redis状态与性能监控

1、redis-benchmark 
redis基准信息，redis服务器性能检测 

redis-benchmark -h localhost -p 6379 -c 100 -n 100000 
100个并发连接，100000个请求，检测host为localhost 端口为6379的redis服务器性能 

1. [root@Architect redis-1.2.6]# redis-benchmark -h localhost -p 6379 -c 100 -n 100000  
2. ====== PING ======  
3.   10001 requests completed in 0.41 seconds  
4.   50 parallel clients  
5.   3 bytes payload  
6.   keep alive: 1  
7.   
8. 0.01% <= 0 milliseconds  
9. 23.09% <= 1 milliseconds  
10. 85.82% <= 2 milliseconds  
11. 95.60% <= 3 milliseconds  
12. 97.20% <= 4 milliseconds  
13. 97.96% <= 5 milliseconds  
14. 98.83% <= 6 milliseconds  
15. 99.41% <= 7 milliseconds  
16. 99.70% <= 8 milliseconds  
17. 99.99% <= 9 milliseconds  
18. 100.00% <= 12 milliseconds  
19. 24274.27 requests per second  

2、redis-cli 

redis-cli -h localhost -p 6380 monitor 
Dump all the received requests in real time; 
监控host为localhost，端口为6380，redis的连接及读写操作 

1. [root@Architect redis-1.2.6]# redis-cli -h localhost -p 6380 monitor  
2. +OK  
3. +1289800615.808225 "monitor"  
4. +1289800615.839079 "GET" "name"  
5. +1289800615.853694 "PING"  
6. +1289800615.853783 "PING"  
7. +1289800615.854646 "PING"  
8. +1289800615.854974 "PING"  
9. +1289800615.857693 "PING"  
10. +1289800615.866862 "PING"  
11. +1289800615.871944 "PING"  

redis-cli -h localhost -p 6380 info 
Provide information and statistics about the server ; 
提供host为localhost，端口为6380，redis服务的统计信息 

1. [root@Architect redis-1.2.6]# redis-cli -h localhost -p 6380 info  
2. redis_version:2.0.4  
3. redis_git_sha1:00000000  
4. redis_git_dirty:0  
5. arch_bits:32  
6. multiplexing_api:epoll  
7. process_id:21990  
8. uptime_in_seconds:490580  
9. uptime_in_days:5  
10. connected_clients:103  
11. connected_slaves:0  
12. blocked_clients:0  
13. used_memory:4453240  
14. used_memory_human:4.25M  
15. changes_since_last_save:200  
16. bgsave_in_progress:0  
17. last_save_time:1290394640  
18. bgrewriteaof_in_progress:0  
19. total_connections_received:809  
20. total_commands_processed:44094018  
21. expired_keys:0  
22. hash_max_zipmap_entries:64  
23. hash_max_zipmap_value:512  
24. pubsub_channels:0  
25. pubsub_patterns:0  
26. vm_enabled:0  
27. role:slave  
28. master_host:localhost  
29. master_port:6379  
30. master_link_status:up  
31. master_last_io_seconds_ago:18  
32. db0:keys=1319,expires=0  

3、redis-stat 

redis-stat host localhost port 6380 overview 
Print general information about a Redis instance; 
实时打印出host为localhost，端口为6380，redis实例的总体信息 

1. [root@Architect redis-1.2.6]# redis-stat port 6380 overview  
2.  ------- data ------ ------------ load ----------------------------- - childs -  
3.  keys      used-mem  clients   requests            connections  
4.  1319      5.37M     103       44108021 (+44108021) 810                 
5.  1319      5.38M     103       44108124 (+103)     810                 
6.  1319      5.38M     103       44108225 (+101)     810                 
7.  1319      5.39M     103       44108326 (+101)     810                 
8.  1319      5.40M     103       44108427 (+101)     810                 
9.  1319      5.41M     103       44108528 (+101)     810                 

redis-stat host localhost port 6380 overview 
Measure Redis server latency; 
输出host为localhost，端口为6380，redis服务中每个请求的响应时长 

1. [root@Architect redis-1.2.6]# redis-stat port 6380 latency  
2. 1: 0.16 ms  
3. 2: 0.11 ms  
4. 3: 0.15 ms  
5. 4: 0.11 ms  
6. 5: 0.18 ms  
7. 6: 0.14 ms