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remove whole-process swapping
Long before Unix supported paging, it used process swapping to reclaim
memory. The code is there and in theory it runs when we get *extremely* low
on memory. In practice, it never runs since the definition of low-on-memory
is antiquated. (XXX: define what antiquated means)
You can check the number of swapout/swapin events with kstats:
$ kstat -p ::vm:swapin ::vm:swapout
@@ -489,11 +489,10 @@
ASSERT_STACK_ALIGNED();
type = rp->r_trapno;
CPU_STATS_ADDQ(CPU, sys, trap, 1);
- ASSERT(ct->t_schedflag & TS_DONT_SWAP);
if (type == T_PGFLT) {
errcode = rp->r_err;
if (errcode & PF_ERR_WRITE)