Date: Thu, 03 Apr 2014 11:34:56 -0400 From: Allan Jude <freebsd@allanjude.com> To: freebsd-doc@freebsd.org Subject: Re: Downplaying a serious issue Message-ID: <533D7FA0.5050404@allanjude.com> In-Reply-To: <86txaatrpp.fsf@shell.gmplib.org> References: <861txffcgh.fsf@shell.gmplib.org> <alpine.BSF.2.00.1404022118570.76387@wonkity.com> <20140403035800.GR14379@glenbarber.us> <86k3b697nt.fsf@shell.gmplib.org> <20140403113605.GZ14379@glenbarber.us> <20140403140301.GE14379@glenbarber.us> <86txaatrpp.fsf@shell.gmplib.org>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --dHnbIDgmIdklPDxdgf9vqCmXKEOBxojnT Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 2014-04-03 10:25, Torbjorn Granlund wrote: > Glen Barber <gjb@FreeBSD.org> writes: >=20 > On Thu, Apr 03, 2014 at 07:36:05AM -0400, Glen Barber wrote: > > On Thu, Apr 03, 2014 at 09:47:02AM +0200, Torbjorn Granlund wrote: > > > Glen Barber <gjb@FreeBSD.org> writes: > > > The issue is specific to certain hardware configurations, and u= nless > > > anyone has made any breakthroughs that I am unaware of, the cau= se is > > > still unknown. > > > =20 > > > It happens on: > > >=20 > > > AMD piledriver running Linux+KVM > > > AMD piledriver running Linux+Xen > > > Intel Nehalem running NetBSD+Xen > > > Intel Sandybridge running NetBSD+Xen > > > Intel Haswell running NetBSD+Xen > > > AMD K10 Barcelona running NetBSD+Xen > > > AMD Bulldozer running NetBSD+Xen > > >=20 > >=20 > > We need more specifics. > >=20 > =20 > Here is the type of information we need: > CPU information > RAM > ACPI information > Drive controller information > =20 > The CPU list is above. >=20 > I have used RAM from 192 MiB to 512 MiB. Your machine where you have > not observed problems clearly has an amount of memory in a quite > different range. Perhaps this bug is related to the amount of RAM? >=20 > For all Xen runs, I have had 'apic =3D 1' in the guest config files. I= > don't know about KVM, I used the default. (I cannot easily retest this= , > since the machine in question now runs Linux+Xen instead of Linux+KVM. > I have no other KVM machine.) >=20 > Not sure about emulated drive controller, and how to control that. I'v= e > used file:/xen/freebsd/32/v100/disk.img,hda,w' mostly, but also tried > xvda instead of hda. >=20 > I have been persistent, trying at least 30 installs of 10.0-foo for > several values of foo (BETA, RC, RELEASE, STABLE) and on the various > systems above. >=20 > It seems quite likely that this is very easy to confirm, given that > every one of my attempts has been a failure. >=20 > Note that the actual installation procedure apparently works. After > reboot some simple repeated filesystem command, say >=20 > sha1 /bin/cat > sha1 /bin/cat >=20 > will almost certainly yield different results. >=20 > I've tested vfs.unmapped_buf_allowed=3D0 only for one machine (since I = saw > that only recently) and it works in that case. It is the AMD piledrive= r > running Linux+Xen, 512 MiB RAM. >=20 >=20 > Torbj=C3=B6rn > Please encrypt, key id 0xC8601622 > _______________________________________________ > freebsd-doc@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-doc > To unsubscribe, send any mail to "freebsd-doc-unsubscribe@freebsd.org" >=20 Glen is looking for very specific details about the CPU, RAM and disk controller of the host, not the VM --=20 Allan Jude --dHnbIDgmIdklPDxdgf9vqCmXKEOBxojnT Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.16 (MingW32) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJTPX+gAAoJEJrBFpNRJZKfZYMP/2aazufP4G30d51OtiIVUFCH zMe9XKqaC7Lo4RXdfWzbphKJNzP60MbPIRhDuxstMADuZiHFh4ACEWbZWHT2O+aL +LzwR7H7uTbkm3etFP66uFLkLRmseWHo/4G39EOU2c8gGQ0gvhuk+iWjCfxp68b0 MiV24v/ZYYbaIpZ+5tnzgATBcLX4kKpuH3e8owiwaT048n4vgGnmFXwulykpooka FqiUl/jJiEX4nVwccVLPY1p5C0J2Cq+56y2URhkTgWVIMynGa4nyTKFgEZvfybZM izyJYdJLpvGh+BgbdYDRb46lXHumDCU4atK1Ql2Bs5YIF8cMEWPlHYNAMIeE5Pxh 4JkJgepGux7jmWBcvUIiI2xQzOslgofHxlbcGvs1Z5aM2HEnb44Im1mQcGEkVX2O mp66s+jRLa8zOt4p3tM/wBVesuJ65pjjuGgOOWGDOZEMNvlfDY/0770IWAkD2Bbw uGmzveJSRtKXBh/Y5M7+Q0eLRA/2fBHPpp1omoRWoTEoLiQVKPWyRGwAb7aWLvIA LSX3ghx6HJE3l6MaPRU+pKMnHkucpeFrQc/wa99m5afqHNzEMf8hbToDliQifQgm 0uNR5G0qEdqh/ua1x4m1bVn7b52wPjflyVtaZk7gjqHgyEuAUQ7WM2wM3Davm3lE ahNneDfxDvLTWPrgl0Dp =172s -----END PGP SIGNATURE----- --dHnbIDgmIdklPDxdgf9vqCmXKEOBxojnT--
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