慢查詢日志
1氮唯、設置慢查詢配置
redis>config set slowlog-log-slower-than 0（單位微妙荧库，默認為10000涩搓，10ms）
redis>config set slowlog-max-len 5
2、獲取慢查詢日志
redis>slowlog get
實例：
127.0.0.1:7001> config get slowlog-log-slower-than
1) "slowlog-log-slower-than"
2) "10000"
127.0.0.1:7001> CONFIG get slowlog-max-len
1) "slowlog-max-len"
2) "128"
127.0.0.1:7001> slowlog get
1) 1) (integer) 64
? ? 2) (integer) 1571645922
? ? 3) (integer) 735617
? ? 4) 1) "info"
2) 1) (integer) 63
? ? 2) (integer) 1571328003
? ? 3) (integer) 12295
? ? 4) 1) "CLUSTER"
? ? ? 2) "SLOTS"
監(jiān)視器
1筝尾、127.0.0.1:7001> monitor
OK
1571645940.484132 [0 127.0.0.1:47386] "SMEMBERS" "30_MSG_GRP_All"
1571645943.485235 [0 127.0.0.1:47386] "SMEMBERS" "30_MSG_GRP_All"
1571645946.485290 [0 127.0.0.1:47386] "SMEMBERS" "30_MSG_GRP_All"
1571645949.486071 [0 127.0.0.1:47386] "SMEMBERS" "30_MSG_GRP_All"
1571645952.486815 [0 127.0.0.1:47386] "SMEMBERS" "30_MSG_GRP_All"
1571645955.487559 [0 127.0.0.1:47386] "SMEMBERS" "30_MSG_GRP_All"
1571645956.224340 [0 127.0.0.1:47386] "PING"
1571645958.488116 [0 127.0.0.1:47386] "SMEMBERS" "30_MSG_GRP_All"
1571645961.489261 [0 127.0.0.1:47386] "SMEMBERS" "30_MSG_GRP_All"
1571645964.489657 [0 127.0.0.1:47386] "SMEMBERS" "30_MSG_GRP_All"
1571645967.490261 [0 127.0.0.1:47386] "SMEMBERS" "30_MSG_GRP_All"
1571645970.490993 [0 127.0.0.1:47386] "SMEMBERS" "30_MSG_GRP_All"
1571645973.491732 [0 127.0.0.1:47386] "SMEMBERS" "30_MSG_GRP_All"
查看性能
1界弧、 /usr/local/bin/redis-cli -p 6380 info commandstats
# Commandstats
cmdstat_set:calls=4350591,usec=29221503,usec_per_call=6.72
cmdstat_strlen:calls=2,usec=13,usec_per_call=6.50
cmdstat_lpush:calls=1131624,usec=15818423,usec_per_call=13.98
cmdstat_rpop:calls=566119935,usec=4582656127,usec_per_call=8.09
cmdstat_llen:calls=16,usec=149,usec_per_call=9.31
cmdstat_mset:calls=2549897,usec=417068867,usec_per_call=163.56
cmdstat_randomkey:calls=3,usec=12542,usec_per_call=4180.67
cmdstat_select:calls=268,usec=3141,usec_per_call=11.72
cmdstat_keys:calls=4,usec=3328004,usec_per_call=832001.00
cmdstat_scan:calls=4,usec=1163,usec_per_call=290.75
cmdstat_dbsize:calls=1,usec=10,usec_per_call=10.00
cmdstat_auth:calls=11,usec=131,usec_per_call=11.91
cmdstat_ping:calls=1171948,usec=9749676,usec_per_call=8.32
cmdstat_type:calls=5,usec=40,usec_per_call=8.00
cmdstat_flushdb:calls=20,usec=3971069,usec_per_call=198553.45
cmdstat_flushall:calls=1,usec=3862302,usec_per_call=3862302.00
cmdstat_info:calls=22,usec=466266,usec_per_call=21193.91
cmdstat_monitor:calls=11,usec=118,usec_per_call=10.73
cmdstat_subscribe:calls=1,usec=36,usec_per_call=36.00
cmdstat_publish:calls=2550509,usec=11056275,usec_per_call=4.33
cmdstat_client:calls=1,usec=147895,usec_per_call=147895.00
cmdstat_slowlog:calls=1,usec=10178,usec_per_call=10178.00
cmdstat_command:calls=1,usec=1795,usec_per_call=1795.00
2凡蜻、/usr/local/bin/redis-cli -p 6380 -a 密碼 --stat
------- data ------ --------------------- load -------------------- - child -
keys? ? ? mem? ? ? clients blocked requests? ? ? ? ? ? connections? ? ? ? ?
1558655? ? 255.93M? 31? ? ? 0? ? ? 577880181 (+0)? ? ? 408019? ? ?
1558655? ? 256.03M? 31? ? ? 0? ? ? 577880317 (+136)? ? 408027? ? ?
1558655? ? 256.17M? 31? ? ? 0? ? ? 577880448 (+131)? ? 408034? ? ?
1558655? ? 256.05M? 31? ? ? 0? ? ? 577880576 (+128)? ? 408039? ? ?
1558655? ? 256.07M? 31? ? ? 0? ? ? 577880705 (+129)? ? 408045? ? ?
1558655? ? 256.12M? 31? ? ? 0? ? ? 577880831 (+126)? ? 408048?
3搭综、/usr/local/bin/redis-cli -p 6380 -a 密碼 --bigkeys
# Scanning the entire keyspace to find biggest keys as well as
# average sizes per key type.? You can use -i 0.1 to sleep 0.1 sec
# per 100 SCAN commands (not usually needed).
[00.00%] Biggest string found so far 'Market_16' with 51881 bytes
[00.00%] Biggest list? found so far 'EXPIRED_MESSAGE_TOTALCLEAN' with 923 items
[00.00%] Biggest list? found so far 'PUSH_RAW_MSG_BUFFER_10' with 38833 items
-------- summary -------
Sampled 5 keys in the keyspace!
Total key length in bytes is 90 (avg len 18.00)
Biggest string found 'Market_16' has 51881 bytes
Biggest? list found 'PUSH_RAW_MSG_BUFFER_10' has 38833 items
2 strings with 73009 bytes (40.00% of keys, avg size 36504.50)
3 lists with 39758 items (60.00% of keys, avg size 13252.67)
0 sets with 0 members (00.00% of keys, avg size 0.00)
0 hashs with 0 fields (00.00% of keys, avg size 0.00)
0 zsets with 0 members (00.00% of keys, avg size 0.00)
參考資料
https://www.cnblogs.com/BigJunOba/p/9136099.html?一篇排查redis阻塞問題的思路
