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Reduce CPU usage up to 25%

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