我们的数据大小只有2g多一些(使用info memory查看),
但是codis-server进程却占了机器内存的30%,(32g机器),这会是什么问题呢?
下面是节点的info命令结果:

#Server
redis_version:3.2.12
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:7dc471ebfda27598
redis_mode:standalone
os:Linux 3.10.0-693.el7.x86_64 x86_64
arch_bits:64
multiplexing_api:epoll
gcc_version:4.8.5
process_id:12363
run_id:3422d9ceaa98202344c117122fc1422da0d60f7d
tcp_port:6379
uptime_in_seconds:15409432
uptime_in_days:178
hz:10
lru_clock:7367223
executable:/app/tools/codis/codis-server
config_file:/app/tools/codis/authConf/6379.conf

# Clients
connected_clients:144
client_longest_output_list:0
client_biggest_input_buf:0
blocked_clients:0

# Memory
used_memory:2251326656
used_memory_human:2.10G
used_memory_rss:10814910464
used_memory_rss_human:10.07G
used_memory_peak:8594099424
used_memory_peak_human:8.00G
total_system_memory:33547333632
total_system_memory_human:31.24G
used_memory_lua:37888
used_memory_lua_human:37.00K
maxmemory:8589934592
maxmemory_human:8.00G
maxmemory_policy:volatile-ttl
mem_fragmentation_ratio:4.80
mem_allocator:jemalloc-4.0.3

# Persistence
loading:0
rdb_changes_since_last_save:20737757
rdb_bgsave_in_progress:0
rdb_last_save_time:1583493831
rdb_last_bgsave_status:err
rdb_last_bgsave_time_sec:36
rdb_current_bgsave_time_sec:-1
aof_enabled:0
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok

# Stats
total_connections_received:79217857
total_commands_processed:1301898717
instantaneous_ops_per_sec:372
total_net_input_bytes:101606593682
total_net_output_bytes:187680449370
instantaneous_input_kbps:19.41
instantaneous_output_kbps:27.37
rejected_connections:0
sync_full:7
sync_partial_ok:0
sync_partial_err:2
expired_keys:24681624
evicted_keys:1403355
keyspace_hits:103551363
keyspace_misses:16627377
pubsub_channels:1
pubsub_patterns:0
latest_fork_usec:120
migrate_cached_sockets:0

# Replication
role:master
connected_slaves:1
slave0:ip=192.168.181.143,port=6380,state=online,offset=68621516199,lag=1
master_repl_offset:68621519950
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:68620471375
repl_backlog_histlen:1048576

# CPU
used_cpu_sys:48071.54
used_cpu_user:28025.32
used_cpu_sys_children:141591.36
used_cpu_user_children:2457320.50

# Cluster
cluster_enabled:0

# Keyspace
db0:keys=3572150,expires=2429150,avg_ttl=157812492