> On Apr 19, 2017, at 10:39 AM, Lasse Thorbro-Steenberg <lthorbrosteenberg@xxxxxxxxx> wrote: > > Using Wireshark I can see the TCP window remains open, but after a few seconds on 2mbs the server start fragmenting IP packets which completely drops the throughput to around 1 mbs. > Data is delivered successfully even with fragmentation, but the effective throughput achievable on the link drops significantly. OpenSSL does not implement TCP/IP, and network throughput issues need to solved at the network layer. You may have path MTU issues, or other networking problems. If smaller than the MTU writes are done back to back, you may want to disable Nagle's algorithm via the appropriate setsockopt() call (enable TCP_NDELAY). You should be able to see the same throughput issues just sending data (similarly chunked) in the clear without OpenSSL. -- Viktor. -- openssl-users mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users
