From: Alexandre Raymond <cerbere@gmail.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Anthony Liguori <aliguori@us.ibm.com>,
qemu-devel <qemu-devel@nongnu.org>, kvm <kvm@vger.kernel.org>,
Sasha Levin <levinsasha928@gmail.com>
Subject: Re: [Qemu-devel] [RFC][PATCH] Register Linux dyntick timer as per-thread signal
Date: Thu, 16 Jun 2011 11:24:54 -0400 [thread overview]
Message-ID: <BANLkTinarwP=AwG_KFm0B3moFYbQOQ2SbQ@mail.gmail.com> (raw)
In-Reply-To: <4DF9CD7E.5020509@siemens.com>
Hi Jan,
On Thu, Jun 16, 2011 at 5:31 AM, Jan Kiszka <jan.kiszka@siemens.com> wrote:
> Ingo Molnar pointed out that sending the timer signal to the whole
> process, just blocking it everywhere, is suboptimal with an increasing
> number of threads. QEMU is using this pattern so far.
I am not familiar with this code, but don't you already need to block
SIGALRM properly in all threads for OSes != Linux ? If so, isn't this
patch redundant?
Alexandre
next prev parent reply other threads:[~2011-06-16 15:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-16 9:31 [Qemu-devel] [RFC][PATCH] Register Linux dyntick timer as per-thread signal Jan Kiszka
2011-06-16 10:26 ` Ingo Molnar
2011-06-16 14:39 ` Richard Henderson
2011-06-16 15:24 ` Alexandre Raymond [this message]
2011-06-17 9:25 ` Jan Kiszka
2011-06-17 9:25 ` [Qemu-devel] [PATCH v2] " Jan Kiszka
2011-06-17 18:06 ` Richard Henderson
2011-07-23 16:52 ` Anthony Liguori
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