[openssl-users] OpenSSL Behaviour under low bandwidth
mebeyn at gmail.com
Fri May 15 20:33:29 UTC 2015
I send OpenSSL blocks of 512 bytes...but as fast as it will consume them
(since I want rid of the data as fast as possible). Blocking.
On 15 May 2015 at 21:21, Kurt Roeckx <kurt at roeckx.be> wrote:
> On Fri, May 15, 2015 at 12:44:03PM +0100, Martin Beynon wrote:
> > That is right from 100Mbps down to 150 kpbs everything works as expected.
> > As I continue tuning down the bandwidth below 150kbps openssl starts to
> > stop sending data. It becomes very bursty and there are whole periods of
> > seconds where no data is sent from openssl even though it's 17KB TLS
> > is full and pings, for example, can be sent and received normally.
> > There appears to be some relation to the size of this buffer and the
> > minimum achievable throughput we can get.. Unless my maths is off; 140
> > would give about 17KB/s throughput.. Coincidence?
> Do you send packets to OpenSSL in blocks of 17 KB? Is that
> blocking or non-blocking?
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