Slow downloads over SSL

kyprizel kyprizel at
Thu Feb 5 13:25:02 UTC 2015

Make a pcap, check packet loss/mtu/window size.

On Wed, Feb 4, 2015 at 8:54 PM, B.R. <reallfqq-nginx at> wrote:

> Nothing in the configuration part you provided rings any bell to me on why
> this is going on.
> I suggest you take a deeper look at the server level, see if there is not
> something that might have an impact there.
> Also, the usual recommended process to seek for the source of the trouble
> is to find what triggers is either by:
> - Starting from the minimal configuration serving your files over both
> protocols and, provided the problem disappeared, progressively add
> directives again until it triggers
> - Starting from your current configuration, progressively remove tweaking
> directives until you reach the minimal configuration or the problem
> disappears
> If you got a minimal working example still affected with that problem, I
> suggest you provide us with it (after having anonymized what appears
> sensitive to you). If it can be reproducted, then it might be something we
> missed or a bug.
> Happy digging! :o)
> ---
> *B. R.*
> On Wed, Feb 4, 2015 at 2:23 PM, rafaelr <nginx-forum at> wrote:
>> B.R.
>> They are serving exactly the same resources at the same time... My vhost
>> points to the same folders for each domain. Files are accessible over HTTP
>> and HTTPS. The slow down comes when downloading (the same resource) from
>> HTTPS. For  example:
>> http://webmail.domain.tld/ (30MB file can be downloaded at
>> 4-5MB/s)
>> https://webmail.domain.tld/ (30MB file can be downloaded at
>> 300-700kb/s)
>> I enabled SPDY to see if that would've made a difference but it didn't. I
>> do
>> have SPDY currently enabled.
>> Posted at Nginx Forum:
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