xinyiZzz commented on issue #9194: URL: https://github.com/apache/incubator-doris/issues/9194#issuecomment-1107817598
> speed > hll_chunkAlloc: 547.794 seconds > apache:master: 712.229 seconds > mem.memused > hll_chunkAlloc: used 38G memory avg backend node > apache:master: used 46G memory avg backend node > mem.memused.percent > hll_chunkAlloc: 15% > apache:master: 18% Using ChunkAllocor to execute the same SQL for the second time will be faster, and avoid tcmalloc lock in high concurrency, the effect will be more obvious~ Because ChunkAllocor has a cold start, the memory does not need to be allocated again when executing the same SQL for the second time, provided that the upper limit of the cache is not exceeded. -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
