When we clone via SSH on our Windows 2008 server we get slow speeds around 100-120KiB/s. From where we are testing. If we put Cygwin on that same windows server, we'll get ~600KiB/s transfer speeds. We've tried installling Stash on several bare-bones servers nowm and we still get these slow speeds, but only going to Stash via SSH. The minute we use Cygwin as the SSH server, we get much better times.
As another test we installed Stash on a 2012 server, in the same subnet and it is fast. So does anyone know what about 2008 that woud cause SSH on Stash to run slow, but not on Cygwin?
Hi Balazs and Scott,
We have a known issue with slowness on Windows environments and we have documented it:
I was wondering if that could be the case for you too after seeing your posts.
As described on our Supported Platforms document, we do not support Cygwin.
Atlassian Support - DevTools
So unfortunately, it does not solve our problems. We've made a local user with non-admin rights and start Stash with this user. There are are still slow downs. We've tried multiple bare-bones Microsoft Windows 2008 servers. We've provisioned one from the Azure cloud and the same results exists, Stash is slow, and Cygwin is fast. Run it on 2012 and Stash is fast again. Unfortuantely we cannot run it on 2012 in our production environment.
It seems somehow latency sensitive. If we run it on the local LAN, we get ~19MB of throughput, with very little other traffic. If we make a single hop over a dedicated 150Mb PIP line with 2-4ms latency, it drops down to 4MB. Then we go over our MPLS link from datacenter to datacenter with about 30ms latency and the connection drops down to the 100KB range. All the while Cygwin is exceptionally.
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