Date: Mon, 4 Sep 2023 21:15:42 +0200 From: Tomek CEDRO <tomek@cedro.info> To: Wei Hu <weh@microsoft.com> Cc: Mark Millard <marklmi@yahoo.com>, Mark Saad <nonesuch@longcount.org>, FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: Very slow scp performance comparing to Linux [dd to /dev/null shows substantial FreeBSD vs. Ubuntu differences for bs=1k (or 1K) and bs=512] Message-ID: <CAFYkXj=Eq10mzfT=i3B7JGHOA7SgHz=ojNEyipJDvD=1Di-kbg@mail.gmail.com> In-Reply-To: <SI2P153MB04416934796C4BC8A5A99D1CBBE5A@SI2P153MB0441.APCP153.PROD.OUTLOOK.COM> References: <2D466F3C-527C-4EE1-8C3D-3E8CDD8D547F@yahoo.com> <543FBABC-C75A-4AB0-BFB6-1C7C15ECBA4E@longcount.org> <96A99928-4E8E-4AB1-BF3A-D026B280EC0E@yahoo.com> <SI2P153MB0441F1DBE0BB218517B0DEBABBE5A@SI2P153MB0441.APCP153.PROD.OUTLOOK.COM> <B84E85AB-B473-4177-8B80-03BECB8C524E@yahoo.com> <SI2P153MB04416934796C4BC8A5A99D1CBBE5A@SI2P153MB0441.APCP153.PROD.OUTLOOK.COM>
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On Thu, Aug 31, 2023 at 9:56=E2=80=AFAM Wei Hu wrote: > Yes, the network perf gap is not as big as I originally thought. Seems di= fferent > factors contribute to the slowness of scp on FreeBSD. Network stack is on= ly one > of them. Note that Netflix uses FreeBSD because of _better_ network performance over Linux.. also better long term maintenance that comes from better organization, self-compatibility, and more stable kernel API that does not change every minor release ;-) Try the OS on a bare metal hardware, compare the results, use what fits you best. If the results are similar then find a problem in the VM hypervisor. If you think of a long term project and comfortable maintenance use FreeBSD even if you need to improve the driver it will pay back quite soon. --=20 CeDeROM, SQ7MHZ, http://www.tomek.cedro.info
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