I recently upgraded my netbsd-9 amd64 w 16GiB RAM to netbsd-10. Which, btw,
feels much "snappier", anecdotally.
After running a few builds and whatnot, I chased down where all my RAM was
going. Manually sorted:
Memory resource pool statistics
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
buf2k 2048 399771 0 97706 164994 11676 153318 164983 0 inf 106
vcachepl 640 1412222 0 612635 183127 39581 143546 183127 0 inf 0
ffsino 280 1440870 0 641796 78452 14088 64364 78452 0 inf 0
ffsdino2 264 1445733 0 646660 73222 13218 60004 73222 0 inf 0
namecache 192 1257514 0 444866 39817 2 39815 39817 0 inf 0
buf16k 16896 177282 0 71409 35542 250 35292 35292 0 inf 1
bufpl 280 425741 0 12096 30334 490 29844 30334 0 inf 0
anonpl 40 4816174 0 3570206 24466 2 24464 24466 0 inf 0
rwlock 64 1649569 0 753596 18923 2298 16625 18923 0 inf 0
mutex 64 1337583 0 537463 17451 1218 16233 17451 0 inf 0
dirhashblk 2048 30827 0 2014 15238 732 14506 15238 0 inf 64
radixnode 192 393557 0 273821 10589 1303 9286 10589 0 inf 12
pvpage 4096 14790 0 7333 10066 2131 7935 8964 0 inf 478
kmem-01024 1088 39226 0 20445 9647 3150 6497 8117 0 inf 0
vmmpepl 192 213489 0 122047 6626 1562 5064 5625 0 inf 10
kmem-02048 2048 22881 0 12785 8394 3346 5048 6698 0 inf 0
mclpl 2048 33126 0 24568 5514 1211 4303 4390 0 261333 24
buf4k 4096 7619 0 4102 3884 366 3518 3838 0 inf 1
phpool-64 64 215806 0 22397 3283 64 3219 3283 0 inf 4
mbpl 520 76469 0 58519 3265 520 2745 2795 0 inf 2
...
Totals 177503409 0 169479744 816744 149009 667735
In use 4025485K, total allocated 4834772K; utilization 83.3%
That seems a little excessive, to my eye? Is this "normal"? Having >1/4 of RAM
apparently used mostly for file metadata, if I'm reading this correctly? I
don't recall the usage under -9, unfortunately, but I also never had a reason
to look.
I do set 'kern.maxfiles=40960', and also tweak 'vm.{anon,file}{min,max}', but,
afaict, nothing else relevant.
fwiw, this is a single raid0 over a couple of wd, all ffsv2, no zfs.
Actually, looking again... this is my only system with such a large
buf2k... what commonly allocates from that pool?
--
Paul Ripke
"Great minds discuss ideas, average minds discuss events, small minds
discuss people."
-- Disputed: Often attributed to Eleanor Roosevelt. 1948.
