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Re: [Qemu-devel] [RFC PATCH v3 29/30] replay: improve replay performance
From: |
Pavel Dovgalyuk |
Subject: |
Re: [Qemu-devel] [RFC PATCH v3 29/30] replay: improve replay performance |
Date: |
Fri, 12 Jan 2018 09:13:50 +0300 |
> From: Paolo Bonzini [mailto:address@hidden
> On 11/01/2018 14:12, Pavel Dovgalyuk wrote:
> >> From: Paolo Bonzini [mailto:address@hidden On Behalf Of Paolo Bonzini
> >> On 11/01/2018 09:27, Pavel Dovgalyuk wrote:
> >>> + } else {
> >>> + qemu_notify_event();
> >>> + }
> >>
> >> Before this patch, what would do the qemu_notify_event?
> >
> > We tried using qemu_notify_event to wake up the iothread and speedup the
> > replay,
> > when there is no work for vcpu thread to do.
>
> But why doesn't the iothread wake up on its own?
It will wake up by timeout. But with this change this happens sooner and replay
goes faster.
Pavel Dovgalyuk
- [Qemu-devel] [RFC PATCH v3 23/30] replay: avoid recursive call of checkpoints, (continued)
- [Qemu-devel] [RFC PATCH v3 23/30] replay: avoid recursive call of checkpoints, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 24/30] scripts/qemu-gdb: add simple tcg lock status helper, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 25/30] util/qemu-thread-*: add qemu_lock, locked and unlock trace events, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 26/30] scripts/analyse-locks-simpletrace.py: script to analyse lock times, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 27/30] scripts/replay-dump.py: replay log dumper, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 28/30] scripts/qemu-gdb/timers.py: new helper to dump timer state, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 29/30] replay: improve replay performance, Pavel Dovgalyuk, 2018/01/11
[Qemu-devel] [RFC PATCH v3 30/30] replay: don't process async events when warping the clock, Pavel Dovgalyuk, 2018/01/11
Re: [Qemu-devel] [RFC PATCH v3 00/30] replay additions, no-reply, 2018/01/11
Re: [Qemu-devel] [RFC PATCH v3 00/30] replay additions, no-reply, 2018/01/11
Re: [Qemu-devel] [RFC PATCH v3 00/30] replay additions, Paolo Bonzini, 2018/01/11