# Logging freezes every hour **URL:** \ **Category:** Logstash\ **Created:** [December 23, 2015, 3:43pm UTC](https://discuss.elastic.co/t/logging-freezes-every-hour/37868 "2015-12-23T15:43:06Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Kevin\_Ross](https://avatars.discourse-cdn.com/v4/letter/k/9de053/32.png) [@Kevin\_Ross](https://discuss.elastic.co/u/Kevin_Ross)\ **Post date:** [December 23, 2015, 3:43pm UTC](https://discuss.elastic.co/t/logging-freezes-every-hour/37868/1 "2015-12-23T15:43:07Z")
Hi, I have noticed in Kibana that every hour nearly on the hour logs stop going into elasticsearch for about 1 minute and then it seems to perhaps to a batch update as they all seem to find they way in as far as I can tell. There is no jobs I run hourly which may explain it and both logstash and elasticsearch are running ok. I am running elasticsearch 2.1.1 and I don't recall seeing this before although it may be memory. I have a suspicion it is perhaps due to logstash memory as before there was an issue with it before it got set to 1GB where I would occasionally stop logging for hours - especially if using geoip. I have increased memory to 2GB and have 4 workers running. I am wondering if there is any ideas of what it may be such as something logstash or elasticsearch does every hour which may explain it & also how to test this. Also how to I look at the logstash usage such as heap usage because now it does not connect as a node these stats seem to be invisble to me and I can't see this aspect of my logging? Thank you very much ---
**Author:** ![Kevin\_Ross](https://avatars.discourse-cdn.com/v4/letter/k/9de053/32.png) [@Kevin\_Ross](https://discuss.elastic.co/u/Kevin_Ross)\ **Post date:** [December 23, 2015, 3:46pm UTC](https://discuss.elastic.co/t/logging-freezes-every-hour/37868/2 "2015-12-23T15:46:33Z")
oh it may be useful to note the ELK stack is running on 1 box. 64GB RAM using 50% heap (for elasticsearch) which is set at 30GB and general RAM, CPU etc seems fine. ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [December 23, 2015, 10:26pm UTC](https://discuss.elastic.co/t/logging-freezes-every-hour/37868/3 "2015-12-23T22:26:14Z")
Try turning on GC logging for LS and see what's there? ---
**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, 5:17am UTC](https://discuss.elastic.co/t/logging-freezes-every-hour/37868/4 "2017-07-06T05:17:25Z")
Closed on July 6, 2017, 5:17am UTC