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Date: Wed, 19 May 2010 13:33:20 -0700 From: Yinghai Lu <yinghai@...nel.org> To: zhou rui <wirelesser@...il.com> Cc: netdev@...r.kernel.org Subject: Re: how many msi (msi-x) vectors can be setup? On Wed, May 19, 2010 at 8:18 AM, zhou rui <wirelesser@...il.com> wrote: > hi there: > how many msi (msi-x) vectors can be setup? > the number is limited by hardware resource(nic), or kernel ? > I found that the driver (broadcom 57711 ver 1.5.12) tried to request > 16 queues on my kernel2.6.27,but only 2 available > will it be increased if I update the driver or kernel? > and there is a limitiation in the system? if the other devices have > already occupied too many MSI vectors then it is not enough. from kernel 2.6.19 x86_64, there is per-cpu vector irq support. depends your system : CPU num? 64bit or 32bit. YH -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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