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:;>> 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:;>> 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 >>>>>> >>>>> >>>>
