From nobody Fri Apr 07 09:22:31 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 4PtCZS2Pfvz44NyQ for ; Fri, 7 Apr 2023 09:22:40 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from phk.freebsd.dk (phk.freebsd.dk [130.225.244.222]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4PtCZR3QZZz4Drn; Fri, 7 Apr 2023 09:22:39 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Authentication-Results: mx1.freebsd.org; none Received: from critter.freebsd.dk (unknown [192.168.55.3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by phk.freebsd.dk (Postfix) with ESMTPS id 88BBE89281; Fri, 7 Apr 2023 09:22:31 +0000 (UTC) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.17.1/8.16.1) with ESMTPS id 3379MVwt077792 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Fri, 7 Apr 2023 09:22:31 GMT (envelope-from phk@critter.freebsd.dk) Received: (from phk@localhost) by critter.freebsd.dk (8.17.1/8.16.1/Submit) id 3379MVW5077791; Fri, 7 Apr 2023 09:22:31 GMT (envelope-from phk) Message-Id: <202304070922.3379MVW5077791@critter.freebsd.dk> To: Alan Somers cc: FreeBSD CURRENT Subject: Re: textdumps are too slow In-reply-to: From: "Poul-Henning Kamp" References: 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 Content-Type: text/plain; charset="us-ascii" Content-ID: <77789.1680859351.1@critter.freebsd.dk> Date: Fri, 07 Apr 2023 09:22:31 +0000 X-Rspamd-Queue-Id: 4PtCZR3QZZz4Drn X-Spamd-Bar: ---- X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:1835, ipnet:130.225.0.0/16, country:EU] X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-ThisMailContainsUnwantedMimeParts: N -------- 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 ? -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.