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Zeeb" To: "Hiroki Sato" Cc: micchie.gml@gmail.com, hackers@freebsd.org Subject: Re: Slow PXE boot Date: Tue, 25 Feb 2020 22:27:06 +0000 X-Mailer: MailMate (2.0BETAr6146) Message-ID: <79AD3725-FDCC-4045-A620-EDB25D88FA65@lists.zabbadoz.net> In-Reply-To: <15F7FD1E-3957-4D9E-922F-394D50445BA8@lists.zabbadoz.net> References: <20200224032300.00006290@gmail.com> <8F7B8958-5295-4A26-82E9-94C7A62ED8A1@longcount.org> <20200226.055717.1795667435522458112.hrs@FreeBSD.org> <15F7FD1E-3957-4D9E-922F-394D50445BA8@lists.zabbadoz.net> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 48RtpZ2QqVz3wm5 X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of bzeeb-lists@lists.zabbadoz.net designates 2a01:4f8:13b:39f::9f:25 as permitted sender) smtp.mailfrom=bzeeb-lists@lists.zabbadoz.net X-Spamd-Result: default: False [-4.84 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_COUNT_FIVE(0.00)[5]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; R_SPF_ALLOW(-0.20)[+ip6:2a01:4f8:13b:39f::9f:25]; IP_SCORE(-2.54)[ip: (-8.58), ipnet: 2a01:4f8::/29(-2.54), asn: 24940(-1.55), country: DE(-0.02)]; TAGGED_RCPT(0.00)[]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[zabbadoz.net]; TO_DN_SOME(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_TLS_LAST(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:2a01:4f8::/29, country:DE]; FREEMAIL_CC(0.00)[gmail.com]; MID_RHS_MATCH_FROM(0.00)[] X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 25 Feb 2020 22:27:20 -0000 On 25 Feb 2020, at 21:02, Bjoern A. Zeeb wrote: > On 25 Feb 2020, at 20:57, Hiroki Sato wrote: > > Hi, > >> Michio Honda wrote >> in >> : >> >> mi> Hi, >> mi> >> mi> I had a similar problem before, and the solution was the use of >> pxeboot >> mi> file taken from FreeBSD 10 as suggested by Hiroki. >> >> I could not reproduce this by using my boxes after all, but >> replacing >> pxeboot with the older one was useful to gain the normal speed at >> that time probably because of difference between new (11 or later) >> loader's nfs client and the old one. It was a problem sending a lot >> of duplicated packets for some reason, not just a matter of the >> buffer size. And the server side was Linux. >> >> Have anyone else also experienced this kind of very slow PXE >> booting? >> It may be specific to using a Linux NFS server. > > I see it on zoo all day long for ages. I’ll go back and try an old > pxeboot; if that really speeds things up massively I might even be > willing to debug this a bit more. I found a pxeboot from FreeBSD 7 and while it did not entirely work the kernel was loaded in seconds rather than minutes (felt). I guess it’s time to dig into the changes from back then.. /bz