Use sysctl to fetch stats from the kernel instead of reading variables

2008-06-10T18:47:43Z

directly via libkvm. PR: kern/122875, bin/123014 Tested by: Danny Braniss danny cs.huji.ac.il MFC after: 1 week

Fix most cases where the address of an int is passed to a function expecting a

2005-02-14T17:42:58Z

socklen_t * argument.

Put libdevstat before libkvm, because the former depends on the latter.

2004-02-04T10:20:43Z

Add the variable's type to the declaration.

2003-06-02T02:34:36Z

Run a revision of the devstat interface:

2003-03-15T21:59:06Z

Kernel: Change statistics to use the *uptime() timescale (ie: relative to boottime) rather than the UTC aligned timescale. This makes the device statistics code oblivious to clock steps. Change timestamps to bintime format, they are cheaper. Remove the "busy_count", and replace it with two counter fields: "start_count" and "end_count", which are updated in the down and up paths respectively. This removes the locking constraint on devstat. Add a timestamp argument to devstat_start_transaction(), this will normally be a timestamp set by the *_bio() function in bp->bio_t0. Use this field to calculate duration of I/O operations. Add two timestamp arguments to devstat_end_transaction(), one is the current time, a NULL pointer means "take timestamp yourself", the other is the timestamp of when this transaction started (see above). Change calculation of busy_time to operate on "the salami principle": Only when we are idle, which we can determine by the start+end counts being identical, do we update the "busy_from" field in the down path. In the up path we accumulate the timeslice in busy_time and update busy_from. Change the byte_* and num_* fields into two arrays: bytes[] and operations[]. Userland: Change the misleading "busy_time" name to be called "snap_time" and make the time long double since that is what most users need anyway, fill it using clock_gettime(CLOCK_MONOTONIC) to put it on the same timescale as the kernel fields. Change devstat_compute_etime() to operate on struct bintime. Remove the version 2 legacy interface: the change to bintime makes compatibility far too expensive. Fix a bug in systat's "vm" page where boot relative busy times would be bogus. Bump __FreeBSD_version to 500107 Review & Collaboration by: ken

Update to current devstat API.

2003-03-15T21:04:50Z

Add #include

2003-02-16T15:21:26Z

Remove #include

2003-02-16T14:09:16Z

Rename local function havedisk() to haveadisk() to avoid conflict a

2002-10-02T18:29:50Z

with another function by the same name in a system header.

Include for nlist interfaces instead of depending on namespace

2002-08-18T17:57:08Z

pollution in .

src/libexec/rpc.rstatd, branch releng/8.4