uint64_t i=row_index_start;
i<=row_index_end; i++) {
0. 0. 0. 0. 35. double row_sum = 0.0;
## 5.904 0. 5.904 0. 36. for (int64_t j=0; j<n; j++)
## 5.644 0. 5.644 0. 37. row_sum += A[i][j] * b[j];
0. 0. 0. 0. 38. c[i] = row_sum;
39. }
0. 0. 0. 0. 40. }
Source file: /home/opc/00.dev/experiments/mxv/src/mxv.c
Object file: mxv-pthreads.exe (found as
test.1.er/archives/mxv-pthreads.exe__wAocSNXHc8)
Load Object: mxv-pthreads.exe (found as
test.1.er/archives/mxv-pthreads.exe__wAocSNXHc8)
Excl. Total Incl. Total
CPU CPU
sec. % sec. %
1. #include "mydefs.h"
2.
3. void *driver_mxv(void
*thread_arguments)
4. {
5. thread_data *local_data;
6.
7. local_data = (thread_data *)
thread_arguments;
8.
9. bool do_work =
local_data->do_work;
10. int64_t repeat_count =
local_data->repeat_count;
11. uint64_t row_index_start =
local_data->row_index_start;
12. uint64_t row_index_end =
local_data->row_index_end;
13. uint64_t m =
local_data->m;
14. uint64_t n =
local_data->n;
15. double *b =
local_data->b;
16. double *c =
local_data->c;
17. double **A =
local_data->A;
18.
19. if (do_work) {
20. for (int64_t r=0; r<repeat_count;
r++) {
21. (void)
mxv_core(row_index_start, row_index_end, m, n, A, b, c);
22. }
23. }
24.
25. return(0);
26. }
27.
28. /*
29. * Disable inlining to avoid the repeat
count loop is removed by the compiler
30. */
31.
32. void __attribute__ ((noinline))
mxv_core(uint64_t row_index_start, uint64_t row_index_end, uint64_t m, uint64_t
n, double **restrict A, double *restrict b, double *restrict c)
33. {
<Function: mxv_core>
0. 0. 0. 0. [33] 4021ae: mov 0x8(%rsp),%r10
34. for (uint64_t i=row_index_start;
i<=row_index_end; i++) {
0. 0. 0. 0. [34] 4021b3: cmp %rsi,%rdi
0. 0. 0. 0. [34] 4021b6: jbe 0x37
0. 0. 0. 0. [34] 4021b8: ret
35. double row_sum = 0.0;
36. for (int64_t j=0; j<n; j++)
37. row_sum += A[i][j] * b[j];
0. 0. 0. 0. [37] 4021b9: mov
(%r8,%rdi,8),%rdx
0. 0. 0. 0. [36] 4021bd: mov $0x0,%eax
0. 0. 0. 0. [35] 4021c2: pxor %xmm1,%xmm1
0.020 0. 0.020 0. [37] 4021c6: movsd
(%rdx,%rax,8),%xmm0
2.832 0. 2.832 0. [37] 4021cb: mulsd
(%r9,%rax,8),%xmm0
2.792 0. 2.792 0. [37] 4021d1: addsd %xmm0,%xmm1
## 5.904 0. 5.904 0. [36] 4021d5: add $0x1,%rax
0. 0. 0. 0. [36] 4021d9: cmp %rax,%rcx
0. 0. 0. 0. [36] 4021dc: jne
0xffffffffffffffea
38. c[i] = row_sum;
0. 0. 0. 0. [38] 4021de: movsd
%xmm1,(%r10,%rdi,8)
0. 0. 0. 0. [34] 4021e4: add $0x1,%rdi
0. 0. 0. 0. [34] 4021e8: cmp %rdi,%rsi
0. 0. 0. 0. [34] 4021eb: jb 0xd
0. 0. 0. 0. [35] 4021ed: pxor %xmm1,%xmm1
0. 0. 0. 0. [36] 4021f1: test %rcx,%rcx
0. 0. 0. 0. [36] 4021f4: jne
0xffffffffffffffc5
0. 0. 0. 0. [36] 4021f6: jmp
0xffffffffffffffe8
39. }
40. }
0. 0. 0. 0. [40] 4021f8: ret
--
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ruud.vanderpas at oracle dot com <=