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[Xen-devel] [PATCH] Add DOM0_GETDOMAININFOLIST op for bulk retrieval of
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | [Xen-devel] [PATCH] Add DOM0_GETDOMAININFOLIST op for bulk retrieval of domain info |
| From: | Josh Triplett <josht@xxxxxxxxxx> |
| Date: | Fri, 24 Jun 2005 16:07:36 -0700 |
| Delivery-date: | Fri, 24 Jun 2005 23:06:38 +0000 |
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The attached patch adds a new dom0_op, DOM0_GETDOMAININFOLIST. This operation allows retrieval of the domain info structures for all domains in one hypercall. Using a small test program, on a system with 97 domains with non-contiguous domain IDs, I found that with this hypercall I could retrieve the full array of info structures 12840 times per second, an improvement from 2380 times per second with the DOM0_GETDOMAININFO op. The patch also adds a libxc wrapper for this new hypercall. - Josh Triplett
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