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| author | Mark Johnston <markj@FreeBSD.org> | 2021-09-17 16:13:47 +0000 |
|---|---|---|
| committer | Mark Johnston <markj@FreeBSD.org> | 2021-09-17 18:19:05 +0000 |
| commit | d6e77cda9be1509ea170142cca3ff0d3b9f12e35 (patch) | |
| tree | 1d45334934a1880c0dbfcedcbeff64dcbe16fae7 /sys/vm | |
| parent | 7fabaac2211e7ed1cec9650e46f4e03428411dcf (diff) | |
| download | src-d6e77cda9be1509ea170142cca3ff0d3b9f12e35.tar.gz src-d6e77cda9be1509ea170142cca3ff0d3b9f12e35.zip | |
uma: Show the count of free slabs in each per-domain keg's sysctl tree
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
Diffstat (limited to 'sys/vm')
| -rw-r--r-- | sys/vm/uma_core.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/vm/uma_core.c b/sys/vm/uma_core.c index cdf3d482679e..12cab490781b 100644 --- a/sys/vm/uma_core.c +++ b/sys/vm/uma_core.c @@ -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, |