I get 2 second response time in average. Any config / hardware change suggestions for my usecase - low qps rate? I would say more shards on the same node, but there would be the cache diminution disadvantage
On Wednesday, February 20, 2013, Walter Underwood wrote: > In production, you should have requests arriving at Solr simultaneously. > Those simultaneous requests will be processed in parallel. > > For each query, there are many ways to improve response time. It depends > on the query and the schema. > > What query response time are you seeing? > > wunder > > On Feb 20, 2013, at 7:39 AM, Manuel Le Normand wrote: > > > Thanks for the reply Erick! To make sure i understand: each query > > request runs on a single thread of the shard. > > My searcher thread is CPU bounded. Does it mean my only possibility to > > shorten my query time, assuming low qps rate, is to split my collection > to > > many shards on different nodes? (And that multiple CPU cores are good > only > > for high qps rate?) > > Thanks in advance > > > > On Wednesday, February 20, 2013, Erick Erickson wrote: > > > >> Well, it matters because your single-threaded client is firing one > request, > >> waiting for the response, then firing another. There's no opportunity > for > >> Solr to use more than one thread for queries if there's only a single > >> thread on a single client ever making requests.... > >> > >> Or I misunderstand what you've set up completely. > >> > >> Best > >> Erick > >> > >> > >> On Wed, Feb 20, 2013 at 8:37 AM, Manuel Le Normand < > >> manuel.lenorm...@gmail.com <javascript:;> <javascript:;>> wrote: > >> > >>> Yes, i made a one threaded script which sends a querry by a post > request > >> to > >>> the shard's url, gets back the response and posts the next querry. > >>> How can it matter? > >>> Manuel > >>> > >>> On Wednesday, February 20, 2013, Erick Erickson wrote: > >>> > >>>> Silly question perhaps, but are you feeding queries at Solr with a > >>> single > >>>> thread? Because Solr uses multiple threads to search AFAIK. > >>>> > >>>> Best > >>>> Erick > >>>> > >>>> > >>>> On Wed, Feb 20, 2013 at 4:01 AM, Manuel Le Normand < > >>>> manuel.lenorm...@gmail.com <javascript:;> <javascript:;> > <javascript:;>> wrote: > >>>> > >>>>> More to it, i do see 75 more threads under the process of tomcat6, > >> but > >>>> only > >>>>> a single one is working while querrying > >>>>> > >>>>> On Wednesday, February 20, 2013, Manuel Le Normand wrote: > >>>>> > >>>>>> Hello, > >>>>>> I created a single collection on a linux server with 8m docs. Solr > >>> 4.1 > >>>>>> While making performance tests, i see that my quad core server > >> makes > >>> a > >>>>>> full use of a single core while the 3 others are idle. > >>>>>> Is there a possibility of making a single sharded collection > >>> available > >>>>> for > >>>>>> multi-threaded querry? > >>>>>> P.s: im not indexing while querrying > >>>>>> > >>>>> > >>>> > > > > >
