Date: Mon, 24 Feb 2020 08:46:20 -0500 From: Mark Saad <nonesuch@longcount.org> To: =?utf-8?Q?Domagoj_Smol=C4=8Di=C4=87?= <rank1seeker@gmail.com> Cc: hackers@freebsd.org Subject: Re: Slow PXE boot Message-ID: <8F7B8958-5295-4A26-82E9-94C7A62ED8A1@longcount.org> In-Reply-To: <20200224032300.00006290@gmail.com> References: <20200224032300.00006290@gmail.com>
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Domagoj I regularly boot 11.3-Stable and 12.1-Stable amd64 on servers with 64gb, 128gb , and occasional more . I do t have that issue . Can you take a peak at the switch your boxes are attached to ; It sounds like a device is running at 100mb 1/2 duplex . I remember the realtec nics doing this when set to auto . --- Mark Saad | nonesuch@longcount.org > On Feb 23, 2020, at 9:23 PM, Domagoj Smolčić <rank1seeker@gmail.com> wrote: > > Yo Crew! > > During PXE boot, from server (11.3-RELEASE-p5 i386) with 1 GB RAM, client with: > 4 GB RAM booted kernel in ~2 min > 8 GB RAM booted kernel in ~20 min (at least) > So all below is tested with 2 different clients, each with NIC of different manufacturer (Realtec & Intel) > > I've read on forums that if client has much, much more RAM than server, this happens. > Suggestion was to to set loader(8) tunable hw.memtest.tests to 0, so client would skip RAM test. > > PXE boot is served to clients from /PXE, so ... > Setting hw.memtest.tests="0" in /PXE/boot/loader.conf, yielded no results! > > By the way, for some reason, hw.memtest.tests tunable DOESN'T exist in man pages! > I had to look in source code to confirm it still exists. > > > Next, I've tried: > # echo 'nfs.read_size="16384"' > /PXE/boot/loader.conf > Changing value to ANY value other than default 1024, completely halts client's kernel loading at 'Loading kernel...'! > > > Lastly, I've tried tactic used with UFS's stage 2 /boot/boot, to skip stage 3 loader completely and to directly load kernel instead. > So in dhcpd.conf, I've replaced: > filename "boot/pxeboot"; > with: > filename "boot/kernel/kernel"; > > Result: > Attempt to pull GENERIC kernel directly, resulted in: "NBP is too big to fit in free base memory" > Maybe I should try to compile custom minimal kernel 'ident PXE' ... > It is unbelievable how many problems do I have ... > > > > Domagoj Smolčić > _______________________________________________ > 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"help
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