高负载下死锁

[GoogleCodeExporter]

What steps will reproduce the problem?
1.高负载下，用delete(key)函数时，出现xmemcached-reactor1/xmemcached-
reactorN, await死锁。
2.效率急剧下降，大概每秒处理2-3条删除指令。
3.

What is the expected output? What do you see instead?
只有图片，无相关内容

What version of the product are you using? On what operating system?
版本1.4.2 操作系统redhat， 内核2.6.32-279,x86-64

Please provide any additional information below.
有16个memcached server， xmem客户端连接池设置为100

Original issue reported on code.google.com by flywxl...@gmail.com on 12 Sep 2014 at 3:03

[GoogleCodeExporter]

await 不表示死锁，如果死锁，在线程 jstack dump 下来会有 deak 
lock 提示。

Original comment by xzhu...@leancloud.rocks on 12 Sep 2014 at 3:23