redis服务器选型

公司要使用redis作为key/value和简单结构的缓存服务器，同时作为高速队列使用，替换原来的memcached。
针对redis服务器的选型，简单的说是单线程能力的cpu越强越好，同时redis可以在一台服务器上部署多个点。
经过对比测试，最终决定使用性价比较高的dell R310单路服务器，X3470的处理器，32G内存，虽然内存只能工作在800MH，但redis更依赖CPU单线程的能力。
以下是测试数据，redis使用的2.2.2版
X3470

[root@l53-64 ~]# redis-benchmark -n 100000 -q
PING (inline): 123152.71 requests per second
PING: 123456.79 requests per second
MSET (10 keys): 79176.56 requests per second
SET: 122549.02 requests per second
GET: 121506.68 requests per second
INCR: 121359.23 requests per second
LPUSH: 121654.50 requests per second
LPOP: 121951.22 requests per second
SADD: 122399.02 requests per second
SPOP: 121359.23 requests per second
LPUSH (again, in order to bench LRANGE): 121506.68 requests per second
LRANGE (first 100 elements): 76511.09 requests per second
LRANGE (first 300 elements): 37216.23 requests per second
LRANGE (first 450 elements): 26881.72 requests per second
LRANGE (first 600 elements): 21537.80 requests per second

这是另外的环境数据
E5620

[root@OS90 ~]# redis-benchmark -n 100000 -q
PING (inline): 56179.78 requests per second
PING: 62111.80 requests per second
MSET (10 keys): 43196.54 requests per second
SET: 59952.04 requests per second
GET: 60679.61 requests per second
INCR: 61387.36 requests per second
LPUSH: 52273.91 requests per second
LPOP: 62034.74 requests per second
SADD: 61500.61 requests per second
SPOP: 62034.74 requests per second
LPUSH (again, in order to bench LRANGE): 62500.00 requests per second
LRANGE (first 100 elements): 45187.53 requests per second
LRANGE (first 300 elements): 28530.67 requests per second
LRANGE (first 450 elements): 21561.02 requests per second
LRANGE (first 600 elements): 17577.78 requests per second

升级X3470服务器内核到2.6.35.4，redis性能还有提升

[root@l53-64 ~]# redis-benchmark -n 100000 -q
PING (inline): 144927.53 requests per second
PING: 143678.17 requests per second
MSET (10 keys): 79491.26 requests per second
SET: 147710.48 requests per second
GET: 147058.83 requests per second
INCR: 149700.61 requests per second
LPUSH: 145772.59 requests per second
LPOP: 142247.52 requests per second
SADD: 142045.45 requests per second
SPOP: 140252.45 requests per second
LPUSH (again, in order to bench LRANGE): 142857.14 requests per second
LRANGE (first 100 elements): 73964.50 requests per second
LRANGE (first 300 elements): 35561.88 requests per second
LRANGE (first 450 elements): 26539.28 requests per second
LRANGE (first 600 elements): 21235.93 requests per second

有机器测试了一下i7-2600在ubuntu11.04 server(2.6.38.0)下redis的表现

# redis-benchmark -n 100000 -q       
PING (inline): 210084.03 requests per second
PING: 215053.77 requests per second
MSET (10 keys): 120048.02 requests per second
SET: 216919.73 requests per second
GET: 220750.55 requests per second
INCR: 222717.16 requests per second
LPUSH: 222222.23 requests per second
LPOP: 220264.31 requests per second
SADD: 216450.20 requests per second
SPOP: 213219.61 requests per second
LPUSH (again, in order to bench LRANGE): 219780.22 requests per second
LRANGE (first 100 elements): 108813.92 requests per second
LRANGE (first 300 elements): 48379.30 requests per second
LRANGE (first 450 elements): 34542.32 requests per second
LRANGE (first 600 elements): 27382.26 requests per second

sandi bridge的单线程能力还是很强的，单路服务器使用E3-1200系列是个不错选择