elasticsearch performance tuning

The topics in this chapter are as follows: General performance tuning process Analyze page loading information using analysis tools Analyze performance bottlenecks using analysis tools General performance tuning process Before solving the

Brief introductionWeb development often encounters performance issues, especially Web 2.0 applications. CSS code is the most direct "tool" to control the display style and effect of the page, but they are often overlooked by WEB development engineers when it comes to performance tuning, while the fact that nonstandard CSS can have a serious impact on the efficien

weeks data in tens of millions of.Lan Hua Main 16:13:22Ok.Orchid Island Main 16:16:29So change the SQL:with T1 as (Select count (t.c1), t.c1,t.c2,t.c3,t.c4,t.c5From Tab1 twhere T.c2 not in (' Val1 ', ' val2 ', ' val3 ', ' val4 ', ' VAL5 ')and C1 is not NULLGroup by T.C1, T.C2,T.C3,T.C4,T.C5)Select T1.c1,t1.c2,t1.c3,t1.c4,t1.c5from T1Where NOT EXISTS (Select/*+ Use_hash (m,n) */M.C1, M.C2,M.C3,M.C4,M.C5from T1 m,tab2 Nwhere N.c2 > Sysdate-14and m.c1 = N.c1and t1.c2 = M.C2);Orchid Island Main 16:

Collect Elasticsearch performance parameters in Bigdesk and save to database or elk for long-term monitoring. Based on the Python script implementation, the script is as follows:#coding =GBKImport HttplibImport JSONImport timeImport Es_savelogImport ConfigHelperImport Mqhelperdef main ():#变量初始化#上一次统计数据dictlastnodeinfo={}#本次统计当前节点dictnodeinfo={}Print "Start ..."While 1==1:Flag=confighelper.getintconfig ("Fla

1. Million-scale ES query optimization of the actual combat can use the filter without query filter to get the corresponding doc does not calculate score do not have to sort query to match the conditions of the DOC calculation score and sorting filter speed is much faster than query 2. Add related cache configuration indices.cache.filter.size:30% indices.fielddata.cache.size:60% Index.cache.field.type:soft indices.breaker.fielddata.limit:70% 3. Optimization scheme--summary can use filter without

Linux Performance Tuning Overview -What is performance tuning? (What)-Why performance optimization? (Why)-When do I need performance optimization? (When)-Where do I need performance

range. That doesn't make sense either. For performance testing, we also need to define a time period. For example, it lasts 15 minutes on a certain throughput. Because the system becomes unstable when the load arrives, the system will stabilize after a two-minute time. In addition, it is possible that your system behaves normally in the first few minutes of the load, and then it is unstable and even collapsed. So it takes so long. This value, we

Article Title: LAMP system performance tuning to measure performance. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. LAMP performance measurementContinuously Measuring

the data to be monitored, use Topbeat as the resource usage measurement standard, use Filebeat as the real-time Log File Analysis, and use Packetbeat to analyze online network data. There are many optional tools, such as what you know, what you like, or what you want to learn. The most important thing you need to remember is to make sure that you know your benchmark data before you start the modification operation. Performance

Summary Symptom Performance TuningThis note is the basis for all questions regarding performance and tuning measures in SD for all SD applications. Additional key words Cause and prerequisites ... Solution 1. General handling note on SD performance note 16430 2. Billing document and particle ly vf04 note 23154

discovery.zen.ping.multicast.enabled:falsediscovery.zen.ping.unicast.hosts: ["172.30.1.71", " 172.30.1.72 ","172.30.1.52"]indices.memory.index_buffer_size: 30%indices.reovery.max_bytes_per_sec:10gb index.merge.policy.max_merged_segment:10gbindex.merge.scheduler.max_thread_count: 3index.merge.scheduler.max_merge_count:6index.refresh_interval:30sindex.translog.flush_threshold_ size:5gbindex.translog.flush_threshold_ops:50000index.cache.field.type: softindex.cache.field.max_size:50000index.cache.f

browser rendering, so you should also reduce unnecessary operationsSwitch4 Bulk Modifying the DOM removes the element from the document stream, applies multiple changes to it, and brings the element back to the documentThis minimizes redrawing and re-typesetting,Specific methods:1 hide the element, make the changes, and then display it.2 Copy the original element into a node that is out of the document, modify the copy, and overwrite the original element.5 Reducing IFRAMEthe IFRAME consumes a

Title:java Program Performance Tuning notes (3)-tips to help improve performanceTags: tips to help improve performance grammar_cjkruby:true 1. Use exceptions with caution @Test public void Testinfortrycatch () {//performance difference long Starttime=system.currenttimemillis (); int a=0;

Brief introductionWeb development often encounters performance issues, especially Web 2.0 applications. CSS code is the most direct "tool" to control the display style and effect of the page, but they are often overlooked by WEB development engineers when it comes to performance tuning, while the fact that nonstandard CSS can have a serious impact on the efficien

[Elasticsearch] adjacent match (3)-performance, associated word query and ShinglesImprove Performance Phrase and closeness queries are more expensive than simple match queries. The match query only checks whether the entry exists in the Inverted Index, while the match_phrase Query Needs to calculate and compare Multiple possible duplicate entries (Multiple possib