Date: Tue, 25 Feb 2020 23:59:04 +0100 From: Mateusz Guzik <mjguzik@gmail.com> To: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> Cc: Hiroki Sato <hrs@freebsd.org>, micchie.gml@gmail.com, hackers@freebsd.org Subject: Re: Slow PXE boot Message-ID: <CAGudoHGv8OKH%2BM62QnHwNw0bOSCfiLzQm6yQLJJwTbMCdrZ%2B%2BQ@mail.gmail.com> In-Reply-To: <79AD3725-FDCC-4045-A620-EDB25D88FA65@lists.zabbadoz.net> References: <20200224032300.00006290@gmail.com> <8F7B8958-5295-4A26-82E9-94C7A62ED8A1@longcount.org> <CA%2BSc9E0NNi8ViwXCn-Hif2_RQOnu11RLEMRUT2kOAaouLNySvQ@mail.gmail.com> <20200226.055717.1795667435522458112.hrs@FreeBSD.org> <15F7FD1E-3957-4D9E-922F-394D50445BA8@lists.zabbadoz.net> <79AD3725-FDCC-4045-A620-EDB25D88FA65@lists.zabbadoz.net>
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If memory serves the slowdown occured past the rewrite, so bisecting wont get you far. I don't know what the difference is internally though. On 2/25/20, Bjoern A. Zeeb <bzeeb-lists@lists.zabbadoz.net> wrote: > On 25 Feb 2020, at 21:02, Bjoern A. Zeeb wrote: > >> On 25 Feb 2020, at 20:57, Hiroki Sato wrote: >> >> Hi, >> >>> Michio Honda <micchie.gml@gmail.com> wrote >>> in >>> <CA+Sc9E0NNi8ViwXCn-Hif2_RQOnu11RLEMRUT2kOAaouLNySvQ@mail.gmail.com>: >>> >>> 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=E2=80=99ll 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=E2=80=99s time to dig into the changes from back then.. > > /bz > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org= " > --=20 Mateusz Guzik <mjguzik gmail.com>
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