linux服务器内存满了

free -m

top

ps aux --sort=-%mem | head

kill -9 <PID>

swapon --show

sudo fallocate -l 4G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile

valgrind --tool=memcheck --leak-check=full ./your_program

echo 1 > /proc/sys/vm/oom_kill_allocating_task

import psutil
import smtplib
from email.mime.text import MIMEText

def check_memory_usage():
    memory_usage = psutil.virtual_memory().percent
    if memory_usage > 90:
        send_alert_email(memory_usage)

def send_alert_email(usage):
    msg = MIMEText(f"Memory usage is at {usage}%")
    msg['Subject'] = 'High Memory Usage Alert'
    msg['From'] = 'your_email@example.com'
    msg['To'] = 'recipient@example.com'

    with smtplib.SMTP('smtp.example.com') as server:
        server.login('your_email@example.com', 'your_password')
        server.sendmail('your_email@example.com', ['recipient@example.com'], msg.as_string())

if __name__ == "__main__":
    check_memory_usage()