* [Qemu-devel] [Bug 1091241] [NEW] NetBSD/i386 6.0 guest suffers interrupt storm since qemu BIOS update
@ 2012-12-17 14:15 Andreas Gustafsson
2013-01-05 20:28 ` [Qemu-devel] [Bug 1091241] " Andreas Gustafsson
2013-05-20 17:33 ` Aurelien Jarno
0 siblings, 2 replies; 3+ messages in thread
From: Andreas Gustafsson @ 2012-12-17 14:15 UTC (permalink / raw)
To: qemu-devel
Public bug reported:
Since the pc-bios update of qemu commit
d7a51dbbaa70677846453f8c961590913052dd86, booting a NetBSD/i386 guest
takes a very long time, apparently due to interrupt load.
For example, booting the NetBSD/i386 6.0 serial console install CD with
wget ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-6.0/i386/installation/cdrom/boot-com.iso
qemu-system-i386 -nographic -cdrom boot-com.iso
used to take less than a minute, but now takes more like ten minutes to
enter the "sysinst" installer; it's so slow that at first I thought it
had hung. If I then exit the installer and type "vmstat -i", it shows a
high interrupt rate on ioapic0 pin 9:
# vmstat -i
interrupt total rate
cpu0 timer 336942 102
ioapic0 pin 9 256791232 78052
ioapic0 pin 1 1 0
ioapic0 pin 15 345 0
ioapic0 pin 4 102 0
ioapic0 pin 6 1 0
Total 257128623 78154
According to dmesg, this is the piixpm0 device:
# dmesg
[...]
piixpm0 at pci0 dev 1 function 3: vendor 0x8086 product 0x7113 (rev. 0x03)
timecounter: Timecounter "piixpm0" frequency 3579545 Hz quality 1000
piixpm0: 24-bit timer
piixpm0: interrupting at ioapic0 pin 9
[...]
Versions of qemu lacking commit d7a51dbbaa70677846453f8c961590913052dd86
do not have this problem.
** Affects: qemu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1091241
Title:
NetBSD/i386 6.0 guest suffers interrupt storm since qemu BIOS update
Status in QEMU:
New
Bug description:
Since the pc-bios update of qemu commit
d7a51dbbaa70677846453f8c961590913052dd86, booting a NetBSD/i386 guest
takes a very long time, apparently due to interrupt load.
For example, booting the NetBSD/i386 6.0 serial console install CD
with
wget ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-6.0/i386/installation/cdrom/boot-com.iso
qemu-system-i386 -nographic -cdrom boot-com.iso
used to take less than a minute, but now takes more like ten minutes
to enter the "sysinst" installer; it's so slow that at first I thought
it had hung. If I then exit the installer and type "vmstat -i", it
shows a high interrupt rate on ioapic0 pin 9:
# vmstat -i
interrupt total rate
cpu0 timer 336942 102
ioapic0 pin 9 256791232 78052
ioapic0 pin 1 1 0
ioapic0 pin 15 345 0
ioapic0 pin 4 102 0
ioapic0 pin 6 1 0
Total 257128623 78154
According to dmesg, this is the piixpm0 device:
# dmesg
[...]
piixpm0 at pci0 dev 1 function 3: vendor 0x8086 product 0x7113 (rev. 0x03)
timecounter: Timecounter "piixpm0" frequency 3579545 Hz quality 1000
piixpm0: 24-bit timer
piixpm0: interrupting at ioapic0 pin 9
[...]
Versions of qemu lacking commit
d7a51dbbaa70677846453f8c961590913052dd86 do not have this problem.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1091241/+subscriptions
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Qemu-devel] [Bug 1091241] Re: NetBSD/i386 6.0 guest suffers interrupt storm since qemu BIOS update
2012-12-17 14:15 [Qemu-devel] [Bug 1091241] [NEW] NetBSD/i386 6.0 guest suffers interrupt storm since qemu BIOS update Andreas Gustafsson
@ 2013-01-05 20:28 ` Andreas Gustafsson
2013-05-20 17:33 ` Aurelien Jarno
1 sibling, 0 replies; 3+ messages in thread
From: Andreas Gustafsson @ 2013-01-05 20:28 UTC (permalink / raw)
To: qemu-devel
The bug has been fixed; revisoion
5928023cef87847a295035487397b9ec701fdd6b is still broken, but
dbd99ae302be8f51b547fb6283c91d0c9859b7d5 works. I haven't determined
which of the commits inbetween fixed it, but the BIOS update of
15faf946f7a17a5fab0d05a2312d43249d81af3 seems like a likely candidate.
** Changed in: qemu
Status: New => Fix Committed
--
You received this bug notification because you are a member of qemu-
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https://bugs.launchpad.net/bugs/1091241
Title:
NetBSD/i386 6.0 guest suffers interrupt storm since qemu BIOS update
Status in QEMU:
Fix Committed
Bug description:
Since the pc-bios update of qemu commit
d7a51dbbaa70677846453f8c961590913052dd86, booting a NetBSD/i386 guest
takes a very long time, apparently due to interrupt load.
For example, booting the NetBSD/i386 6.0 serial console install CD
with
wget ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-6.0/i386/installation/cdrom/boot-com.iso
qemu-system-i386 -nographic -cdrom boot-com.iso
used to take less than a minute, but now takes more like ten minutes
to enter the "sysinst" installer; it's so slow that at first I thought
it had hung. If I then exit the installer and type "vmstat -i", it
shows a high interrupt rate on ioapic0 pin 9:
# vmstat -i
interrupt total rate
cpu0 timer 336942 102
ioapic0 pin 9 256791232 78052
ioapic0 pin 1 1 0
ioapic0 pin 15 345 0
ioapic0 pin 4 102 0
ioapic0 pin 6 1 0
Total 257128623 78154
According to dmesg, this is the piixpm0 device:
# dmesg
[...]
piixpm0 at pci0 dev 1 function 3: vendor 0x8086 product 0x7113 (rev. 0x03)
timecounter: Timecounter "piixpm0" frequency 3579545 Hz quality 1000
piixpm0: 24-bit timer
piixpm0: interrupting at ioapic0 pin 9
[...]
Versions of qemu lacking commit
d7a51dbbaa70677846453f8c961590913052dd86 do not have this problem.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1091241/+subscriptions
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Qemu-devel] [Bug 1091241] Re: NetBSD/i386 6.0 guest suffers interrupt storm since qemu BIOS update
2012-12-17 14:15 [Qemu-devel] [Bug 1091241] [NEW] NetBSD/i386 6.0 guest suffers interrupt storm since qemu BIOS update Andreas Gustafsson
2013-01-05 20:28 ` [Qemu-devel] [Bug 1091241] " Andreas Gustafsson
@ 2013-05-20 17:33 ` Aurelien Jarno
1 sibling, 0 replies; 3+ messages in thread
From: Aurelien Jarno @ 2013-05-20 17:33 UTC (permalink / raw)
To: qemu-devel
** Changed in: qemu
Status: Fix Committed => Fix Released
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1091241
Title:
NetBSD/i386 6.0 guest suffers interrupt storm since qemu BIOS update
Status in QEMU:
Fix Released
Bug description:
Since the pc-bios update of qemu commit
d7a51dbbaa70677846453f8c961590913052dd86, booting a NetBSD/i386 guest
takes a very long time, apparently due to interrupt load.
For example, booting the NetBSD/i386 6.0 serial console install CD
with
wget ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-6.0/i386/installation/cdrom/boot-com.iso
qemu-system-i386 -nographic -cdrom boot-com.iso
used to take less than a minute, but now takes more like ten minutes
to enter the "sysinst" installer; it's so slow that at first I thought
it had hung. If I then exit the installer and type "vmstat -i", it
shows a high interrupt rate on ioapic0 pin 9:
# vmstat -i
interrupt total rate
cpu0 timer 336942 102
ioapic0 pin 9 256791232 78052
ioapic0 pin 1 1 0
ioapic0 pin 15 345 0
ioapic0 pin 4 102 0
ioapic0 pin 6 1 0
Total 257128623 78154
According to dmesg, this is the piixpm0 device:
# dmesg
[...]
piixpm0 at pci0 dev 1 function 3: vendor 0x8086 product 0x7113 (rev. 0x03)
timecounter: Timecounter "piixpm0" frequency 3579545 Hz quality 1000
piixpm0: 24-bit timer
piixpm0: interrupting at ioapic0 pin 9
[...]
Versions of qemu lacking commit
d7a51dbbaa70677846453f8c961590913052dd86 do not have this problem.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1091241/+subscriptions
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2013-05-20 17:41 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2012-12-17 14:15 [Qemu-devel] [Bug 1091241] [NEW] NetBSD/i386 6.0 guest suffers interrupt storm since qemu BIOS update Andreas Gustafsson
2013-01-05 20:28 ` [Qemu-devel] [Bug 1091241] " Andreas Gustafsson
2013-05-20 17:33 ` Aurelien Jarno
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