I am using Openssl in a project that send large amounts of data in bursts from a windows 2008 server to an Ubuntu 16.04 client.
It works well with low data rates (<1mbs) but when mean data rates hits around 2 mbs, things get ugly. I use blocking wrtite calls and my buffers overflow after a while at 2mbs.
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.
Has anyone seen this type of issue before ?
Thanks,
Lasse
--
openssl-users mailing list
To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users
