* [Bug 1883593] Re: Windows XP takes much longer to boot in TCG mode since 5.0
2020-06-15 19:41 [Bug 1883593] [NEW] Windows XP takes much longer to boot in TCG mode since 5.0 Randy Rhoads
@ 2020-06-16 16:48 ` Alex Bennée
2020-06-18 0:00 ` Randy Rhoads
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Alex Bennée @ 2020-06-16 16:48 UTC (permalink / raw)
To: qemu-devel
Are you able to bisect between 4.2 and 5.0 and identify what introduces
the slow down?
** Tags added: tcg
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https://bugs.launchpad.net/bugs/1883593
Title:
Windows XP takes much longer to boot in TCG mode since 5.0
Status in QEMU:
New
Bug description:
Since upgrading from 4.2 to 5.0, a Windows XP VM takes much longer to
boot.
It hangs about three minutes on "welcome" screen with the blue
background, while previously the total boot time was less than a
minute.
The issue only happens in TCG mode (not with KVM) and also happens
with the current master which includes the uring patches (7d3660e7).
I can reproduce this issue with a clean XP install with no flags other
than `-m 2G`. After booting, the performance seems to be normal.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1883593/+subscriptions
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug 1883593] Re: Windows XP takes much longer to boot in TCG mode since 5.0
2020-06-15 19:41 [Bug 1883593] [NEW] Windows XP takes much longer to boot in TCG mode since 5.0 Randy Rhoads
2020-06-16 16:48 ` [Bug 1883593] " Alex Bennée
@ 2020-06-18 0:00 ` Randy Rhoads
2021-05-06 16:52 ` Thomas Huth
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Randy Rhoads @ 2020-06-18 0:00 UTC (permalink / raw)
To: qemu-devel
Bisecting showed that this is the bad commit:
b55f54bc965607c45b5010a107a792ba333ba654 exec: flush CPU TB cache in
breakpoint_invalidate
And I can indeed confirm that this commit is much slower than the
previous one, e18e5501d8ac692d32657a3e1ef545b14e72b730.
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https://bugs.launchpad.net/bugs/1883593
Title:
Windows XP takes much longer to boot in TCG mode since 5.0
Status in QEMU:
New
Bug description:
Since upgrading from 4.2 to 5.0, a Windows XP VM takes much longer to
boot.
It hangs about three minutes on "welcome" screen with the blue
background, while previously the total boot time was less than a
minute.
The issue only happens in TCG mode (not with KVM) and also happens
with the current master which includes the uring patches (7d3660e7).
I can reproduce this issue with a clean XP install with no flags other
than `-m 2G`. After booting, the performance seems to be normal.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1883593/+subscriptions
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug 1883593] Re: Windows XP takes much longer to boot in TCG mode since 5.0
2020-06-15 19:41 [Bug 1883593] [NEW] Windows XP takes much longer to boot in TCG mode since 5.0 Randy Rhoads
2020-06-16 16:48 ` [Bug 1883593] " Alex Bennée
2020-06-18 0:00 ` Randy Rhoads
@ 2021-05-06 16:52 ` Thomas Huth
2021-06-10 13:27 ` Peter Maydell
2021-06-10 13:53 ` Thomas Huth
4 siblings, 0 replies; 6+ messages in thread
From: Thomas Huth @ 2021-05-06 16:52 UTC (permalink / raw)
To: qemu-devel
The QEMU project is currently moving its bug tracking to another system.
For this we need to know which bugs are still valid and which could be
closed already. Thus we are setting older bugs to "Incomplete" now.
If the bug has already been fixed in the latest upstream version of QEMU,
then please close this ticket as "Fix released".
If it is not fixed yet and you think that this bug report here is still
valid, then you have two options:
1) If you already have an account on gitlab.com, please open a new ticket
for this problem in our new tracker here:
https://gitlab.com/qemu-project/qemu/-/issues
and then close this ticket here on Launchpad (or let it expire auto-
matically after 60 days). Please mention the URL of this bug ticket on
Launchpad in the new ticket on GitLab.
2) If you don't have an account on gitlab.com and don't intend to get
one, but still would like to keep this ticket opened, then please switch
the state back to "New" within the next 60 days (otherwise it will get
closed as "Expired"). We will then eventually migrate the ticket auto-
matically to the new system.
Thank you and sorry for the inconvenience.
** Changed in: qemu
Status: New => Incomplete
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You received this bug notification because you are a member of qemu-
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https://bugs.launchpad.net/bugs/1883593
Title:
Windows XP takes much longer to boot in TCG mode since 5.0
Status in QEMU:
Incomplete
Bug description:
Since upgrading from 4.2 to 5.0, a Windows XP VM takes much longer to
boot.
It hangs about three minutes on "welcome" screen with the blue
background, while previously the total boot time was less than a
minute.
The issue only happens in TCG mode (not with KVM) and also happens
with the current master which includes the uring patches (7d3660e7).
I can reproduce this issue with a clean XP install with no flags other
than `-m 2G`. After booting, the performance seems to be normal.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1883593/+subscriptions
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug 1883593] Re: Windows XP takes much longer to boot in TCG mode since 5.0
2020-06-15 19:41 [Bug 1883593] [NEW] Windows XP takes much longer to boot in TCG mode since 5.0 Randy Rhoads
` (2 preceding siblings ...)
2021-05-06 16:52 ` Thomas Huth
@ 2021-06-10 13:27 ` Peter Maydell
2021-06-10 13:53 ` Thomas Huth
4 siblings, 0 replies; 6+ messages in thread
From: Peter Maydell @ 2021-06-10 13:27 UTC (permalink / raw)
To: qemu-devel
** Changed in: qemu
Status: Incomplete => New
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1883593
Title:
Windows XP takes much longer to boot in TCG mode since 5.0
Status in QEMU:
New
Bug description:
Since upgrading from 4.2 to 5.0, a Windows XP VM takes much longer to
boot.
It hangs about three minutes on "welcome" screen with the blue
background, while previously the total boot time was less than a
minute.
The issue only happens in TCG mode (not with KVM) and also happens
with the current master which includes the uring patches (7d3660e7).
I can reproduce this issue with a clean XP install with no flags other
than `-m 2G`. After booting, the performance seems to be normal.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1883593/+subscriptions
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug 1883593] Re: Windows XP takes much longer to boot in TCG mode since 5.0
2020-06-15 19:41 [Bug 1883593] [NEW] Windows XP takes much longer to boot in TCG mode since 5.0 Randy Rhoads
` (3 preceding siblings ...)
2021-06-10 13:27 ` Peter Maydell
@ 2021-06-10 13:53 ` Thomas Huth
4 siblings, 0 replies; 6+ messages in thread
From: Thomas Huth @ 2021-06-10 13:53 UTC (permalink / raw)
To: qemu-devel
This is an automated cleanup. This bug report has been moved to QEMU's
new bug tracker on gitlab.com and thus gets marked as 'expired' now.
Please continue with the discussion here:
https://gitlab.com/qemu-project/qemu/-/issues/404
** Changed in: qemu
Status: New => Expired
** Bug watch added: gitlab.com/qemu-project/qemu/-/issues #404
https://gitlab.com/qemu-project/qemu/-/issues/404
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1883593
Title:
Windows XP takes much longer to boot in TCG mode since 5.0
Status in QEMU:
Expired
Bug description:
Since upgrading from 4.2 to 5.0, a Windows XP VM takes much longer to
boot.
It hangs about three minutes on "welcome" screen with the blue
background, while previously the total boot time was less than a
minute.
The issue only happens in TCG mode (not with KVM) and also happens
with the current master which includes the uring patches (7d3660e7).
I can reproduce this issue with a clean XP install with no flags other
than `-m 2G`. After booting, the performance seems to be normal.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1883593/+subscriptions
^ permalink raw reply [flat|nested] 6+ messages in thread