# Kibana stack monitoring graphs is not clear **URL:** \ **Category:** Kibana\ **Created:** [May 1, 2021, 3:30pm UTC](https://discuss.elastic.co/t/kibana-stack-monitoring-graphs-is-not-clear/271875 "2021-05-01T15:30:17Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![fatihtekin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/fatihtekin/32/88069_2.png) [@fatihtekin](https://discuss.elastic.co/u/fatihtekin)\ **Post date:** [May 1, 2021, 3:30pm UTC](https://discuss.elastic.co/t/kibana-stack-monitoring-graphs-is-not-clear/271875/1 "2021-05-01T15:30:17Z")
I upgraded elasticsearch and kibana version from 7.5 to 7.12. I have seen unclear stack monitoring graphs after the upgrade process. I don't understand why it happens. I added screenshots. Can you help me with why it happens? ![kibana1](https://us1.discourse-cdn.com/elastic/original/3X/9/5/95eb90c7f372e43d90c344a38829e3e0bf282a98.jpeg) ![kibana2](https://us1.discourse-cdn.com/elastic/original/3X/0/1/0178cbc4788ab43b71db576e95b53ad079237449.jpeg) ---
**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:** [May 2, 2021, 9:45pm UTC](https://discuss.elastic.co/t/kibana-stack-monitoring-graphs-is-not-clear/271875/2 "2021-05-02T21:45:45Z")
Welcome to our community! 😃 What do you mean by unclear exactly? ---
**Author:** ![fatihtekin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/fatihtekin/32/88069_2.png) [@fatihtekin](https://discuss.elastic.co/u/fatihtekin)\ **Post date:** [May 3, 2021, 6:08pm UTC](https://discuss.elastic.co/t/kibana-stack-monitoring-graphs-is-not-clear/271875/3 "2021-05-03T18:08:31Z")
Thank you for your message 😀 I mean, the graph line is not continuous, so there is no value at certain intervals or moments.( i.e between 18:16 - 18:18, 18:19 - 18:20, and 18:24 in my shared graphs. ) ---
**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:** [May 3, 2021, 10:45pm UTC](https://discuss.elastic.co/t/kibana-stack-monitoring-graphs-is-not-clear/271875/4 "2021-05-03T22:45:40Z")
Ok, just wanted to make sure that is what you were querying. Is there anything in your Elasticsearch logs at those times? ---
**Author:** ![fatihtekin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/fatihtekin/32/88069_2.png) [@fatihtekin](https://discuss.elastic.co/u/fatihtekin)\ **Post date:** [May 4, 2021, 9:31am UTC](https://discuss.elastic.co/t/kibana-stack-monitoring-graphs-is-not-clear/271875/5 "2021-05-04T09:31:58Z")
I couldn't see any error/fatal message in elasticsearch logs, but I saw the following errors in kibana logs. I don't know if it has something to do with that. Kibana shutdown once in a while, but elasticsearch doesn't. FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory 1: 0xa04200 node::Abort() [/home/cassadm/kibana/bin/../node/bin/node] 2: 0x94e4e9 node::FatalError(char const\*, char const\*) [/home/cassadm/kibana/bin/../node/bin/node] 3: 0xb7978e v8::Utils::ReportOOMFailure(v8::internal::Isolate\*, char const\*, bool) [/home/cassadm/kibana/bin/../node/bin/node] 4: 0xb79b07 v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate\*, char const\*, bool) [/home/cassadm/kibana/bin/../node/bin/node] ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [June 1, 2021, 9:32am UTC](https://discuss.elastic.co/t/kibana-stack-monitoring-graphs-is-not-clear/271875/6 "2021-06-01T09:32:47Z")
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