Cost of automatics refresh

I am curious about how much cost for both cpu and memory when automatic
refresh is on while I am not adding new index. For example, when it is time
to refresh, ES have to look at the buffer to see if there is anything to
refresh. how much would this cost even there nothing to flush.
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/6988b206-539a-494a-a16f-9a1a7735be25%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

See http://blog.sematext.com/2013/07/08/elasticsearch-refresh-interval-vs-indexing-performance/

Otis

Monitoring * Alerting * Anomaly Detection * Centralized Log Management
Solr & Elasticsearch Support * http://sematext.com/

On Wednesday, November 19, 2014 3:04:29 PM UTC-5, Jinyuan Zhou wrote:

I am curious about how much cost for both cpu and memory when automatic
refresh is on while I am not adding new index. For example, when it is time
to refresh, ES have to look at the buffer to see if there is anything to
refresh. how much would this cost even there nothing to flush.
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/ea44fbff-e178-44b1-87c2-6446616510e0%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

The cost of automatic refresh if you haven't written anything is pretty
close to 0. I believe elasticsearch keeps a list of all indexes that have
been written to rather than checking each one.
On Nov 19, 2014 3:04 PM, "Jinyuan Zhou" zhou.jinyuan@gmail.com wrote:

I am curious about how much cost for both cpu and memory when automatic
refresh is on while I am not adding new index. For example, when it is time
to refresh, ES have to look at the buffer to see if there is anything to
refresh. how much would this cost even there nothing to flush.
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.
To view this discussion on the web visit
https://groups.google.com/d/msgid/elasticsearch/6988b206-539a-494a-a16f-9a1a7735be25%40googlegroups.com
https://groups.google.com/d/msgid/elasticsearch/6988b206-539a-494a-a16f-9a1a7735be25%40googlegroups.com?utm_medium=email&utm_source=footer
.
For more options, visit 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.
To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/CAPmjWd1xXBr6pYFsazH8qELLyhjuGLoW%3DDo_O-x2SPL_t6YYbQ%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.