[pve-devel] [PATCH qemu-server] cfg2cmd: netdev: fix value for tx_queue_size

DERUMIER, Alexandre alexandre.derumier at groupe-cyllene.com
Tue Jul 11 15:52:31 CEST 2023

Le mardi 11 juillet 2023 à 12:57 +0200, Fiona Ebner a écrit :
> @Alexandre: in the commit message of 620d6b32 ("virtio-net: increase
> defaults rx|tx-queue-size to 1024") you talk about DPDK, but isn't
> vhost-user required for that? And I didn't see where we expose
> vhost-user (vhost-net is different AFAICT)?
as far I remember, I thinked it was a limitation on guest side virtio-
nic driver. (as qemu was accepting up to 1024).

Should be fine to downgrade it to 256 without breaking live migration.

(for dpdk indeed it need vhost-uset, not currently implemented)

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