Details
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Enhancement
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Resolution: Fixed
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P4
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8, 10
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b21
Backports
Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
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JDK-8252492 | openjdk8u272 | Aleksey Shipilev | P4 | Resolved | Fixed | b06 |
Description
fastdebug builds performance is important to minimize testing time. ZapStackSegments is trueInDebug, and used to zap vm/utilities/stack.* segments as they get recycled. However, that zapping uses the handrolled memset, which shows up in profiles with individual stores. It seems better to use Copy::fill_to_bytes for this, which will call into platform-specific memset. Additionally, this would be a good time to introduce its zapped pattern to globalDefinitions.
Webrev:
http://cr.openjdk.java.net/~shade/8184762/webrev.01/
Webrev:
http://cr.openjdk.java.net/~shade/8184762/webrev.01/
Attachments
Issue Links
- backported by
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JDK-8252492 ZapStackSegments should use optimized memset
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- Resolved
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