@Amit - https://cwiki.apache.org/confluence/display/solr/DocValues
On Fri, May 23, 2014 at 4:15 PM, Jack Krupansky <j...@basetechnology.com>wrote: > (In the future, please submit this type of request to the solr-user > email list. Thanks.) > > How much system memory is available for OS file system caching? If your > index (30G) doesn't fit in memory, that can cause thrashing. > > I would suggest that 320 million docs is way too much for a single Solr > node – performance degradation of faceting is one example of the effects of > doing so. 100 million would be a more reasonable upper bound. > > -- Jack Krupansky > > *From:* Alice.H.Yang (mis.cnsh04.Newegg) 41493 <alice.h.y...@newegg.com> > *Sent:* Friday, May 23, 2014 5:45 AM > *To:* mailto:dev@lucene.apache.org <dev@lucene.apache.org> > *Subject:* (Issue) How improve solr facet performance > > > Hi, Solr Developers > > > > We are blocked by solr facet performance when query hits many > documents. (about 10,000,000) > > > > Details as follow: > > I have single solr node (solr version is 4.6 ), total has > 320,000,000 documents( local index is about 30G) > > > > the index directory as follow： > > > The cache configure as this: > > <filterCache class="solr.FastLRUCache" > > size="1024000" > > initialSize="1024000" > > autowarmCount="102400"/> > > > > <queryResultCache class="solr.LRUCache" > > size="1024000" > > initialSize="1024000" > > autowarmCount="102400"/> > > > > <documentCache class="solr.LRUCache" > > size="30720" > > initialSize="30720" > > autowarmCount="3072"/> > > > > > > When we query the field eg. default_search: type or default_search: retail, > > > in the response , numfound is about one million and hits cache， QTime is “ > <int name="QTime">2</int>” OR “<int name="QTime">1</int>.” > > > > But when we add several facet.field to do facet , QTime increase to > 220ms or more. > > > > We add the parameter facet.threads=20, but the improvement is not obvious, > and unstable. > > > > Do you have some advice on how improve the facet performance when hit many > documents. > > > > > > > > Best Regards, > > *Alice Yang* > > *+86-021-51530666 <%2B86-021-51530666>*41493* > > *Floor 19,KaiKai Plaza,888,Wanhandu Rd,Shanghai(200042)* > > > > *ONCE YOU KNOW, YOU NEWEGG.* > > > > *CONFIDENTIALITY NOTICE: This email and any files transmitted with it may > contain privileged or otherwise confidential information. It is intended > only for the person or persons to whom it is addressed. If you received > this message in error, you are not authorized to read, print, retain, copy, > disclose, disseminate, distribute, or use this message any part thereof or > any information contained therein. Please notify the sender immediately and > delete all copies of this message. Thank you in advance for your > cooperation.* > > > 保密注意：此邮件及其附随文件可能包含了保密信息。该邮件的目的是发送给指定收件人。如果您非指定收件人而错误地收到了本邮件，您将无权阅读、打印、保存、复制、泄露、传播、分发或使用此邮件全部或部分内容或者邮件中包含的任何信息。请立即通知发件人，并删除该邮件。感谢您的配合！ > > > -- Regards, Varun Thacker http://www.vthacker.in/
