Date: Fri, 7 Apr 2023 05:12:34 -0700 From: Alan Somers <asomers@freebsd.org> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: FreeBSD CURRENT <freebsd-current@freebsd.org> Subject: Re: textdumps are too slow Message-ID: <CAOtMX2go2PKC-hDOncJjHxfZRSY3AMGRSGXDF20O%2BzjFoQs=uA@mail.gmail.com> In-Reply-To: <202304070922.3379MVW5077791@critter.freebsd.dk> References: <CAOtMX2j-Muz2uFE5YkYQ7atvQO9VrT4pDdvVnay-S%2BNi6rZNMQ@mail.gmail.com> <202304070922.3379MVW5077791@critter.freebsd.dk>
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On Fri, Apr 7, 2023 at 2:22=E2=80=AFAM Poul-Henning Kamp <phk@phk.freebsd.d= k> wrote: > > -------- > Alan Somers writes: > > > However, these servers also have about 10,000 threads > > apiece, so textdumps are also slow. They take tens of minutes. > > I have dual console setup: both serial and video. It seems to me that > > the speed of the textdump might be limited by the video system. > > I would expect them to be limited by the serial console speed before > the video system speed ? That was my first guess, too. But my serial console is 115200 baud, which is faster than the low performance server grade video card.
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