# Logstash consumes persistent queue size when no events stored
**URL:** https://discuss.elastic.co/t/logstash-consumes-persistent-queue-size-when-no-events-stored/329311
**Category:** Logstash
**Created:** [April 4, 2023, 11:03am UTC](https://discuss.elastic.co/t/logstash-consumes-persistent-queue-size-when-no-events-stored/329311 "2023-04-04T11:03:25Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@ferdose\_shaik](https://discuss.elastic.co/u/ferdose_shaik)
#### Post date: [April 4, 2023, 11:03am UTC](https://discuss.elastic.co/t/logstash-consumes-persistent-queue-size-when-no-events-stored/329311/1 "2023-04-04T11:03:25Z")
Hi,
We are using persistent queue in Logstash to store the events when output is blocked. Please refer to the following configuration.
```auto
- pipeline.id: syslog
queue.type: persisted
queue.max_bytes: 128mb
path.config: "/opt/logstash/resource/syslog_output.conf"
```
We observed Logstash is consuming queue\_size\_in\_bytes even when there are no events stored in the queue.
```auto
"queue" : {
"type" : "persisted",
"capacity" : {
"page_capacity_in_bytes" : 67108864,
"max_queue_size_in_bytes" : 134217728,
"max_unread_events" : 0,
"queue_size_in_bytes" : 16113344
},
"data" : {
"free_space_in_bytes" : 48755580928,
"path" : "/opt/logstash/data/queue/syslog",
"storage_type" : "xfs"
},
"events" : 0,
"events_count" : 0,
"queue_size_in_bytes" : 16113344,
"max_queue_size_in_bytes" : 134217728
},
```
Could you please help to understand why Logstash consuming queue\_size\_in\_bytes when no events stored in the queue.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [May 2, 2023, 11:04am UTC](https://discuss.elastic.co/t/logstash-consumes-persistent-queue-size-when-no-events-stored/329311/2 "2023-05-02T11:04:18Z")
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