# Meaning of different FS IO information from the Cluster stats? **URL:** \ **Category:** Elasticsearch\ **Created:** [December 23, 2013, 5:24pm UTC](https://discuss.elastic.co/t/meaning-of-different-fs-io-information-from-the-cluster-stats/15001 "2013-12-23T17:24:05Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![search](https://avatars.discourse-cdn.com/v4/letter/s/dfb087/32.png) [@search](https://discuss.elastic.co/u/search)\ **Post date:** [December 23, 2013, 5:24pm UTC](https://discuss.elastic.co/t/meaning-of-different-fs-io-information-from-the-cluster-stats/15001/1 "2013-12-23T17:24:05Z")
When I query for my cluster stats (\_cluster/stats), I got the following for Disk IO. I am not sure how to read this information. Can some one explain how to find whether I have a disk IO issues are not based on the following (if possible details of each key) "fs" : { "total" : "16672.3gb", "total\_in\_bytes" : 17901746774016, "free" : "16310.9gb", "free\_in\_bytes" : 17513719939072, "available" : "16141.5gb", "available\_in\_bytes" : 17331848867840, "disk\_reads" : 132502, "disk\_writes" : 1162416974, "disk\_io\_op" : 1162549476, "disk\_read\_size" : "2.1gb", "disk\_read\_size\_in\_bytes" : 2261677056, "disk\_write\_size" : "24750.9gb", "disk\_write\_size\_in\_bytes" : 26576166256640, "disk\_io\_size" : "24753gb", "disk\_io\_size\_in\_bytes" : 26578427933696, "disk\_queue" : "1.7", "disk\_service\_time" : "9.8" }, Thanks. -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/97d08f73-dc55-4c44-8fa2-42688952e06d%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/97d08f73-dc55-4c44-8fa2-42688952e06d%40googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**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, 2013, 10:17pm UTC](https://discuss.elastic.co/t/meaning-of-different-fs-io-information-from-the-cluster-stats/15001/2 "2013-12-23T22:17:42Z")
These are stats from a point in time, so they don't really provide any context. Install the elastichq plugin, it'll graph these data points and give you some context to make that decision. Regards, Mark Walkom Infrastructure Engineer Campaign Monitor email: [markw@campaignmonitor.com](mailto:markw@campaignmonitor.com) web: [www.campaignmonitor.com](http://www.campaignmonitor.com) On 24 December 2013 04:24, Search User [feedworks@gmail.com](mailto:feedworks@gmail.com) wrote: > When I query for my cluster stats (\_cluster/stats), I got the following > for Disk IO. I am not sure how to read this information. Can some one > explain how to find whether I have a disk IO issues are not based on the > following (if possible details of each key) > > "fs" : { > "total" : "16672.3gb", > "total\_in\_bytes" : 17901746774016, > "free" : "16310.9gb", > "free\_in\_bytes" : 17513719939072, > "available" : "16141.5gb", > "available\_in\_bytes" : 17331848867840, > "disk\_reads" : 132502, > "disk\_writes" : 1162416974, > "disk\_io\_op" : 1162549476, > "disk\_read\_size" : "2.1gb", > "disk\_read\_size\_in\_bytes" : 2261677056, > "disk\_write\_size" : "24750.9gb", > "disk\_write\_size\_in\_bytes" : 26576166256640, > "disk\_io\_size" : "24753gb", > "disk\_io\_size\_in\_bytes" : 26578427933696, > "disk\_queue" : "1.7", > "disk\_service\_time" : "9.8" > }, > > Thanks. > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > To view this discussion on the web visit > [https://groups.google.com/d/msgid/elasticsearch/97d08f73-dc55-4c44-8fa2-42688952e06d%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/97d08f73-dc55-4c44-8fa2-42688952e06d%40googlegroups.com) > . > For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/CAEM624ZvxNdVQ%3DBdSsB%3DZDaBjYbMJ1JeNCReJjqUdTLKJFiPPA%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAEM624ZvxNdVQ%3DBdSsB%3DZDaBjYbMJ1JeNCReJjqUdTLKJFiPPA%40mail.gmail.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**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, 1:59am UTC](https://discuss.elastic.co/t/meaning-of-different-fs-io-information-from-the-cluster-stats/15001/3 "2017-07-06T01:59:35Z")