Re: svn commit: r251297 - head/sys/dev/xen/netfront

2013-06-03 Thread Colin Percival
On 06/03/13 06:00, Andre Oppermann wrote:
> Log:
>   Specify a maximum TSO length limiting the segment chain to what the
>   Xen host side can handle after defragmentation.
>   
>   This prevents the driver from throwing away too long TSO chains and
>   improves the performance on Amazon AWS instances with 10GigE virtual
>   interfaces to the normally expected throughput.

Thanks!

For the benefit of the list: This (and the r251296, which provides the
network stack infrastructure which this commit uses) was the last of the
"make FreeBSD behave well in Amazon EC2" patches I've been carrying around
(and building into my EC2 images) for the past two years.

Now the only step remaining to make FreeBSD/EC2 pure "straight off the
RELEASE ISO" FreeBSD is to get Xen HVM functionality into GENERIC.

-- 
Colin Percival
Security Officer Emeritus, FreeBSD | The power to serve
Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid

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Current problem reports assigned to freebsd-xen@FreeBSD.org

2013-06-03 Thread FreeBSD bugmaster
Note: to view an individual PR, use:
  http://www.freebsd.org/cgi/query-pr.cgi?pr=(number).

The following is a listing of current problems submitted by FreeBSD users.
These represent problem reports covering all versions including
experimental development code and obsolete releases.


S Tracker  Resp.  Description

o kern/176471  xen[xen] xn driver crash on detach
o kern/176053  xen[xen] [patch] i386: Correct wrong usage of vsnprintf()
o kern/175954  xen[xen] XENHVM xn network driver extreme packet loss dur
o kern/175822  xen[xen] FreeBSD 9.1 does not work with Xen 4.0
o kern/175757  xen[xen] [patch] xen pvhvm looses keyboard input from VNC
o kern/171873  xen[xen] xn network device floods warning in dmesg
o kern/171118  xen[xen] FreeBSD XENHVM guest doesn't shutdown cleanly
o kern/166174  xen[xen] Problems ROOT MOUNT ERROR 
o kern/165418  xen[xen] Problems mounting root filesystem from XENHVM
o kern/164630  xen[xen] XEN HVM kernel: run_interrupt_driven_hooks: stil
o kern/164450  xen[xen] Failed to install FreeeBSD 9.0-RELEASE from CD i
o kern/162677  xen[xen] FreeBSD not compatible with "Current Stable Xen"
o kern/161318  xen[xen] sysinstall crashes with floating point exception
o kern/155468  xen[xen] Xen PV i386 multi-kernel CPU system is not worki
o kern/155353  xen[xen] [patch] put "nudging TOD" message under boot_ver
o kern/154833  xen[xen]: xen 4.0 - DomU freebsd8.2RC3 i386, XEN kernel. 
o kern/154473  xen[xen] xen 4.0 - DomU freebsd8.1 i386, XEN kernel. Not 
o kern/154472  xen[xen] xen 4.0 - DomU freebsd8.1 i386 xen kernel reboot
o kern/154428  xen[xen] xn0 network interface and PF - Massive performan
o kern/153674  xen[xen] i386/XEN idle thread shows wrong percentages
o kern/153672  xen[xen] [panic] i386/XEN panics under heavy fork load
o kern/153620  xen[xen] Xen guest system clock drifts in AWS EC2 (FreeBS
o kern/153477  xen[xen] XEN pmap code abuses vm page queue lock
o kern/153150  xen[xen] xen/ec2: disable checksum offloading on interfac
o kern/152228  xen[xen] [panic] Xen/PV panic with machdep.idle_mwait=1
o kern/144629  xen[xen] FreeBSD 8-RELEASE XEN pvm networking doesn't wor
o kern/143398  xen[xen] FreeBSD 8-RELEASE XEN pvm networking doesn't wor
o kern/143340  xen[xen] FreeBSD 8-RELEASE XEN pvm networking doesn't wor
f kern/143069  xen[xen] [panic] Xen Kernel Panic - Memory modified after
f kern/135667  xenufs filesystem corruption on XEN DomU system
f kern/135421  xen[xen] FreeBSD Xen PVM DomU network failure - netfronc.
f kern/135178  xen[xen] Xen domU outgoing data transfer stall when TSO i
p kern/135069  xen[xen] FreeBSD-current/Xen SMP doesn't function at all 
f i386/124516  xen[xen] FreeBSD-CURRENT Xen Kernel Segfaults when config
o kern/118734  xen[xen] FreeBSD 6.3-RC1 and FreeBSD 7.0-BETA 4 fail to b

35 problems total.

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