# High CPU Utilization but low memory utilization? **URL:** \ **Category:** Logstash\ **Created:** [March 28, 2017, 3:06am UTC](https://discuss.elastic.co/t/high-cpu-utilization-but-low-memory-utilization/80226 "2017-03-28T03:06:59Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Allie\_Yang](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/allie_yang/32/16538_2.png) [@Allie\_Yang](https://discuss.elastic.co/u/Allie_Yang)\ **Post date:** [March 28, 2017, 3:06am UTC](https://discuss.elastic.co/t/high-cpu-utilization-but-low-memory-utilization/80226/1 "2017-03-28T03:06:59Z")
I am running large file with logstash. I see from command top that i have ~100% CPU utilization, but only 5% memory utilization. What ways are there and Should I increase mem utilization? ---
**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\ **Post date:** [March 28, 2017, 6:23am UTC](https://discuss.elastic.co/t/high-cpu-utilization-but-low-memory-utilization/80226/2 "2017-03-28T06:23:40Z")
> I am running large file with logstash. I see from command top that i have ~100% CPU utilization, Right, and that's good. > but only 5% memory utilization. You're talking about the "%MEM" column for the Logstash process? You seem to think that it's a problem that Logstash doesn't use more than 5% of the system's memory. Why? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [April 25, 2017, 6:23am UTC](https://discuss.elastic.co/t/high-cpu-utilization-but-low-memory-utilization/80226/3 "2017-04-25T06:23:46Z")
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