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Posted to commits@rocketmq.apache.org by "Oliverwqcwrw (via GitHub)" <gi...@apache.org> on 2023/03/31 10:27:30 UTC

[GitHub] [rocketmq] Oliverwqcwrw commented on issue #5571: MappedFile#warmMappedFile there may be code that doesn't work

Oliverwqcwrw commented on issue #5571:
URL: https://github.com/apache/rocketmq/issues/5571#issuecomment-1491697584

   @jianglianggithub 我的理解是mlock在锁定内存的时候，操作系统会确保物理内存足够来容纳这个区域，因此在使用mlock时，不会触发缺页中断。但如果内存不足，操作系统将无法保证所有被mlock锁定的内存都可以驻留在物理内存中，这时会出现一定的概率触发缺页中断。
   所以我觉得这块预热是OK的


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