On Mon, Nov 21, 2022 at 5:53 PM Ivan Babrou <ivan@xxxxxxxxxxxxxx> wrote: > > Hello, > > We have observed a negative TCP throughput behavior from the following commit: > > * 8e8ae645249b mm: memcontrol: hook up vmpressure to socket pressure > > It landed back in 2016 in v4.5, so it's not exactly a new issue. > > The crux of the issue is that in some cases with swap present the > workload can be unfairly throttled in terms of TCP throughput. > > I am able to reproduce this issue in a VM locally on v6.1-rc6 with 8 > GiB of RAM with zram enabled. Hi Ivan, If it's not too much trouble, could you try again with the following? CONFIG_LRU_GEN=y CONFIG_LRU_GEN_ENABLED=y I haven't tried it myself. But I'll fix whatever doesn't work for you, since your team is on the top of my customer list :) Thanks.
