Date: Wed, 2 Dec 2015 03:02:35 +0000 From: Hongjiang Zhang <honzhan@microsoft.com> To: Hooman Fazaeli <hoomanfazaeli@gmail.com>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: RE: mbuf statistics Message-ID: <7dcef1f0edc04fb9b1ab35ec66383538@SG2PR3002MB0106.064d.mgd.msft.net> In-Reply-To: <565DC558.5090108@gmail.com> References: <565DC558.5090108@gmail.com>
index | next in thread | previous in thread | raw e-mail
I can observe the same phenomena on FreeBSD 10.2: current+cache==total==USED+FREE. There must be some relationship between them. $ netstat -mb|grep "mbuf clusters" 0/766/766/126146 mbuf clusters in use (current/cache/total/max) $ vmstat -z|egrep "mbuf_cluster|ITEM"|column -t ITEM SIZE LIMIT USED FREE REQ FAIL SLEEP mbuf_cluster: 2048, 126146, 759, 7, 759, 0, 0 -----Original Message----- From: owner-freebsd-net@freebsd.org [mailto:owner-freebsd-net@freebsd.org] On Behalf Of Hooman Fazaeli Sent: 2015Äê12ÔÂ2ÈÕ 0:06 To: freebsd-net@freebsd.org Subject: mbuf statistics Hi, On an idle freebsd 9.3 system: > vmstat -z | egrep "mbuf_cluster|ITEM" | column -t ITEM SIZE LIMIT USED FREE REQ FAIL SLEEP mbuf_cluster: 2048, 10284, 1152, 56, 4237, 0, 0 > netstat -mb | grep "mbuf clusters in use" 512/696/1208/10284 mbuf clusters in use (current/cache/total/max) one can see that: current + cache == total == USED + FREE but the current/cache values as reported by netstat are very different form USED/FREE values reported by vmstat, so they should have different meaning. The question is: what is the exact meaning of USED/FREE and current/cache values? Is there any relationship between them? -- Best regards Hooman Fazaeli _______________________________________________ freebsd-net@freebsd.org mailing list https://na01.safelinks.protection.outlook.com/?url=https%3a%2f%2flists.freebsd.org%2fmailman%2flistinfo%2ffreebsd-net&data=01%7c01%7chonzhan%40064d.mgd.microsoft.com%7c23b4f4abbceb4f717fba08d2fa695134%7c72f988bf86f141af91ab2d7cd011db47%7c1&sdata=dprvahDUYdoMYi22nOHMes385ngc4gJ6SH8aHX8LHiA%3d To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"help
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?7dcef1f0edc04fb9b1ab35ec66383538>