# What does it mean when refresh rate is high? **URL:** \ **Category:** Elasticsearch\ **Created:** [March 26, 2015, 6:25pm UTC](https://discuss.elastic.co/t/what-does-it-mean-when-refresh-rate-is-high/22930 "2015-03-26T18:25:47Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![javadevmtl](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/javadevmtl/32/45613_2.png) [@javadevmtl](https://discuss.elastic.co/u/javadevmtl)\ **Post date:** [March 26, 2015, 6:25pm UTC](https://discuss.elastic.co/t/what-does-it-mean-when-refresh-rate-is-high/22930/1 "2015-03-26T18:25:47Z")
Using 1.4.3 So I have a nice "beefy" cluster 4 nodes of 32 cores, 128GB RAM, 5TB RAID 0 (Using Sandisk 960GB Extreme Pro) for each machine. I am indexing about 4000 documents per second at an average of about 800 bytes per document. At the same time as indexing I'm running queries. Looking at Elastic HQ numbers. Indexing - Index:0.28ms0.32ms0.3ms0.32msIndexing - Delete:0ms0ms0ms0msSearch - Query:29.23ms29.36ms24.46ms36.63msSearch - Fetch:0.25ms0.24ms0.25ms0.21msGet - Total:0.67ms0.46ms0ms0.48msGet - Exists:1.19ms0.65ms0ms0.48msGet - Missing:0ms0.03ms0ms0msRefresh:25.32ms24.86ms24.5ms24.81msFlush:104.14ms 90.45ms111.14ms84.63msNo matter what test I'v done or machine configuration the refresh rate has always been red... What does it mean and does it matter? -- 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/2da09094-f573-42e9-963f-7f9afa880de7%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/2da09094-f573-42e9-963f-7f9afa880de7%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**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:** [March 28, 2015, 5:39am UTC](https://discuss.elastic.co/t/what-does-it-mean-when-refresh-rate-is-high/22930/2 "2015-03-28T05:39:49Z")
If you mouse over the field you can see what the value means. On 27 March 2015 at 05:25, John Smith [java.dev.mtl@gmail.com](mailto:java.dev.mtl@gmail.com) wrote: > Using 1.4.3 > > So I have a nice "beefy" cluster 4 nodes of 32 cores, 128GB RAM, 5TB RAID > 0 (Using Sandisk 960GB Extreme Pro) for each machine. > > I am indexing about 4000 documents per second at an average of about 800 > bytes per document. At the same time as indexing I'm running queries. > > Looking at Elastic HQ numbers. > > Indexing - Index:0.28ms0.32ms0.3ms0.32msIndexing - Delete:0ms0ms0ms0msSearch > > - Query:29.23ms29.36ms24.46ms36.63msSearch - Fetch:0.25ms0.24ms0.25ms > 0.21msGet - Total:0.67ms0.46ms0ms0.48msGet - Exists:1.19ms0.65ms0ms0.48msGet > - Missing:0ms0.03ms0ms0msRefresh:25.32ms24.86ms24.5ms24.81msFlush:104.14ms > 90.45ms111.14ms84.63msNo matter what test I'v done or machine > configuration the refresh rate has always been red... What does it mean and > does it matter? > > -- > 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/2da09094-f573-42e9-963f-7f9afa880de7%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/2da09094-f573-42e9-963f-7f9afa880de7%40googlegroups.com) > [https://groups.google.com/d/msgid/elasticsearch/2da09094-f573-42e9-963f-7f9afa880de7%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/2da09094-f573-42e9-963f-7f9afa880de7%40googlegroups.com?utm_medium=email&utm_source=footer) > . > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- 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/CAEYi1X--8N2CaBD\_HgRsq7sMkOOV27tRCT8QYPZ1ya0t3\_OMqQ%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAEYi1X--8N2CaBD_HgRsq7sMkOOV27tRCT8QYPZ1ya0t3_OMqQ%40mail.gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![javadevmtl](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/javadevmtl/32/45613_2.png) [@javadevmtl](https://discuss.elastic.co/u/javadevmtl)\ **Post date:** [March 30, 2015, 3:09pm UTC](https://discuss.elastic.co/t/what-does-it-mean-when-refresh-rate-is-high/22930/3 "2015-03-30T15:09:30Z")
Thanks the description is just very generic "High values indicate slow I/O" Wouldn't this mean that other I/O related tasks would also show as red. Also given the fact that I'm running San Disk 960GB Extreme Pro in RAID 0 Performance\*\*Seq. Read (up to)550 MB/s550 MB/s550 MB/s Seq. Write (up to)520 MB/s515 MB/s515 MB/s Rnd. Read (up to)100K IOPS100K IOPS100K IOPS Rnd. Write (up to)90K IOPS90K IOPS90K IOPS I also gave my indexing stats above. So why would refresh be red and not the rest if IO is the problem. I would figure the disk configuration would be more then adequate? On Saturday, 28 March 2015 01:40:16 UTC-4, Mark Walkom wrote: > If you mouse over the field you can see what the value means. > > On 27 March 2015 at 05:25, John Smith \<[java.d...@gmail.com](mailto:java.d...@gmail.com) \\> > wrote: > > > Using 1.4.3 > > > > So I have a nice "beefy" cluster 4 nodes of 32 cores, 128GB RAM, 5TB RAID > > 0 (Using Sandisk 960GB Extreme Pro) for each machine. > > > > I am indexing about 4000 documents per second at an average of about 800 > > bytes per document. At the same time as indexing I'm running queries. > > > > Looking at Elastic HQ numbers. > > > > Indexing - Index:0.28ms0.32ms0.3ms0.32msIndexing - Delete:0ms0ms0ms0msSearch > > > > - Query:29.23ms29.36ms24.46ms36.63msSearch - Fetch:0.25ms0.24ms0.25ms > > 0.21msGet - Total:0.67ms0.46ms0ms0.48msGet - Exists:1.19ms0.65ms0ms0.48msGet > > - Missing:0ms0.03ms0ms0msRefresh:25.32ms24.86ms24.5ms24.81msFlush: > > 104.14ms90.45ms111.14ms84.63msNo matter what test I'v done or machine > > configuration the refresh rate has always been red... What does it mean and > > does it matter? > > > > -- > > 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 [elasticsearc...@googlegroups.com](mailto:elasticsearc...@googlegroups.com) \. > > To view this discussion on the web visit > > [https://groups.google.com/d/msgid/elasticsearch/2da09094-f573-42e9-963f-7f9afa880de7%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/2da09094-f573-42e9-963f-7f9afa880de7%40googlegroups.com) > > [https://groups.google.com/d/msgid/elasticsearch/2da09094-f573-42e9-963f-7f9afa880de7%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/2da09094-f573-42e9-963f-7f9afa880de7%40googlegroups.com?utm_medium=email&utm_source=footer) > > . > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- 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/79874405-d44f-43c8-ba1b-c07d61838b59%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/79874405-d44f-43c8-ba1b-c07d61838b59%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**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:** [March 31, 2015, 2:31am UTC](https://discuss.elastic.co/t/what-does-it-mean-when-refresh-rate-is-high/22930/4 "2015-03-31T02:31:39Z")
You'd have to ask the author why they have calculated it this way. On 31 March 2015 at 02:09, John Smith [java.dev.mtl@gmail.com](mailto:java.dev.mtl@gmail.com) wrote: > Thanks the description is just very generic "High values indicate slow I/O" > > Wouldn't this mean that other I/O related tasks would also show as red. > > Also given the fact that I'm running San Disk 960GB Extreme Pro in RAID 0 > > Performance\*\*Seq. Read (up to)550 MB/s550 MB/s550 MB/s Seq. Write (up to)520 > MB/s515 MB/s515 MB/s Rnd. Read (up to)100K IOPS100K IOPS100K IOPS Rnd. > Write (up to)90K IOPS90K IOPS90K IOPS > > I also gave my indexing stats above. So why would refresh be red and not > the rest if IO is the problem. > > I would figure the disk configuration would be more then adequate? > > On Saturday, 28 March 2015 01:40:16 UTC-4, Mark Walkom wrote: > > > If you mouse over the field you can see what the value means. > > > > On 27 March 2015 at 05:25, John Smith [java.d...@gmail.com](mailto:java.d...@gmail.com) wrote: > > > > > Using 1.4.3 > > > > > > So I have a nice "beefy" cluster 4 nodes of 32 cores, 128GB RAM, 5TB > > > RAID 0 (Using Sandisk 960GB Extreme Pro) for each machine. > > > > > > I am indexing about 4000 documents per second at an average of about 800 > > > bytes per document. At the same time as indexing I'm running queries. > > > > > > Looking at Elastic HQ numbers. > > > > > > Indexing - Index:0.28ms0.32ms0.3ms0.32msIndexing - Delete:0ms0ms0ms0msSearch > > > > > > - Query:29.23ms29.36ms24.46ms36.63msSearch - Fetch:0.25ms0.24ms0.25ms > > > 0.21msGet - Total:0.67ms0.46ms0ms0.48msGet - Exists:1.19ms0.65ms0ms > > > 0.48msGet - Missing:0ms0.03ms0ms0msRefresh:25.32ms24.86ms24.5ms24.81ms > > > Flush:104.14ms90.45ms111.14ms84.63msNo matter what test I'v done or > > > machine configuration the refresh rate has always been red... What does it > > > mean and does it matter? > > > > > > -- > > > 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 [elasticsearc...@googlegroups.com](mailto:elasticsearc...@googlegroups.com). > > > To view this discussion on the web visit [https://groups.google.com/d/](https://groups.google.com/d/) > > > msgid/elasticsearch/2da09094-f573-42e9-963f-7f9afa880de7% > > > [40googlegroups.com](http://40googlegroups.com) > > > [https://groups.google.com/d/msgid/elasticsearch/2da09094-f573-42e9-963f-7f9afa880de7%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/2da09094-f573-42e9-963f-7f9afa880de7%40googlegroups.com?utm_medium=email&utm_source=footer) > > > . > > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). > > > > -- > > 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/79874405-d44f-43c8-ba1b-c07d61838b59%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/79874405-d44f-43c8-ba1b-c07d61838b59%40googlegroups.com) > > [https://groups.google.com/d/msgid/elasticsearch/79874405-d44f-43c8-ba1b-c07d61838b59%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/79874405-d44f-43c8-ba1b-c07d61838b59%40googlegroups.com?utm_medium=email&utm_source=footer) > > . > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- 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/CAEYi1X9pNb0hbAaYT7RgY2Va7ghDnenzg%3Db5eSBWuhsrieq7gA%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAEYi1X9pNb0hbAaYT7RgY2Va7ghDnenzg%3Db5eSBWuhsrieq7gA%40mail.gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**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, 12:22am UTC](https://discuss.elastic.co/t/what-does-it-mean-when-refresh-rate-is-high/22930/5 "2017-07-06T00:22:57Z")