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Code Releases Activity

Use OS.pageSize() instead of 4096 constant in ChronicleMapBuilder.segmentHeaderSize() method

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leventov
2016-02-10 23:00:33 +07:00
parent 6b030ab44e
commit 31d362fe2f
1 changed files with 3 additions and 3 deletions
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src/main/java/net/openhft/chronicle/map/ChronicleMapBuilder.java
+3 -3
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@@ -1056,11 +1056,11 @@ public final class ChronicleMapBuilder<K, V> implements
int segmentHeaderSize() {
int segments = actualSegments();
long pageSize = 4096;
if (segments * (64 * 3) < (2 * pageSize)) // i. e. <= 42 segments
long pageSize = OS.pageSize();
if (segments * (64 * 3) < (2 * pageSize)) // i. e. <= 42 segments, if page size is 4K
return 64 * 3; // cache line per header, plus one CL to the left, plus one to the right
if (segments * (64 * 2) < (3 * pageSize)) // i. e. <= 96 segments
if (segments * (64 * 2) < (3 * pageSize)) // i. e. <= 96 segments, if page size is 4K
return 64 * 2;
// reduce false sharing unless we have a lot of segments.