Hi, In default WAL mode each cache put() is fsynced to the disk, which causes a major performance penalty. You can do either: batch your updates using putAll or using a data streamer.
BTW, how do you insert data to postgres? 2017-10-04 14:32 GMT+03:00 Dmitry Pryakhin <dmitry.pryak...@nextmail.ru>: > Dear colleagues, > > I consider using Ignite, and now do some testing. Cache performance test > has > shown ridiculously low performance. Same test was done against PostgreSQL > on > the same computer, with much better result. Now I'm trying to figure out if > it's supposed to work that way, or maybe I've done something wrong. Could > anyone verify my tesging approach and configuration? Details are below. > > > Task: insert 10000 items; keys and values are strings. > > Environment: Intel, Windows, Oracle JRE 1.8. > > Configuration 1: Ignite 2.2, 1 server node and 1 client node deployed on > the > same computer, both have default configuration. In-memory cache. > Average execution time = 1.95 sec. > > Configuration 2: Ignite 2.2, 1 server node and 1 client node, deployed on > the same computer. A persistent cache was set up in the server > configuration > file. > Best execution time = 510 sec. > > Configuration 3: PosgtreSQL, deployed on the same computer as the client. > Average execution time = 3 sec. > > Server configuration file for configuration 2: > <?xml version="1.0" encoding="UTF-8"?> > <beans xmlns="http://www.springframework.org/schema/beans"; > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; > xsi:schemaLocation=" > http://www.springframework.org/schema/beans > http://www.springframework.org/schema/beans/spring-beans.xsd";> > > <bean id="grid.cfg" > class="org.apache.ignite.configuration.IgniteConfiguration"> > <property name="persistentStoreConfiguration"> > <bean > class="org.apache.ignite.configuration.PersistentStoreConfiguration"/> > </property> > <property name="cacheConfiguration"> > <bean class="org.apache.ignite.configuration. > CacheConfiguration"> > <property name="name" value="CacheOne"/> > </bean> > </property> > </bean> > </beans> > > > Client code: > > public class PopulateMap { > private static final char[] LETTERS = {'a', 'b', 'c', 'd', 'e', > 'f', 'g', > 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'x', > 'y', 'z'}; > private static final int L_SIZE = LETTERS.length; > > public static void main(String argv[]) throws Exception { > Ignition.setClientMode(true); > > int idx0 = 0, idx1 = 0, idx2 = 0; > StringBuilder bf = new StringBuilder(); > > try (Ignite ignite = Ignition.start("default-config.xml")) > { > ignite.active(true); > > CacheConfiguration<String, String> cacheConf = new > CacheConfiguration<>("CacheOne"); > Cache<String, String> cache = > ignite.getOrCreateCache(cacheConf); > cache.clear(); > > long start = System.currentTimeMillis(); > > for (int i = 1; i <= 10000; i++) { > bf.setLength(0); > bf.append(LETTERS[idx0]). > append(LETTERS[idx1]).append(LETTERS[idx2]); > > if (++idx2 == L_SIZE) { > idx2 = 0; > if (++idx1 == L_SIZE) { > idx1 = 0; > if (++idx0 == L_SIZE) { > idx0 = 0; > } > } > } > > cache.put(String.valueOf(i), > bf.toString()); > } > long end = System.currentTimeMillis(); > System.out.println("=== Execution time is " + (end > - start) + " ms."); > } > } > } > > > > > -- > Sent from: http://apache-ignite-users.70518.x6.nabble.com/ >
