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Lighthouse handler optimizations (#320)

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We noticed that the number of memory allocations LightHouse.HandleRequest creates for each call can seriously impact performance for high traffic lighthouses. This PR introduces a benchmark in the first commit and then optimizes memory usage by creating a LightHouseHandler struct. This struct allows us to re-use memory between each lighthouse request (one instance per UDP listener go-routine).
This commit is contained in:
Wade Simmons
2020-11-23 14:50:01 -05:00
committed by GitHub
parent 672ce1f0a8
commit 2e7ca027a4
5 changed files with 151 additions and 43 deletions
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4
udp_linux.go
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@ -146,6 +146,8 @@ func (u *udpConn) ListenOut(f *Interface) {
udpAddr := &udpAddr{}
nb := make([]byte, 12, 12)
lhh := f.lightHouse.NewRequestHandler()
//TODO: should we track this?
//metric := metrics.GetOrRegisterHistogram("test.batch_read", nil, metrics.NewExpDecaySample(1028, 0.015))
msgs, buffers, names := u.PrepareRawMessages(f.udpBatchSize)
@ -166,7 +168,7 @@ func (u *udpConn) ListenOut(f *Interface) {
udpAddr.IP = binary.BigEndian.Uint32(names[i][4:8])
udpAddr.Port = binary.BigEndian.Uint16(names[i][2:4])
f.readOutsidePackets(udpAddr, plaintext[:0], buffers[i][:msgs[i].Len], header, fwPacket, nb)
f.readOutsidePackets(udpAddr, plaintext[:0], buffers[i][:msgs[i].Len], header, fwPacket, lhh, nb)
}
}
}