On 3/22/22 16:05, Michal Privoznik wrote: > Since its commit v5.0.0-rc0~75^2~1^2~3 QEMU is capable of > specifying number of threads used to allocate memory. While it > defaults to the number of vCPUs, users might want to use a > different value (especially for humongous guests with gigantic > pages). Err, this statement is not correct. The default value is 1 and not number of vCPUs. If it was numbed of vCPUs then these patches would be that necessary. I've reworded this paragraph locally to: Since its commit v5.0.0-rc0~75^2~1^2~3 QEMU is capable of specifying number of threads used to allocate memory. It defaults to 1, which may be too low for humongous guests with gigantic pages. Thank to David Hildebrand for pointing this out to me. Michal
