Hello, Arun. Why don't you warm a new searcher with a query listener? On Tue, Feb 13, 2024 at 3:18 AM Arun Sudhir <arunsud...@gmail.com> wrote:
> Hello, > We use solr for our search needs and we have documents indexed on a core in > multiple machines. Over time, the index on some machines has grown from 30 > GB to 60 GB now to a giant 133 GB. While others are still hovering around > 80GB, and some others are still under 30GB. We manually control which > documents go into which machine and do not use SolrCloud. > > We have a field in our index which is a docValue. What we have noticed is > that facet queries on this field take around 10 seconds for almost the > first call every minute or so on the huge server machines which have ~130 > GB index size. We commit every minute on our servers as well. We have > ensured that the machines do not starve on RAM and for the ones which have > 130 GB of index, we have 256 GB of RAM. So the segments are all in memory > all the time. > > Still, we see every call made after a minute or so takes 10 seconds on the > big shards with index size close to 130 GB, 6 seconds on the shards that > are 80GB, and less than 4 seconds on the normal shards whose size is less > than 30 GB. > > How can we optimize and get rid of this latency? We have tried using > DocValuesFormat=Direct, increasing the number of facet.threads, increasing > the heap size etc. Is there anything else we can do to get the > performance of facet queries on the large shards to under 2 seconds? > > > Thanks > Arun > -- Sincerely yours Mikhail Khludnev
