# Logstash TCP input pipeline performance issues

**URL:** https://discuss.elastic.co/t/logstash-tcp-input-pipeline-performance-issues/328006
**Category:** Logstash
**Created:** [March 18, 2023, 9:03pm UTC](https://discuss.elastic.co/t/logstash-tcp-input-pipeline-performance-issues/328006 "2023-03-18T21:03:24Z")
**Posts on this page:** 1
**Showing post:** 8

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### Author: ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [March 19, 2023, 4:46am UTC](https://discuss.elastic.co/t/logstash-tcp-input-pipeline-performance-issues/328006/8 "2023-03-19T04:46:43Z")

</div>

> [@mread830](#):
>
> stats

The problem is in the http output of the "env\_tcp" pipeline. If you go through your stats and look at the "events" entries the only one that has an imbalance is

```
  "events": {
    "in": 1983728,
    "filtered": 1891560,
    "out": 1891560,
....
  "pipelines": {
....
"env_tcp": {
  "events": {
    "queue_push_duration_in_millis": 40873948,
    "duration_in_millis": 151879287,
    "filtered": 1713729,
    "out": 1713729,
    "in": 1805897
  },

```

There are 30,000+ events going in and not coming out. Check Guy's post [here](https://discuss.elastic.co/t/measuring-the-taking-time/113900/4). This is not a slow input.

```
    "outputs": [ ....
      {
        "id": "c685636696572b6d74ea68ff726974823e22f806987cff4044310f1b953496a5",
        "name": "http",
        "events": {
          "duration_in_millis": 151778979,
          "out": 1713729,
          "in": 1759809
        }
      }
    ]
  },

```

Again, there are tens of thousands of event reaching the http output and not leaving. It is taking nearly a tenth of a second per event. It could be that encoding the events is really expensive, but I would concur with Leandro that the first place to look is the http destination.

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