fluencelabs/redis
1
0
Fork 0
mirror of https://github.com/fluencelabs/redis synced 2025-03-19 09:00:51 +00:00
Code Issues Projects Releases Wiki Activity

Memory addressing test implemented.

Browse Source
This commit is contained in:
antirez 2012-03-19 14:02:34 +01:00
parent d033ccb0af
commit d4a515c56d
1 changed files with 32 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
src/memtest.c
View File

@ -56,6 +56,33 @@ void memtest_progress_step(size_t curr, size_t size, char c) {
fflush(stdout);
}
/* Test that addressing is fine. Every location is populated with its own
* address, and finally verified. This test is very fast but may detect
* ASAP big issues with the memory subsystem. */
void memtest_addressing(unsigned long *l, size_t bytes) {
unsigned long words = bytes/sizeof(unsigned long);
unsigned long j, *p;
/* Fill */
p = l;
for (j = 0; j < words; j++) {
*p = (unsigned long)p;
p++;
if ((j & 0xffff) == 0) memtest_progress_step(j,words*2,'A');
}
/* Test */
p = l;
for (j = 0; j < words; j++) {
if (*p != (unsigned long)p) {
printf("\n*** MEMORY ADDRESSING ERROR: %p contains %lu\n",
(void*) p, *p);
exit(1);
}
p++;
if ((j & 0xffff) == 0) memtest_progress_step(j+words,words*2,'A');
}
}
/* Fill words stepping a single page at every write, so we continue to
* touch all the pages in the smallest amount of time reducing the
* effectiveness of caches, and making it hard for the OS to transfer
@ -162,6 +189,11 @@ void memtest_test(size_t megabytes, int passes) {
}
while (pass != passes) {
pass++;
memtest_progress_start("Addressing test",pass);
memtest_addressing(m,bytes);
memtest_progress_end();
memtest_progress_start("Random fill",pass);
memtest_fill_random(m,bytes);
memtest_progress_end();