[GitHub] [rocketmq] lizhanhui commented on pull request #4903: fix-warmMappedFile：Place a safepoint before the loop, the processing effect takes precedence over sleep

[GitBox <gi...@apache.org>]

lizhanhui commented on PR #4903:
URL: https://github.com/apache/rocketmq/pull/4903#issuecomment-1229187159

   The existing solution is to write one byte per page as warming. According to https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux_for_real_time/7/html/reference_guide/using_mlock_to_avoid_page_io, it looks sufficient to mlock;
   
   Another thing, actual empty write is actually preferred for some reason, it would be better to iterate from file tail to head, as the head of the file region is more likely to be written with data in the near future.


-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: dev-unsubscribe@rocketmq.apache.org

For queries about this service, please contact Infrastructure at:
users@infra.apache.org