zhixinwen commented on code in PR #3098:
URL: https://github.com/apache/kvrocks/pull/3098#discussion_r2253032221
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src/cluster/replication.cc:
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@@ -671,6 +671,8 @@ ReplicationThread::CBState
ReplicationThread::incrementBatchLoopCB(bufferevent *
if (data_written) {
sendReplConfAck(bev, force_ack);
}
+ // set a watermark so the callback won't be called again until the
data is enough
+ bufferevent_setwatermark(bev, EV_READ, incr_bulk_len_ + 2, 0);
Review Comment:
We should not set high watermark, because if there is more data than high
watermark, no more data would be read into the buffer from the Internet. We
should read as much data as possible for optimal throughput.
Leaving high watermark as zero would disable it.
https://github.com/libevent/libevent/blob/master/bufferevent_sock.c#L174
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