github/nohang
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Reduce CPU usage up to 25%

Browse Source 
Optimize reading /proc/meminfo
This commit is contained in:
Alexey Avramov 2020-03-15 00:03:50 +09:00
parent 045b3922a3
commit 747cff404e
1 changed files with 5 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
nohang/nohang
View File

@ -1339,18 +1339,11 @@ def find_psi_metrics_value(psi_path, psi_metrics):
def check_mem_and_swap(): def check_mem_and_swap():
""" """
""" """
with open('/proc/meminfo') as f: with open('/proc/meminfo', 'rb') as f:
for n, line in enumerate(f): m_list = f.read().decode().split(' kB\n')
if n == 2: return (int(m_list[2].split(':')[1]),
mem_available = int(line.split(':')[1][:-4]) int(m_list[swap_total_index].split(':')[1]),
continue int(m_list[swap_free_index].split(':')[1]))
if n is swap_total_index:
swap_total = int(line.split(':')[1][:-4])
continue
if n is swap_free_index:
swap_free = int(line.split(':')[1][:-4])
break
return mem_available, swap_total, swap_free
def check_zram(): def check_zram():