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memory_test
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update 

Signed-off-by: Wenchao Hao <haowenchao22@gmail.com>
This commit is contained in:
Wenchao Hao 2024-11-19 21:52:41 +08:00
parent 8478ddacda
commit 9d926a44d5
2 changed files with 53 additions and 1 deletions
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38
run.sh Normal file
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@ -0,0 +1,38 @@
echo always > /sys/kernel/mm/transparent_hugepage/hugepages-64kB/enabled
tmpfile=$(mktemp)
pgfault1=$(cat /proc/vmstat | grep pgfault | awk '{print $2}')
./test_swap > $tmpfile
pgfault2=$(cat /proc/vmstat | grep pgfault | awk '{print $2}')
swapout=$(head -n 1 $tmpfile | awk '{print $4}')
swapin=$(tail -n 1 $tmpfile | awk '{print $4}')
cat /sys/block/zram0/mm_stat > $tmpfile
total_size=$(cat $tmpfile | awk '{print $1}')
used_size=$(cat $tmpfile | awk '{print $2}')
comp_ratio=`echo "scale=4; $total_size / $used_size" | bc`
anon_fault_alloc=$(cat /sys/kernel/mm/transparent_hugepage/hugepages-64kB/stats/anon_fault_alloc)
anon_fault_fallback=$(cat /sys/kernel/mm/transparent_hugepage/hugepages-64kB/stats/anon_fault_fallback)
anon_total=$(($anon_fault_fallback + $anon_fault_alloc))
folio_alloc_success_ratio=`echo "scale=4; $anon_fault_alloc / $anon_total" | bc`
swpout_alloc=$(cat /sys/kernel/mm/transparent_hugepage/hugepages-64kB/stats/swpout)
swpout_fault_fallback=$(cat /sys/kernel/mm/transparent_hugepage/hugepages-64kB/stats/swpout_fallback)
swpout_total=$(($swpout_fault_fallback + $swpout_alloc))
swap_success_ratio=`echo "scale=4; $swpout_alloc / $swpout_total" | bc`
echo swapout $swapout
echo swapin $swapin
echo comp_ratio $comp_ratio
echo pagefault $((pgfault2-pgfault1))
echo folio_alloc_success_ratio $folio_alloc_success_ratio
echo swap_success_ratio $swap_success_ratio
killall test_swap

16
test_swap.c
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@ -22,6 +22,7 @@ int main()
{
int i;
char *c;
pid_t pid;
unsigned long *p;
struct timeval tv_b, tv_e;;
@ -35,7 +36,7 @@ int main()
/* fill data */
for (i = 0; i < SIZE / 8; i += 8)
*(p + i) = i;
*(p + i) = (unsigned long)rand() << 32 | rand();
/* trigger pageout and get time of pageout */
gettimeofday(&tv_b, NULL);
@ -54,5 +55,18 @@ int main()
printf("swp in bandwidth: %ld bytes/ms\n",
SIZE/(tv_to_ms(tv_e) - tv_to_ms(tv_b)));
pid = fork();
if (pid) {
munmap(p, SIZE);
return 0;
}
madvise(p, SIZE, MADV_PAGEOUT);
while (1) {
sleep(10);
}
return 0;
}