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[Xen-devel][PV-ops][PATCH 0/2] VNIF: Using smart polling instead of even
| To: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel][PV-ops][PATCH 0/2] VNIF: Using smart polling instead of event notification. |
| From: | "Xu, Dongxiao" <dongxiao.xu@xxxxxxxxx> |
| Date: | Thu, 1 Oct 2009 02:17:12 +0800 |
| Accept-language: | en-US |
| Acceptlanguage: | en-US |
| Cc: | "jeremy@xxxxxxxx" <jeremy@xxxxxxxx> |
| Delivery-date: | Wed, 30 Sep 2009 11:17:38 -0700 |
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| Thread-index: | AQHKQfo7obuMRj2uMEKvPVE1dSOYJw== |
| Thread-topic: | [Xen-devel][PV-ops][PATCH 0/2] VNIF: Using smart polling instead of event notification. |
Resend the patch and CC Jeremy. One of the VNIF driver's scalability issues is the high event channel frequency. It's highly related to physical NIC's interrupt frequency in dom0, which could be 20K HZ in some situation. The high frequency event channel notification makes the guest and dom0 CPU utilization at a high value, especially in multi-VM cases. The following two patches uses smart polling mechanism to replace event notification to reduce the CPU Utilization. Signed-off-by: Dongxiao Xu <dongxiao.xu@xxxxxxxxx> Best Regards, -- Dongxiao _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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