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 

[root@Architect redis-1.2.6]# redis-benchmark -h localhost -p 6379 -c 100 -n 100000
====== PING ======
  10001 requests completed in 0.41 seconds
  50 parallel clients
  3 bytes payload
  keep alive: 1

0.01% <= 0 milliseconds
23.09% <= 1 milliseconds
85.82% <= 2 milliseconds
95.60% <= 3 milliseconds
97.20% <= 4 milliseconds
97.96% <= 5 milliseconds
98.83% <= 6 milliseconds
99.41% <= 7 milliseconds
99.70% <= 8 milliseconds
99.99% <= 9 milliseconds
100.00% <= 12 milliseconds
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 

[root@Architect redis-1.2.6]# redis-cli -h localhost -p 6380 monitor
+OK
+1289800615.808225 "monitor"
+1289800615.839079 "GET" "name"
+1289800615.853694 "PING"
+1289800615.853783 "PING"
+1289800615.854646 "PING"
+1289800615.854974 "PING"
+1289800615.857693 "PING"
+1289800615.866862 "PING"
+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 

[root@Architect redis-1.2.6]# redis-cli -h localhost -p 6380 info
redis_version:2.0.4
redis_git_sha1:00000000
redis_git_dirty:0
arch_bits:32
multiplexing_api:epoll
process_id:21990
uptime_in_seconds:490580
uptime_in_days:5
connected_clients:103
connected_slaves:0
blocked_clients:0
used_memory:4453240
used_memory_human:4.25M
changes_since_last_save:200
bgsave_in_progress:0
last_save_time:1290394640
bgrewriteaof_in_progress:0
total_connections_received:809
total_commands_processed:44094018
expired_keys:0
hash_max_zipmap_entries:64
hash_max_zipmap_value:512
pubsub_channels:0
pubsub_patterns:0
vm_enabled:0
role:slave
master_host:localhost
master_port:6379
master_link_status:up
master_last_io_seconds_ago:18
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 

[root@Architect redis-1.2.6]# redis-stat port 6380 overview
 ------- data ------ ------------ load ----------------------------- - childs -
 keys      used-mem  clients   requests            connections
 1319      5.37M     103       44108021 (+44108021) 810
 1319      5.38M     103       44108124 (+103)     810
 1319      5.38M     103       44108225 (+101)     810
 1319      5.39M     103       44108326 (+101)     810
 1319      5.40M     103       44108427 (+101)     810
 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 

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