| Commit message (Collapse) | Author | Age | Files | Lines |
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devices and dump stats for all devices in the system. User can still limit iostat -x by -n switch.
Spotted by: Igor Sysoev
Submitted by: kensmith
Approved by: re (kensmith)
MFC after: 2 weeks
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Style(9) wisdom from: bde
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Prodded by: bde
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PR: bin/112559
Submitted by: Dan Nelson
MFC after: 2 weeks
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- Pass the address of the variable we are reading to kvm_read() rather
than the index into the nlist array.
- Properly report errors from kvm_read() which returns -1 on error, not
0.
MFC after: 3 days
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No functional changes.
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o Implement Solaris-like -z flag: omit lines for devices with no activity.
o iostat.8: describe -x and -z flags, Xr devstat(3), touch .Dd.
PR: mostly bin/68840, with style changes; bin/73327
Submitted by: Dan Nelson, Peter Schuller
Obtained from: NetBSD (a part of man page)
MFC after: 1 month
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sections, so that users of one can learn about the others easily.
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and libdevstat, since the new way of doing things is to just list
maintainership in src/MAINTAINERS.
Also, remove duplicate entries in src/MAINTAINERS for those utilities. I
already had entries for them.
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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
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My apologies for missing these #includes, I must have confused the
dependencies with a wrong timestamp or something.
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PR: 46104
Pointed out by: Rich Morin <rdm@cfcl.com>
Approved by: re (rwatson)
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vmstat so that they never coalesce. Both iostat and vmstat need larger
fixes to prevent wide fields from unnecessarily messing up the alignment
of all subsequent fields.
PR: 41674
MFC-after: 3 days
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pollution in <kvm.h>.
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PR: docs/37757
Submitted by: Hiten Pandya <hiten@uk.FreeBSD.org>
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process gets a SIGCONT
Reviewed by: kris@freebs.org
MFC after: 2 weeks
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MFC after: 2 weeks
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originally written in January, 2000, but have been substantially updated.
- No longer use hz/stathz and the CPU times in computing the TTY stats,
but rather use etime, like the disk stats.
- Clean up malloc/realloc failure tests.
- Use a new integrated routine to fetch devstat information via sysctl or
KVM.
- Get rid of the X() macro for calculating CPU stats
- Use rint() on the CPU state display to avoid truncation errors. (this
requires libm)
- Clean up flag usage somewhat.
Reviewed by: bde
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crash dumps, and make it use sysctl for all data retrievals in the
"live" case (i.e. when not using iostat on a crash dump).
Remove setgid kmem for the iostat executable, it is not needed any
more after these changes.
Reviewed by: ken
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These are not perfectly in agreement with each other style-wise, but they
are orders of orders of magnitude more consistent style-wise than before.
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- MAN[1-9] -> MAN.
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Approved by: ken
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Remove unused variable.
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before.
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Remove -? flag that was not working but documented. Make it work instead
but hide it in man page and usage string as others tools do.
Spelling.
Abort on allocation failure (with errx()).
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- Sort xrefs.
- FreeBSD.ORG -> FreeBSD.org
- Be consistent with section names as outlined in mdoc(7).
- Other misc mdoc cleanup.
PR: doc/13144
Submitted by: Alexey M. Zelkin <phantom@cris.net>
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page documents '?' as a valid option, as does the usage message. None
of the other programs' man pages documented '?' as a valid option.
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o getopt returns -1 rather than EOF on errors
o getopt returns '?' for characters it doesn't know about, so
don't include them in the getopt options string.
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Suggested by: brian, markm
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generation was causing unaligned access faults on the Alpha.
I have incremented the devstat version number, since this is an interface
change. You'll need to recompile libdevstat, systat, iostat, vmstat and
rpc.rstatd along with your kernel.
Partially Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
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