06 2013 档案

摘要：1 #!/bin/python 2 # download_pic.py 3 # download picture 4 import os 5 import sys 6 from urllib.request import urlopen 7 8 url = sys.argv[1] 9 page = urlopen(url)10 #需要指定编码格式11 html = str(page.read(),encoding='utf8')12 page.close()13 14 #create directory15 if os.path.exists("./picture&q 阅读全文

摘要：最近公司redis服务出现了异常，记录下教训:redis异常后:观察redis服务，可以看到redis cpu占用100%用strace命令查看redis进程，显示如下：open("/var/log/redis/redis.log", O_WRONLY|O_CREAT|O_APPEND, 0666) = -1 EMFILE (Too many open files)epoll_wait(3, {{EPOLLIN, {u32=4, u64=4}}}, 10240, 88) = 1accept(4, 0x7fff9864c840, [883955190649061392]) = 阅读全文