Re: [Qemu-devel] Windows slow boot: contractor wanted

2012-08-16 Thread Benoît Canet
Le Thursday 16 Aug 2012 à 11:47:27 (+0100), Richard Davies a écrit : > Hi, > > We run a cloud hosting provider using qemu-kvm 1.1, and are keen to find a > contractor to track down and fix problems we have with large memory Windows > guests booting very slowly - they can take several hours. > > W

APIC-V and QEMU block IO performance

2013-03-01 Thread Benoît Canet
Hello lists, As a QEMU developper I am looking for a way to help improving qemu/kvm block performance for $customer. Having read about APIC-V on #qemu I looked at the intel manual in order to have an idea of what is an APIC and what is APIC-V. Here is a summary that I am posting so it can help

[PATCH V3] forward cpuid leaves when using -cpu host

2013-09-02 Thread Benoît Canet
cache flags cleanup [Andrea] v2: use index as argument to cpuid_host Benoît Canet (1): target-i386: forward CPUID cache leaves when -cpu host is used target-i386/cpu-qom.h |3 +++ target-i386/cpu.c | 19 +++ 2 files changed, 22 insertions(+) -- 1.7.10.4 -- To

[PATCH V3] target-i386: forward CPUID cache leaves when -cpu host is used

2013-09-02 Thread Benoît Canet
Some users running cpu intensive tasks checking the cache CPUID leaves at startup and making decisions based on the result reported that the guest was not reflecting the host CPUID leaves when -cpu host is used. This patch fix this. Signed-off-by: Benoit Canet --- target-i386/cpu-qom.h |3 +

Re: [Qemu-devel] [PATCH V3] target-i386: forward CPUID cache leaves when -cpu host is used

2013-09-02 Thread Benoît Canet
> > > > Signed-off-by: Benoit Canet > > Reviewed-by: Eduardo Habkost Thanks. Do you have an idea on how QEMU could reflect the real host clock frequency to the guest when the host cpu scaling governor kicks in ? Giving a false value to cloud customers is mildly annoying. Best regards Benoît

Re: [Qemu-devel] [PATCH V3] target-i386: forward CPUID cache leaves when -cpu host is used

2013-09-19 Thread Benoît Canet
Le Monday 02 Sep 2013 à 13:19:16 (-0300), Eduardo Habkost a écrit : > On Mon, Sep 02, 2013 at 05:06:37PM +0200, Benoît Canet wrote: > > Some users running cpu intensive tasks checking the cache CPUID leaves at > > startup and making decisions based on the result reported that the gu