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update default value of allocatorPoolingConcurrency #3001

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Merged
hangc0276 merged 1 commit into from
Jul 27, 2022
Merged

update default value of allocatorPoolingConcurrency #3001

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3 changes: 2 additions & 1 deletion bookkeeper-server/src/main/java/org/apache/bookkeeper/conf/AbstractConfiguration.java
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,7 @@

import javax.net.ssl.SSLEngine;

import io.netty.buffer.PooledByteBufAllocator;
import lombok.extern.slf4j.Slf4j;

import org.apache.bookkeeper.common.allocator.LeakDetectionPolicy;
Expand Down Expand Up @@ -1060,7 +1061,7 @@ public T setAllocatorPoolingPolicy(PoolingPolicy poolingPolicy) {
* @return the configured pooling concurrency for the allocator.
*/
public int getAllocatorPoolingConcurrency() {
return this.getInteger(ALLOCATOR_POOLING_CONCURRENCY, 2 * Runtime.getRuntime().availableProcessors());
return this.getInteger(ALLOCATOR_POOLING_CONCURRENCY, PooledByteBufAllocator.defaultNumDirectArena());

@hangc0276 hangc0276 Jun 24, 2022

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The default value of defaultNumDirectArena is 2 * cpus
https://github.com/netty/netty/blob/4e439264df0523fb6efce5f8f6c7c7fa74addd07/buffer/src/main/java/io/netty/buffer/PooledByteBufAllocator.java#L413-L418

@sunshujie1990 sunshujie1990 Jun 25, 2022 •
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The default value of defaultNumDirectArena is 2 * cpus https://github.com/netty/netty/blob/4e439264df0523fb6efce5f8f6c7c7fa74addd07/buffer/src/main/java/io/netty/buffer/PooledByteBufAllocator.java#L413-L418

Thanks for your reply. Netty default value use the min value between 2*cpus and max mem defaultChunkSize / 2 / 3 to avoid oom. And it helps me resolved bookeeper oom problem in my product environment. Can you help me to merge it?

        DEFAULT_NUM_DIRECT_ARENA = Math.max(0,
                SystemPropertyUtil.getInt(
                        "io.netty.allocator.numDirectArenas",
                        (int) Math.min(
                                defaultMinNumArena,
                                PlatformDependent.maxDirectMemory() / defaultChunkSize / 2 / 3)));

}

/**
Expand Down