# Run multiple logstash instances vs. one instance?
**URL:** https://discuss.elastic.co/t/run-multiple-logstash-instances-vs-one-instance/43141
**Category:** Logstash
**Created:** [March 1, 2016, 5:49pm UTC](https://discuss.elastic.co/t/run-multiple-logstash-instances-vs-one-instance/43141 "2016-03-01T17:49:08Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@anhlqn](https://discuss.elastic.co/u/anhlqn)
#### Post date: [March 1, 2016, 5:49pm UTC](https://discuss.elastic.co/t/run-multiple-logstash-instances-vs-one-instance/43141/1 "2016-03-01T17:49:08Z")
Hi All,
I have the following Logstash config
```auto
input {
# Receive logs
tcp {
port => 5544
type => "iis"
}
tcp {
port => 5545
type => "perfmon"
}
}
filter {}
output {
if [type] == "iis" {
elasticsearch {
hosts => ["192.168.1.10:9200"]
index => "iis-%{+YYYY.MM.dd}"
}
if [type] == "perfmon" {
elasticsearch {
hosts => ["192.168.1.10:9200"]
index => "perfmon-%{+YYYY.MM.dd}"
}
}
```
My question is that will using if to check types and route data to different indexes significantly affect throughput?
Should I instead run 2 Logstash instances -one listens on 5544 for iis, and the other listens on 5545 for perfmon?
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [March 1, 2016, 9:14pm UTC](https://discuss.elastic.co/t/run-multiple-logstash-instances-vs-one-instance/43141/2 "2016-03-01T21:14:37Z")
What sort of rates are you expecting to be processing?
---
### Author:  [@anhlqn](https://discuss.elastic.co/u/anhlqn)
#### Post date: [March 1, 2016, 10:30pm UTC](https://discuss.elastic.co/t/run-multiple-logstash-instances-vs-one-instance/43141/3 "2016-03-01T22:30:45Z")
Hi Mark,
At least 5000 messages per second.
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [March 1, 2016, 11:53pm UTC](https://discuss.elastic.co/t/run-multiple-logstash-instances-vs-one-instance/43141/4 "2016-03-01T23:53:56Z")
You should be able to handle that with a single instance.
---
### Author:  [@anhlqn](https://discuss.elastic.co/u/anhlqn)
#### Post date: [March 1, 2016, 11:55pm UTC](https://discuss.elastic.co/t/run-multiple-logstash-instances-vs-one-instance/43141/5 "2016-03-01T23:55:25Z")
Thanks, I'll try with one instance.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 5:08am UTC](https://discuss.elastic.co/t/run-multiple-logstash-instances-vs-one-instance/43141/6 "2017-07-06T05:08:58Z")