wy96f commented on issue #2845: ARTEMIS-2336 Use zero copy to replicate journal/page/large message file (AGAIN) URL: https://github.com/apache/activemq-artemis/pull/2845#issuecomment-535807466 @franz1981 > If both cases (with/without file region) are saturating the network, why the latter will take more time? The total amount of data sent should be the same... They're taking same time(~7 mins). As i said, `` In the case of -Dio.netty.file.region=true and master, log(something like this 2019-09-26 11:02:49,348 DEBUG [org.apache.activemq.artemis.core.replication.ReplicationManager] sending 1048576 bytes on file xxxx) showed it took about 7 minutes to transfer files, then synchronization done message sent. However in the case of -Dio.netty.file.region=false, log showed it took about about 40 seconds to transfer files, then sync done message sent. `` `` Yes, i saw the network was saturated(initial-replication-sync-timeout was set to 300000, otherwise replication failed due to timeout). Note that log showed 13:47:01,945 last page sent, and sar showed 01:47:37 PM queued up data still transferring and saturating network. `` Saturation lasted for ~7 mins. > Do you have tried master as well? The same.
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