Hi,
I'm going to use Ignite instead of guava. During testing, I find that
CacheMode.LOCAL is often OOM. Please help me check what's wrong with it. Thank
you very much.
Ignite version : 2.6.0
jdk 1.8.0_151-b12
Test Code :
==============
public class LocalCacheDemo {
public static void main(String[] args) throws InterruptedException {
String cacheName = "localCache";
String regionName = "localRegin";
DataStorageConfiguration dataStorageConfiguration = new
DataStorageConfiguration();
DataRegionConfiguration localReginConf = new DataRegionConfiguration();
localReginConf.setName(regionName);
localReginConf.setMetricsEnabled(true);
localReginConf.setPersistenceEnabled(false);
localReginConf.setInitialSize(256 * 1024 * 1024);
long max = 2L * 1024L * 1024L * 1024L;
localReginConf.setMaxSize(max);
localReginConf.setPageEvictionMode(DataPageEvictionMode.RANDOM_2_LRU);
dataStorageConfiguration.setDataRegionConfigurations(localReginConf);
dataStorageConfiguration.setPageSize(1024 * 8);
CacheConfiguration cacheCfg = new CacheConfiguration(cacheName);
cacheCfg.setCacheMode(CacheMode.LOCAL);
cacheCfg.setDataRegionName(regionName);
cacheCfg.setBackups(0);
cacheCfg.setStatisticsEnabled(true);
cacheCfg.setAtomicityMode(CacheAtomicityMode.ATOMIC);
cacheCfg.setOnheapCacheEnabled(false);
IgniteConfiguration cfg = new IgniteConfiguration();
cfg.setCacheConfiguration(cacheCfg);
cfg.setDataStorageConfiguration(dataStorageConfiguration);
Ignite ignite = Ignition.start(cfg);
final ClusterGroup clusterGroup = ignite.cluster().forLocal();
final IgniteCache<String, byte[]> cache =
ignite.getOrCreateCache(cacheName);
final ExecutorService pool = Executors.newFixedThreadPool(8);
for (int i = 0; i < 8; i++) {
pool.submit(new Runnable() {
@Override
public void run() {
while (true) {
cache.put(UUID.randomUUID().toString(),
UUID.randomUUID().toString().getBytes());
}
}
});
}
}
}
==============
JVM param??
-server -XX:+UseG1GC -XX:+AlwaysPreTouch -XX:+ScavengeBeforeFullGC -Xmx2g
-Xms2g -XX:MaxMetaspaceSize=100m -XX:MaxGCPauseMillis=100 -XX:+PrintGCDetails
-XX:+PrintTenuringDistribution -XX:+PrintGCDateStamps
-XX:+PrintGCApplicationStoppedTime -XX:NumberOfGCLogFiles=1
-XX:GCLogFileSize=256M -Xloggc:/home/qipu/production/localCache/gc.log
===============
===============
GC log??
2018-08-09T16:36:59.630+0800: 750.387: Total time for which application threads
were stopped: 0.0104034 seconds
2018-08-09T16:36:59.630+0800: 750.387: [GC pause (G1 Evacuation Pause) (young)
(initial-mark)
Desired survivor size 6815744 bytes, new threshold 15 (max 15)
, 0.0041734 secs]
[Parallel Time: 3.1 ms, GC Workers: 4]
[GC Worker Start (ms): Min: 750387.6, Avg: 750387.7, Max: 750387.8, Diff:
0.1]
[Ext Root Scanning (ms): Min: 0.3, Avg: 0.5, Max: 0.9, Diff: 0.6, Sum:
2.1]
[Code Root Marking (ms): Min: 0.2, Avg: 0.6, Max: 1.5, Diff: 1.3, Sum:
2.6]
[Update RS (ms): Min: 0.6, Avg: 1.4, Max: 1.8, Diff: 1.2, Sum: 5.6]
[Processed Buffers: Min: 2, Avg: 3.5, Max: 5, Diff: 3, Sum: 14]
[Scan RS (ms): Min: 0.0, Avg: 0.0, Max: 0.0, Diff: 0.0, Sum: 0.0]
[Code Root Scanning (ms): Min: 0.0, Avg: 0.0, Max: 0.0, Diff: 0.0, Sum:
0.0]
[Object Copy (ms): Min: 0.1, Avg: 0.3, Max: 0.4, Diff: 0.3, Sum: 1.3]
[Termination (ms): Min: 0.0, Avg: 0.1, Max: 0.2, Diff: 0.2, Sum: 0.4]
[GC Worker Other (ms): Min: 0.0, Avg: 0.0, Max: 0.0, Diff: 0.0, Sum: 0.0]
[GC Worker Total (ms): Min: 2.9, Avg: 3.0, Max: 3.0, Diff: 0.1, Sum: 11.9]
[GC Worker End (ms): Min: 750390.7, Avg: 750390.7, Max: 750390.7, Diff:
0.0]
[Code Root Fixup: 0.1 ms]
[Code Root Migration: 0.0 ms]
[Clear CT: 0.1 ms]
[Other: 0.9 ms]
[Choose CSet: 0.0 ms]
[Ref Proc: 0.2 ms]
[Ref Enq: 0.0 ms]
[Free CSet: 0.0 ms]
[Eden: 0.0B(102.0M)->0.0B(102.0M) Survivors: 0.0B->0.0B Heap:
2046.5M(2048.0M)->2046.5M(2048.0M)]
[Times: user=0.01 sys=0.00, real=0.00 secs]
2018-08-09T16:36:59.635+0800: 750.392: Total time for which application threads
were stopped: 0.0045325 seconds
2018-08-09T16:36:59.635+0800: 750.392: [GC concurrent-root-region-scan-start]
2018-08-09T16:36:59.635+0800: 750.392: [GC concurrent-root-region-scan-end,
0.0000078 secs]
2018-08-09T16:36:59.635+0800: 750.392: [GC concurrent-mark-start]
2018-08-09T16:36:59.635+0800: 750.392: [Full GC (Allocation Failure)
===============
