# In: Redis, Out: Redis very slow since upgrade vom LS from 1.5 to 2.3.0

**URL:** <https://discuss.elastic.co/t/in-redis-out-redis-very-slow-since-upgrade-vom-ls-from-1-5-to-2-3-0/46539>\
**Category:** Logstash\
**Created:** [April 6, 2016, 2:02pm UTC](https://discuss.elastic.co/t/in-redis-out-redis-very-slow-since-upgrade-vom-ls-from-1-5-to-2-3-0/46539 "2016-04-06T14:02:51Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Robert\_Walter](https://avatars.discourse-cdn.com/v4/letter/r/71e660/32.png) [@Robert\_Walter](https://discuss.elastic.co/u/Robert_Walter)\
**Post date:** [April 6, 2016, 2:02pm UTC](https://discuss.elastic.co/t/in-redis-out-redis-very-slow-since-upgrade-vom-ls-from-1-5-to-2-3-0/46539/1 "2016-04-06T14:02:51Z")

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Hi,

i'm using logstash to transport logs from redis to redis.

`input {  
redis {  
host =\> "redis1.int.local"  
port =\> "6381"  
data\_type =\> "list"  
threads =\> 50  
key =\> "logs"  
type =\> "logs"  
}  
}

output {  
if [type] == "logs" {  
redis {  
host =\> "redis2.int.local"  
port =\> "6379"  
data\_type =\> "list"  
key =\> "logs"  
workers =\> 50  
}  
}

}`

With logstash 1.5 i could transfer \>100.000 Messages per Minute between the redis nodes.  
After the upgrade to 2.3 i'm not getting more than 1.000 Messsages per Minute.

I already played with the -w (1-250) and -b (1-8000) parameters, but without success.

The current parameters are:  
`LS_OPTS="-w 150 -b 100" LS_HEAP_SIZE="6g" LS_OPEN_FILES=163840 KILL_ON_STOP_TIMEOUT=1`  
All other parameters are the defaults from the logstash debian package.

Some additional information:  
Network speed between redis1, redis2 and logstash node: 1Gbit  
Redis Version: 3.0.7

Please help me to find the problem.

Thank you very much.

Robert

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 5:03am UTC](https://discuss.elastic.co/t/in-redis-out-redis-very-slow-since-upgrade-vom-ls-from-1-5-to-2-3-0/46539/2 "2017-07-06T05:03:28Z")

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