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Re: Windows users! Help us test upload performance tuning?

From: Jan Ehrhardt <>
Date: Sat, 04 Aug 2018 15:55:42 +0200

Daniel Jeli?ski in gmane.comp.web.curl.library (Sat, 4 Aug 2018 07:53:24
>2018-08-03 4:07 GMT+02:00 Jan Ehrhardt <>:
>>>I also have a Windows 8.1 64-bits running in a Virtualbox on the Wondows
>>>2008 R2 server. No speed improvement. Most of the times the patched
>>>version is a little bit faster, but sometimes even slower. Typical
>>>result below.
>> The same happens with other Windows versions in a Virtualbox (on the
>> Win2k8 server).
>That one is disturbing. Wonder if this happens because ideal send
>buffer query fails under virtualbox, or if it returns bogus values
>(like 8 KiB). Which version of Virtualbox is that? How did you set up
>the network adapter? I'd like to try and reproduce this here.

Virtualbox 5.0.16. Network adapter screenshot here:

Received on 2018-08-04