On Mon, Mar 10, 2025 at 8:56 AM Nhat Pham <nphamcs@xxxxxxxxx> wrote: > > On Sat, Mar 8, 2025 at 5:05 PM Hillf Danton <hdanton@xxxxxxxx> wrote: > > > > Could you explain what nr_kcompressd means, Qun-Wei, to quiesce barking lads? > > Who's the "barking lads" you are referring to? Please mind your language. I also feel extremely uncomfortable. In Eastern culture, this is an extremely vulgar word, more offensive than any others. I strongly feel that this violates the mutual respect within the Linux community. This is a serious case of verbal abuse. Regardless of the existence of nr_kcompressd, it is still unacceptable to invent an interface that requires users to figure out how to set it up, while kswapd can launch threads based on NUMA nodes. This should be transparent to users, just as kswapd does. void __meminit kswapd_run(int nid) { ... if (!pgdat->kswapd) { pgdat->kswapd = kthread_create_on_node(kswapd, pgdat, nid, "kswapd%d", nid); ... } pgdat_kswapd_unlock(pgdat); } On the other hand, no one will know how to set up the proper number of threads, while direct reclaim can utilize each CPU. Therefore, listing nr_kcompressd does not change the essence of my question. Thanks Barry