Path: utzoo!utgpu!cunews!bnrgate!brtph3!brchh104!brchs1!bnr.ca!rice.edu!sun-spots-request From: ehrlich@cs.psu.edu (Dan Ehrlich) Newsgroups: comp.sys.sun Subject: What are 'attaches' in vmstat? Keywords: Miscellaneous Message-ID: <1962@brchh104.bnr.ca> Date: 18 Mar 91 17:28:00 GMT Sender: news@brchh104.bnr.ca Organization: Sun-Spots Lines: 29 Approved: Sun-Spots@rice.edu X-Original-Date: Tue, 5 Mar 1991 10:54:30 -0500 X-Sun-Spots-Digest: Volume 10, Issue 57, message 19 X-Note: Submissions: sun-spots@rice.edu, Admin: sun-spots-request@rice.edu I have a question about vmstat. What does the 'at' field represent? The man page says that 'at' is the number of 'attaches'. What are 'attaches'? Here is a sample vmstat output: guardian:50> vmstat 5 procs memory page disk faults cpu r b w avm fre re at pi po fr de sr i0 i1 i1 s0 in sy cs us sy id 8 1 0 0 5048 0 5 2 0 0 0 0 14 0 0 0 57 86 40 85 4 10 Here is an extract from vmstat(1): page Report information about page faults and paging activity. The information on each of the following activities is averaged each five seconds, and given in units per second. re page reclaims - but see the -S option for how this field is modified. at number of attaches - but see the -S option for how this field is modified. pi kilobytes per second paged in po kilobytes per second paged out fr kilobytes freed per second de anticipated short term memory shortfall in Kbytes sr pages scanned by clock algorithm, per-second Dan Ehrlich - Sr. Systems Programmer - Penn State Computer Science /Voice: +1 814 863 1142/FAX: +1 814 865 3176