On Mon, Apr 11, 2022 at 8:16 PM Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > On Wed, 6 Apr 2022 21:15:24 -0600 Yu Zhao <yuzhao@xxxxxxxxxx> wrote: > > > Add /sys/kernel/debug/lru_gen for working set estimation and proactive > > reclaim. These features are required to optimize job scheduling (bin > > packing) in data centers [1][2]. > > debugfs is for ephemeral temp stuf which can and will change or > disappear at any time. Anything which is "required" by userspace > should not be in debufgs. Right. "required" is probably a poor choice of words. "These techniques are commonly used to optimize job scheduling" would sound better. > Presumably sysfs is the place. Fully documented and with usage > examples in the changelog so we can carefully review the proposed > extensions to Linux's ABI. Extensions which must be maintained > unchanged for all time. Eventually, yes. There still is a long way to go. Rest assured, this is something Google will keep investing resources on.
