satoru-takeuchi

...
[    0.227720] raid6: sse2x1   gen()  7985 MB/s
[    0.295709] raid6: sse2x1   xor()  8181 MB/s
[    0.363706] raid6: sse2x2   gen() 17531 MB/s
[    0.431699] raid6: sse2x2   xor() 11098 MB/s
[    0.499693] raid6: sse2x4   gen() 18509 MB/s
[    0.567688] raid6: sse2x4   xor() 10177 MB/s
[    0.571692] invalid opcode: 0000 [#1] SMP
[    0.572312] Modules linked in:
[    0.572822] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.11.0-rc8-ktest #1

satoru-takeuchi

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <err.h>

#define PAGESIZE 4096
#define DISKS 4

typedef unsigned char u8;
typedef unsigned long u64;

satoru-takeuchi

...
0000000000400510 <main>:
  400510:       55                      push   %rbp
  400511:       53                      push   %rbx
  400512:       bb 80 10 60 00          mov    $0x601080,%ebx
  400517:       48 83 ec 08             sub    $0x8,%rsp
  40051b:       e8 90 ff ff ff          callq  4004b0 <__errno_location@plt>
  400520:       48 89 c5                mov    %rax,%rbp
  400523:       ba 00 10 00 00          mov    $0x1000,%edx
  400528:       be 00 10 00 00          mov    $0x1000,%esi

satoru-takeuchi

ffffffff8159a7b0 <raid6_avx21_gen_syndrome>:
ffffffff8159a7b0:       8d 47 fd                lea    -0x3(%rdi),%eax
ffffffff8159a7b3:       55                      push   %rbp
ffffffff8159a7b4:       48 98                   cltq
ffffffff8159a7b6:       48 89 e5                mov    %rsp,%rbp
ffffffff8159a7b9:       41 57                   push   %r15
ffffffff8159a7bb:       48 83 c0 01             add    $0x1,%rax
ffffffff8159a7bf:       41 56                   push   %r14
ffffffff8159a7c1:       41 55                   push   %r13
ffffffff8159a7c3:       41 54                   push   %r12

satoru-takeuchi

/*
 * a light weight programming language interpreter
 *
 * usage: ./lang <code>
 *
 * - prefix notation
 * - 'A' to 'Z' can bs used for functions. 'P' is a specitial function to print
 *   the result of a evaluation
 * - 'a' to 'z' can be used for the arguments of a function. 'a' is the first
 *   argument, 'b' is the second one, and so on.

satoru-takeuchi

0: Tue Jun  6 17:46:59 DST 2017: OK
1: Tue Jun  6 17:50:49 DST 2017: OK
2: Tue Jun  6 17:54:37 DST 2017: OK
3: Tue Jun  6 17:58:25 DST 2017: OK
4: Tue Jun  6 18:02:16 DST 2017: OK
5: Tue Jun  6 18:06:11 DST 2017: OK
6: Tue Jun  6 18:10:04 DST 2017: OK
7: Tue Jun  6 18:13:51 DST 2017: OK
8: Tue Jun  6 18:17:46 DST 2017: OK
9: Tue Jun  6 18:21:40 DST 2017: OK

satoru-takeuchi

#!/bin/bash

export LANG=C

for ((i=0;1;i++)) ; do
  if make -j16 >/dev/null 2>>log.txt ; then
    echo "$i: $(date): OK" >>log.txt
  else
    echo "$i: $(date): NG" >>log.txt
  fi

satoru-takeuchi

0: Tue Jun  6 17:46:59 DST 2017: OK
1: Tue Jun  6 17:50:49 DST 2017: OK
2: Tue Jun  6 17:54:37 DST 2017: OK
3: Tue Jun  6 17:58:25 DST 2017: OK
4: Tue Jun  6 18:02:16 DST 2017: OK
5: Tue Jun  6 18:06:11 DST 2017: OK
6: Tue Jun  6 18:10:04 DST 2017: OK
7: Tue Jun  6 18:13:51 DST 2017: OK
8: Tue Jun  6 18:17:46 DST 2017: OK
9: Tue Jun  6 18:21:40 DST 2017: OK

satoru-takeuchi

0: Tue Jun  6 21:03:41 DST 2017: OK
1: Tue Jun  6 21:07:28 DST 2017: OK
2: Tue Jun  6 21:11:15 DST 2017: OK
3: Tue Jun  6 21:15:02 DST 2017: OK
4: Tue Jun  6 21:18:48 DST 2017: OK
5: Tue Jun  6 21:22:39 DST 2017: OK
6: Tue Jun  6 21:26:24 DST 2017: OK
7: Tue Jun  6 21:30:07 DST 2017: OK
8: Tue Jun  6 21:33:49 DST 2017: OK
9: Tue Jun  6 21:37:32 DST 2017: OK

satoru-takeuchi

code=128 comm=cc1 pid=19539 grp=0 res=0
           <...>-19539 [014] d...  3257.455416: <stack trace>
 => send_signal
 => force_sig_info
 => do_general_protection
 => general_protection