Date: Wed, 9 Aug 2023 14:49:48 +0200 From: Juraj Lutter <otis@FreeBSD.org> To: void <void@f-m.fm> Cc: freebsd-hackers@freebsd.org Subject: Re: can sftp be made multi-threaded? Message-ID: <3639ADD0-3715-4B2B-9C25-EBF367FC09A0@FreeBSD.org> In-Reply-To: <ZNOJUfIHGtY9lLpg@int21h> References: <ZNOJUfIHGtY9lLpg@int21h>
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> On 9 Aug 2023, at 14:40, void <void@f-m.fm> wrote: > > Hello hackers@ > > Can sftp be made multi-threaded? Would rsync-over-ssh accomplish the same thing? > > The issue I'm having is with large backups taking ages to transfer > even with both source and destination being on gigabit fibre. > > It looks like sftp is single-threaded and the bandwidth per thread is > something like 5-50 Mbps and it's nowhere near saturating the bandwidth. Would multi-threaded sftp (if it were possible) > or rsync-over-ssh work multi-threaded on a single huge backup file? Have you played with misc/mbuffer from ports? It might do what you are looking for (provided that sftp alone isn’t sufficient). — Juraj Lutter otis@FreeBSD.org
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