[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] netfront/netback multiqueue exhausting grants
On 01/22/2016 03:53 PM, Jan Beulich wrote: >>>> On 22.01.16 at 04:36, <bob.liu@xxxxxxxxxx> wrote: >> By the way, do you think it's possible to make grant table support bigger >> page e.g 64K? >> One grant-ref per 64KB instead of 4KB, this should able to reduce the grant >> entry consumption significantly. > > How would that work with an underlying page size of 4k, and pages > potentially being non-contiguous in machine address space? Besides > that the grant table hypercall interface isn't prepared to support > 64k page size, due to its use of uint16_t for the length of copy ops. > Right, and I mean whether we should consider address all the place as your mentioned. With multi-queue xen-block and xen-network, we got more reports that the grants were exhausted. -- Regards, -Bob _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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