have a look for more background information:
https://issues.apache.org/jira/browse/SOLR-8096
it's not only related to version 6.6. It's a question of design since 5.x
Günter
On 23.10.2017 21:06, John Davis wrote:
Hello,
We are seeing really slow facet performance with new solr release. This is
on an index of 2M documents. A few things we've tried:
1. method=uif however that didn't help much (the facet fields have
docValues=false since they are multi-valued). Debug info below.
2. changing query (q=) that selects what documents to compute facets on
didn't help a lot, except repeating the same query was fast presumably due
to exact cache hits.
Sample debug info:
“timing”: {
“prepare”: {
“debug”: {
“time”: 0.0
},
“expand”: {
“time”: 0.0
},
“facet”: {
“time”: 0.0
},
“facet_module”: {
“time”: 0.0
},
“highlight”: {
“time”: 0.0
},
“mlt”: {
“time”: 0.0
},
“query”: {
“time”: 0.0
},
“stats”: {
“time”: 0.0
},
“terms”: {
“time”: 0.0
},
“time”: 0.0
},
“process”: {
“debug”: {
“time”: 87.0
},
“expand”: {
“time”: 0.0
},
“facet”: {
“time”: 9814.0
},
“facet_module”: {
“time”: 0.0
},
“highlight”: {
“time”: 0.0
},
“mlt”: {
“time”: 0.0
},
“query”: {
“time”: 20.0
},
“stats”: {
“time”: 0.0
},
“terms”: {
“time”: 0.0
},
“time”: 9922.0
},
“time”: 9923.0
}
},
"facet-debug": {
"elapse": 8310,
"sub-facet": [
{
"action": "field facet",
"elapse": 8310,
"maxThreads": 2,
"processor": "SimpleFacets",
"sub-facet": [
{},
{
"appliedMethod": "UIF",
"field": "school",
"inputDocSetSize": 476,
"requestedMethod": "UIF"
},
{
"appliedMethod": "UIF",
"elapse": 2575,
"field": "work",
"inputDocSetSize": 476,
"requestedMethod": "UIF"
},
{
"appliedMethod": "UIF",
"elapse": 8310,
"field": "level",
"inputDocSetSize": 476,
"requestedMethod": "UIF"
}
]
}
Thanks
John
--
Günter Hipler
Universität Basel | Universitätsbibliothek | Projekt swissbib
Schönbeinstrasse 18-20 | 4056 Basel | Schweiz
Tel +41 61 207 31 12 | Fax +41 61 207 31 03
E-Mail [email protected] | http://www.ub.unibas.ch |
https://www.swissbib.ch
