From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eran Rom <eranr@il.ibm.com>
Subject: Re: guest gettimeofday behavior
Date: Mon, 6 Jul 2009 08:24:07 +0000 (UTC)
Message-ID: <loom.20090706T081604-11@post.gmane.org>
References: <loom.20090625T130343-552@post.gmane.org> <4A4730B9.1090902@redhat.com> <loom.20090629T182016-191@post.gmane.org> <4A49B6A5.4090801@redhat.com> <loom.20090630T074707-606@post.gmane.org>
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Eran Rom <eranr <at> il.ibm.com> writes:

> 
> Avi Kivity <avi <at> redhat.com> writes:
> 
> > 2.6.27 has kvmclock.
> > 
> Thanks a lot!
> Will try the kvmclock
> Eran 
> 
Still getting a misbehaving clock:
guest uses kvmclock with kernel 2.6.27
host kernel is 2.6.27 with kvm-qemu-87 & kvm-kmod-87

doing:
now = gettimeofday
goal = now + 10 minutes
while (now < goal) {
    sleep(10)
    now = gettimeofday
    print(now)
}

getting:
...
now     =       2098031895
now     =       2108035868
now     =       2118039818
now     =       2128043797
now     =       2138048010
now     =       18446744071562636328

Thanks very much,
Eran