From: Avi Kivity <avi@qumranet.com>
To: Ben-Ami Yassour <benami@il.ibm.com>
Cc: amit.shah@qumranet.com, kvm@vger.kernel.org, muli@il.ibm.com,
weidong.han@intel.com, anthony@codemonkey.ws
Subject: Re: PCI passthrough with VT-d - native performance
Date: Wed, 16 Jul 2008 17:36:29 +0300 [thread overview]
Message-ID: <487E076D.4050306@qumranet.com> (raw)
In-Reply-To: <1216214225-18030-1-git-send-email-benami@il.ibm.com>
Ben-Ami Yassour wrote:
> In last few tests that we made with PCI-passthrough and VT-d using
> iperf, we were able to get the same throughput as on native OS with a 1G
> NIC
Excellent!
> (with higher CPU utilization).
>
How much higher?
> The following patches are the PCI-passthrough patches that Amit sent
> (re-based on the last kvm tree), followed by a few improvements and the
> VT-d extension.
> I am also sending the userspace patches: the patch that Amit sent for
> PCI passthrough and the direct-mmio extension for userspace (note that
> without the direct mmio extension we get less then half the throughput).
>
Is mmio passthrough the reason for the performance improvement? If not,
what was the problem?
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2008-07-16 14:36 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-16 13:16 PCI passthrough with VT-d - native performance Ben-Ami Yassour
2008-07-16 13:16 ` [PATCH 1/8] KVM: Introduce a callback routine for IOAPIC ack handling Ben-Ami Yassour
2008-07-16 13:16 ` [PATCH 2/8] KVM: Introduce a callback routine for PIC " Ben-Ami Yassour
2008-07-16 13:17 ` [PATCH 3/8] KVM: Handle device assignment to guests Ben-Ami Yassour
2008-07-16 13:17 ` [PATCH 4/8] KVM: PCIPT: fix interrupt handling Ben-Ami Yassour
2008-07-16 13:17 ` [PATCH 5/8] KVM: PCIPT: change order of device release Ben-Ami Yassour
2008-07-16 13:17 ` [PATCH 6/8] VT-d: changes to support KVM Ben-Ami Yassour
2008-07-16 13:17 ` [PATCH 7/8] KVM: PCIPT: VT-d support Ben-Ami Yassour
2008-07-16 13:17 ` [PATCH 8/8] KVM: PCIPT: VT-d: dont map mmio memory slots Ben-Ami Yassour
2008-07-16 13:21 ` PCI passthrough with VT-d - native performance Ben-Ami Yassour
2008-07-16 13:21 ` [PATCH 1/2] KVM/userspace: Support for assigning PCI devices to guest Ben-Ami Yassour
2008-07-16 13:21 ` [PATCH 2/2] PCIPT: direct mmio Ben-Ami Yassour
2008-07-17 7:52 ` [PATCH 1/2] KVM/userspace: Support for assigning PCI devices to guest Han, Weidong
2008-07-22 12:28 ` Ben-Ami Yassour
2008-07-22 12:44 ` [PATCH 1/2] KVM/userspace: Support for assigning PCI devicesto guest Han, Weidong
2008-07-16 15:06 ` [PATCH 5/8] KVM: PCIPT: change order of device release Avi Kivity
2008-07-16 15:06 ` [PATCH 4/8] KVM: PCIPT: fix interrupt handling Avi Kivity
2008-07-23 13:37 ` Amit Shah
2008-07-24 11:28 ` Ben-Ami Yassour
2008-07-24 13:31 ` Amit Shah
2008-07-24 14:24 ` Ben-Ami Yassour
2008-07-16 15:04 ` [PATCH 3/8] KVM: Handle device assignment to guests Avi Kivity
2008-07-17 2:09 ` Han, Weidong
2008-07-17 2:29 ` Yang, Sheng
2008-07-17 6:02 ` Avi Kivity
2008-07-17 8:23 ` Ben-Ami Yassour
2008-07-17 8:31 ` Avi Kivity
2008-07-17 18:01 ` Ben-Ami Yassour
2008-07-17 18:07 ` Avi Kivity
2008-07-17 9:34 ` Ben-Ami Yassour
2008-07-17 9:50 ` Avi Kivity
2008-07-17 17:40 ` Ben-Ami Yassour
2008-07-17 18:04 ` Avi Kivity
2008-07-16 14:36 ` Avi Kivity [this message]
2008-07-16 15:18 ` PCI passthrough with VT-d - native performance Ben-Ami Yassour
2008-07-16 15:22 ` Avi Kivity
2008-07-16 15:23 ` Anthony Liguori
2008-07-16 16:13 ` Ben-Ami Yassour
2008-07-16 16:57 ` Avi Kivity
2008-07-17 6:24 ` Ben-Ami Yassour
2008-07-17 3:20 ` Han, Weidong
-- strict thread matches above, loose matches on Subject: below --
2008-07-16 15:56 Ben-Ami Yassour
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