There is no measurable performance penalty when setting the parameter, except maybe the execution of the query with a high value for rows. To make things easy, you can define q.alt=*:* as default in your request handler. No need to specifiy it in the URL.
> Hi, > > I use dismax handler with solr 1.4. > Sometimes, my request comes with q and fq, and others doesn't come with q > (only fq and q.alt=*:*). It's quite ok if I send q.alt=*:* for every > request? Does it have side effects on performance?
