Re: kern/57558: pgdaemon 100% busy - no scanning (ZFS case)

[Frank Kardel <kardel%netbsd.org@localhost>]

Thanks for that simpler fix to avoid the starvation state. Test have 
shown that that works in the

environment.

I am wondering, though, whether something needs to be done for the other 
cases.

-Frank


On 05/06/24 08:05, Chuck Silvers wrote:
> [snip]
> I think the right fix for this is to increase the amount of kmem space that we
> allocate such that all of physical memory can be allocated as kmem without
> the pagedaemon considering the system to be starved for kmem virtual space.
> this means allocating an enough kmem space for 10/9 of physical memory,
> so that even though only 9/10 of kmem virtual space can be used, there is still
> enough kmem virtual space available for all of physical memory.
>
> please try the attached patch.
>
> -Chuck