所有分配的 Tarantool 2.3 space memtx 都被占用了

今天，memxt tarantool 的分配空间已经超出了 - memtx_memory = 5GB，RAM 让 RAM 非常忙碌，超过 4GB 的内存释放后重新启动 tarantool。 RAM 可能会出现堵塞问题？这可能与哪些设置有关？

box.slab.info()
---
- items_size: 1308568936
  items_used_ratio: 91.21%
  quota_size: 5737418240
  quota_used_ratio: 13.44%
  arena_used_ratio: 89.2%
  items_used: 1193572600
  quota_used: 1442840576
  arena_size: 1442840576
  arena_used: 1287551224

box.info()
---
- version: 2.3.2-26-g38e825b
  id: 1
  ro: false
  uuid: d9cb7d78-1277-4f83-91dd-9372a763aafa
  package: Tarantool
  cluster:
    uuid: b6c32d07-b448-47df-8967-40461a858c6d
  replication:
    1:
      id: 1
      uuid: d9cb7d78-1277-4f83-91dd-9372a763aafa
      lsn: 89759968433
    2:
      id: 2
      uuid: 77557306-8e7e-4bab-adb1-9737186bd3fa
      lsn: 9
    3:
      id: 3
      uuid: 28bae7dd-26a8-47a7-8587-5c1479c62311
      lsn: 0
    4:
      id: 4
      uuid: 6a09c191-c987-43a4-8e69-51da10cc3ff2
      lsn: 0
  signature: 89759968442
  status: running
  vinyl: []
  uptime: 606297
  lsn: 89759968433
  sql: []
  gc: []
  pid: 32274
  memory: []
  vclock: {2: 9, 1: 89759968433}

cat /etc/tarantool/instances.available/my_app.lua

...
memtx_memory = 5 * 1024 * 1024 * 1024,
...

Tarantool vesrion 2.3.2, OS CentOs 7

https://i.stack.imgur.com/onV44.png