d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

uma: Show the count of free slabs in each per-domain keg's sysctl tree

Browse Source 
This is useful for measuring the number of pages that could be freed
from a NOFREE zone under memory pressure.

MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Mark Johnston 2021-09-17 12:13:47 -04:00
parent 7fabaac221
commit d6e77cda9b
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
sys/vm/uma_core.c
View File

@ -2690,7 +2690,10 @@ zone_alloc_sysctl(uma_zone_t zone, void *unused)
"Total pages currently allocated from VM");
SYSCTL_ADD_U32(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
"free_items", CTLFLAG_RD, &dom->ud_free_items, 0,
"items free in the slab layer");
"Items free in the slab layer");
SYSCTL_ADD_U32(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,
"free_slabs", CTLFLAG_RD, &dom->ud_free_slabs, 0,
"Unused slabs");
}
} else
SYSCTL_ADD_CONST_STRING(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,