Hi, what's wrong with high CPU usage - nothing! It's just a sign that your index is configured perfectly, so no I/O is happening during the search and everything is done as fast as possible and therefore uses 100% of CPU on a single core. If you want to slow it down, you may be able to do this outside of Lucene, e.g. in the hypervisor of your virtual machine.
In general, people complaining about high CPU usage are also those that execute the search (which is very fast) but then try to get ALL documents (possibly millions) with paged searching (docs 0-99, then 100 to 199, and so on). This produces high load and takes ages, because it has to decompress every document, reexecute the whole query each time, and finally produces lots of garbage by allocating huge arrays, because paged searching is only optimized for getting like "top 100" scoring documents, not millions. Uwe ----- Uwe Schindler Achterdiek 19, D-28357 Bremen http://www.thetaphi.de eMail: u...@thetaphi.de > -----Original Message----- > From: jayanpraman [mailto:jayan.p.ra...@gmail.com] > Sent: Friday, January 5, 2018 12:48 PM > To: java-user@lucene.apache.org > Subject: Re: High CPU usage observed while searching with lucene 6.2.1 > > Hi Parit Bansal, > > Thanks a lot for your information. > > I have seen high CPU usage during query with 2 GB data index size. > > Regards, > Jayan > > > > -- > Sent from: http://lucene.472066.n3.nabble.com/Lucene-Java-Users- > f532864.html > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
