From nobody Fri Apr 07 12:12:34 2023 X-Original-To: freebsd-current@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4PtHLm6m7lz44YwG for ; Fri, 7 Apr 2023 12:12:48 +0000 (UTC) (envelope-from asomers@gmail.com) Received: from mail-vs1-f51.google.com (mail-vs1-f51.google.com [209.85.217.51]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4PtHLl6nlfz4l0F for ; Fri, 7 Apr 2023 12:12:47 +0000 (UTC) (envelope-from asomers@gmail.com) Authentication-Results: mx1.freebsd.org; none Received: by mail-vs1-f51.google.com with SMTP id i10so36744036vss.5 for ; Fri, 07 Apr 2023 05:12:47 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680869566; x=1683461566; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=9OEJ5cWnyeUSYLNLsxFvkDofDQHEzn3Bo6GgkGJpdJE=; b=tO5n0o5/PnDHRIm91Pp984jmAZa1+IuxBlUm1KF3iOpAX9g2H5FxEbcWK5CQxnvquq tDCK+RIQXwv2YZQ1UHlwA8Ybj9krltFFRMI5NsqlHdk9krO9GNw9O6T6r4HSQTB1mj1e GSUabbp+AwvHWKUi/Kvz18FMjoHzVwUIzn11k6L02PtEL0tPUmOsfj9lyTq+7FsJp0/I hCEb8d4GEFGKEWdxRC0qJizU3Rb/45oDWq2/X9ZswVOdW5189jtznir2FsEbNAWWJLAB /zrwRrVWruZSj90ffVnoBCCeJdd5WXA3GaQFiuBLm07hAq2pejRCPRofgwuhMPSMdspO OORg== X-Gm-Message-State: AAQBX9fE2UvoONH/HvfI8G7rVpTQxmk+0NCKA7SEtbvA4dre+kCkvbac HTWEZtqBW8XnfaQiKpRmoECM04z3JxULoBIf+7g0b6il X-Google-Smtp-Source: AKy350ag5XkQaXLtfII2Sp0b4f2X7hknQpibSSR8GI3/Y3xcUrOYxBU4RRn00S4Nc7n6Qo8SC/h0QOm4Rrk22qLaZoE= X-Received: by 2002:a67:d610:0:b0:425:de1d:6ba3 with SMTP id n16-20020a67d610000000b00425de1d6ba3mr985140vsj.4.1680869566481; Fri, 07 Apr 2023 05:12:46 -0700 (PDT) List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@freebsd.org MIME-Version: 1.0 References: <202304070922.3379MVW5077791@critter.freebsd.dk> In-Reply-To: <202304070922.3379MVW5077791@critter.freebsd.dk> From: Alan Somers Date: Fri, 7 Apr 2023 05:12:34 -0700 Message-ID: Subject: Re: textdumps are too slow To: Poul-Henning Kamp Cc: FreeBSD CURRENT Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: 4PtHLl6nlfz4l0F X-Spamd-Bar: ---- X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:209.85.128.0/17, country:US] X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-ThisMailContainsUnwantedMimeParts: N On Fri, Apr 7, 2023 at 2:22=E2=80=AFAM Poul-Henning Kamp 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.