@lwjcjmx123
@wangdu2012
@eoo

不好意思，刚刚要到简历，交流中觉得是一个逻辑思维很强的女生。

https://pan.baidu.com/s/1nvAUvXJ

挂代理不行，我今天也遇到了。

@kidict 今天去看过，感觉没有网上说的好，验光时间十几分钟。

1. receiver 通常用指针( ref:https://github.com/golang/go/wiki/CodeReviewComments#receiver-type)
2. Slices, maps, channels, strings, function values, and interface values 实现机制类似指针，所以可以直接传递
3. 大的结构体和将要修改的结构体用指针。因为指针拷贝代价小，并且可以直接操作对象。

@raincious 优点是指针的拷贝代价小？

@kevinzhow 谢谢你的代码，大概了解你的意思。指针作为参数可以操作对象本身。但是上面的代码不用指针也可以的，用指针有什么优点呢？

@BOYPT 谢谢，后来我也发现了 ansible 里这段代码。

```
def write_file(module, url, dest, content):
# create a tempfile with some test content
fd, tmpsrc = tempfile.mkstemp()
f = open(tmpsrc, 'wb')
try:
f.write(content)
except Exception, err:
os.remove(tmpsrc)
module.fail_json(msg="failed to create temporary content file: %s" % str(err))
f.close()
```

fd, tmpsrc = tempfile.mkstemp() 生成的 fd 没有 close 。

还有一个问题，就是发现线上服务器上 /dev/null 这个描述符。这个可能是什么没有关呢？

@BOYPT @ryd994

查了一下文件已经删除，但是没有释放的文件描述符。

[root@85-13-112]# lsof | grep deleted
python 19327 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19332 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19332 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19334 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19334 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19335 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19335 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19336 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19336 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19337 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19337 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19338 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19338 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19339 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19339 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19340 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19340 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19341 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19341 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19342 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19342 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19343 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19343 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19344 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19344 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19345 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19345 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19346 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19346 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19347 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19347 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19348 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19348 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19349 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19349 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19350 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19350 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19351 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19351 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19352 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19352 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19353 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19353 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19354 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19354 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19355 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19355 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19356 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19356 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19357 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19357 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19358 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19358 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19359 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19359 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19360 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19360 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19361 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19361 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19362 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19362 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)
python 19327 19363 root 8u REG 252,2 0 534767 /tmp/tmp4Hlr9O (deleted)
python 19327 19363 root 12u REG 252,2 0 534768 /tmp/tmp2TSn03 (deleted)

[root@85-13-112]# lsof | grep deleted | wc -l
65

我的经常唤醒之后，要好几秒才出现登录界面

请问有找到类似的系统参考吗？

是像这样吗？

http://i.imgur.com/65iKn7U.jpg
http://i.imgur.com/e9vukH3.jpg

@skidxjq 我的是电源问题，换了一块电池好了。