From: "Richard W.M. Jones" <rjones@redhat.com>
To: Kevin O'Connor <kevin@koconnor.net>
Cc: marc.mari.barcelo@gmail.com, Paolo Bonzini <pbonzini@redhat.com>,
Stefan Hajnoczi <stefanha@gmail.com>,
Gerd Hoffmann <kraxel@redhat.com>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Why is SeaBIOS used with -kernel?
Date: Fri, 1 Apr 2016 21:25:25 +0100 [thread overview]
Message-ID: <20160401202525.GQ32728@redhat.com> (raw)
In-Reply-To: <20160401194413.GA14938@morn.lan>
On Fri, Apr 01, 2016 at 03:44:14PM -0400, Kevin O'Connor wrote:
[...]
I ran all the tests again, but this time I ran the test program 3
times (so 30 passes for each setting). As you can see from the
results below the test is not very stable, so that could easily have
accounted for the variation I saw when I only ran the test program
once for each setting.
The difference in .config is just:
--- seabios-bootorder=n.config 2016-04-01 21:19:53.599230008 +0100
+++ seabios-bootorder=y.config 2016-04-01 21:19:31.090441232 +0100
@@ -14,7 +14,7 @@
CONFIG_THREADS=y
# CONFIG_RELOCATE_INIT is not set
# CONFIG_BOOTMENU is not set
-# CONFIG_BOOTORDER is not set
+CONFIG_BOOTORDER=y
CONFIG_ENTRY_EXTRASTACK=y
CONFIG_MALLOC_UPPERMEMORY=y
CONFIG_ROM_SIZE=0
Rich.
----------------------------------------------------------------------
CONFIG_BOOTORDER=y
passes 10
append
backend libvirt
hv /home/rjones/d/qemu/x86_64-softmmu/qemu-system-x86_64
memsize 500
smp 1
Result: 1098.0ms ±0.8ms
passes 10
append
backend libvirt
hv /home/rjones/d/qemu/x86_64-softmmu/qemu-system-x86_64
memsize 500
smp 1
Result: 1095.9ms ±0.4ms
passes 10
append
backend libvirt
hv /home/rjones/d/qemu/x86_64-softmmu/qemu-system-x86_64
memsize 500
smp 1
Result: 1087.5ms ±3.8ms
CONFIG_BOOTORDER=n
passes 10
append
backend libvirt
hv /home/rjones/d/qemu/x86_64-softmmu/qemu-system-x86_64
memsize 500
smp 1
Result: 1103.4ms ±2.6ms
passes 10
append
backend libvirt
hv /home/rjones/d/qemu/x86_64-softmmu/qemu-system-x86_64
memsize 500
smp 1
Result: 1097.2ms ±4.8ms
passes 10
append
backend libvirt
hv /home/rjones/d/qemu/x86_64-softmmu/qemu-system-x86_64
memsize 500
smp 1
Result: 1098.0ms ±8.3ms
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine. Supports Linux and Windows.
http://people.redhat.com/~rjones/virt-df/
next prev parent reply other threads:[~2016-04-01 20:25 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-19 20:31 [Qemu-devel] Why is SeaBIOS used with -kernel? Richard W.M. Jones
2016-03-21 7:58 ` Gerd Hoffmann
2016-03-21 8:37 ` Richard W.M. Jones
2016-03-21 9:40 ` Gerd Hoffmann
2016-03-31 9:21 ` Stefan Hajnoczi
2016-03-31 16:22 ` Kevin O'Connor
[not found] ` <20160331221039.GA32728@redhat.com>
2016-03-31 22:17 ` Richard W.M. Jones
2016-03-31 22:44 ` Kevin O'Connor
2016-04-01 7:55 ` Richard W.M. Jones
2016-04-01 8:03 ` Paolo Bonzini
2016-04-01 8:47 ` Richard W.M. Jones
2016-04-01 8:51 ` Paolo Bonzini
2016-04-01 8:57 ` Richard W.M. Jones
2016-04-01 9:05 ` Paolo Bonzini
2016-04-01 8:02 ` Richard W.M. Jones
2016-04-01 8:11 ` Paolo Bonzini
2016-04-01 8:14 ` Richard W.M. Jones
2016-04-01 8:24 ` Paolo Bonzini
2016-04-01 8:44 ` Richard W.M. Jones
2016-04-01 8:47 ` Paolo Bonzini
2016-04-01 8:49 ` Vasiliy Tolstov
2016-04-01 9:16 ` Dr. David Alan Gilbert
2016-04-01 9:18 ` Gerd Hoffmann
2016-04-01 10:17 ` Richard W.M. Jones
2016-04-01 11:07 ` Gerd Hoffmann
2016-04-01 11:11 ` Richard W.M. Jones
2016-04-01 11:20 ` Richard W.M. Jones
2016-04-01 11:21 ` Paolo Bonzini
2016-04-01 11:26 ` Richard W.M. Jones
2016-04-05 4:38 ` Kevin Wolf
2016-04-05 8:04 ` Richard W.M. Jones
2016-04-05 8:11 ` Kevin Wolf
2016-04-05 9:19 ` Richard W.M. Jones
2016-04-05 9:26 ` Kevin Wolf
2016-04-01 11:32 ` Gerd Hoffmann
2016-04-01 11:49 ` Richard W.M. Jones
2016-04-01 15:35 ` Kevin O'Connor
2016-04-01 16:03 ` Paolo Bonzini
2016-04-01 18:41 ` Richard W.M. Jones
2016-04-01 18:59 ` Richard W.M. Jones
2016-04-01 19:04 ` Kevin O'Connor
2016-04-01 19:10 ` Richard W.M. Jones
2016-04-01 19:15 ` Richard W.M. Jones
2016-04-01 19:44 ` Kevin O'Connor
2016-04-01 20:25 ` Richard W.M. Jones [this message]
2016-04-01 20:05 ` Kevin O'Connor
2016-04-01 20:46 ` Richard W.M. Jones
2016-04-01 22:25 ` Kevin O'Connor
2016-04-02 7:51 ` Richard W.M. Jones
2016-04-02 5:30 ` Paolo Bonzini
2016-04-01 15:08 ` Kevin O'Connor
2016-04-01 14:58 ` Kevin O'Connor
2016-04-01 15:06 ` Richard W.M. Jones
2016-04-01 15:14 ` Kevin O'Connor
2016-04-01 8:19 ` Richard W.M. Jones
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