> Date: Wed, 15 Jul 2026 11:42:00 -0400 > From: Greg Troxel <[email protected]> > > Back in 1993 I had a spiffy computer that had 12 MB of RAM, bought to > run 386BSD 0.1 and then I ran NetBSD 0.8. I say that to calibrate our > sense of resource usgae. > > On the theory that if a value was appropriate in 1993, 5x that value is > totally fine in 2026. If a machine has less than 60 MB of RAM, then > lower might be warranted -- but on such a machine one would be building > custom kernels and ripping out everything that isn't neceesary anyway. > Therefore: > > I propose to change SEMMNI from 10 to 32. > I propose to change SEMMNS from 60 to 256. > > The concept would be, as it is now, that individual ports or kernel > configs could just set these to lower values, if that's appropriate.
Why not vary automatically with the amount of RAM at boot?
