Re: [PATCH net-next] virtio_net: force_napi_tx module param.
From: "Michael S. Tsirkin" <mst@redhat.com>
Date: 2018-07-24 23:55:21
On Tue, Jul 24, 2018 at 06:31:54PM -0400, Willem de Bruijn wrote:
On Tue, Jul 24, 2018 at 6:23 PM Michael S. Tsirkin [off-list ref] wrote:quoted
On Tue, Jul 24, 2018 at 04:52:53PM -0400, Willem de Bruijn wrote:quoted
quoted
From the above linked patch, I understand that there are yetother special cases in production, such as a hard cap on #tx queues to 32 regardless of number of vcpus.I don't think upstream kernels have this limit - we can now use vmalloc for higher number of queues.Yes. that patch* mentioned it as a google compute engine imposed limit. It is exactly such cloud provider imposed rules that I'm concerned about working around in upstream drivers. * for reference, I mean https://patchwork.ozlabs.org/patch/725249/
Yea. Why does GCE do it btw? -- MST