245a1a4599
Use I/O timestamps to compute disk statistics for better precision.
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Disk statistics are collected in a fixed size array, that got corrupted
when a disk was detached. Adapt by skipping entries of detached disks
and detect reused disknames at the array end.
2017-07-04 21:19:33 +00:00
ba576b71a7
Enhance disk metrics by calculating a weighted sum that is incremented
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by the number of concurrent I/O requests. Also introduce a new disk_wait()
function to measure requests waiting in a bufq.
iostat -y now reports data about waiting and active requests.
So far only drivers using dksubr and dk, ccd, wd and xbd collect data about
waiting requests.
2017-03-05 23:07:12 +00:00
80a4e936b5
extend the "tout" column to 5 characters, it's really common on a modern
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machine to have eg, build output way more than 9999 chars/sec.
this doesn't affect the default disk list on an 80-char wide screen.
2015-10-25 02:47:17 +00:00
bdd303d7a7
support fnmatch(3) patterns for disknames. eg, "iostat wd*" works now.
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update the default disk number selection to note that it uses the current
terminal size to fit disks, not hard coded 4.
2015-07-09 13:26:52 +00:00
24bd8eb084
Remove KVM related options.
2014-06-11 17:01:04 +00:00
5f1d0b022e
static + __dead
2011-08-30 19:06:06 +00:00
e8824b0da4
A number greater than or equal to 1.0 is a positive number.
2011-02-14 02:43:37 +00:00
5a1e40df4f
Put space after comma and around binary operator.
2011-02-14 02:42:26 +00:00
a96fe1437c
Fix copy/paste error that resulted in a extra space after the KB/t column.
2011-01-09 03:35:23 +00:00
65d4cff419
NetBSD/vax libm now has fmax, use it again.
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Also, display average transfer size using dynamic precision too.
2011-01-09 02:40:19 +00:00
208ac54ed2
NetBSD/vax does not implement fmax(3), substitute with existing MAX() macro.
2011-01-08 02:36:52 +00:00
5637a88e80
Maintain 5-character width of MB/s column by dynamically adjusting the
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decimal precision.
This should work until disk transfer rates exceed 99999 MB/s.
2011-01-07 03:12:27 +00:00
107925002e
Fix -Wsign-compare issues
2009-04-15 10:05:41 +00:00
9c1945664c
Remove the \n and tabs from the __COPYRIGHT() strings.
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Tweak to use a consistent format.
2008-07-21 13:36:57 +00:00
5f1a365390
add parens.
2007-06-24 23:25:13 +00:00
53211cb1ae
Since the swapping of tk_nin and tk_nout was moved to its own
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function (tkswap()), actually call this function.
Fixes problems where the tin/tout fields showed total tty IO since
boot instead of just what has happened in the last second.
2006-07-26 03:33:02 +00:00
8613dc06f0
update a comment.
2006-04-21 13:46:37 +00:00
906131e6f3
Update to use the new kernel io statistics.
2006-04-14 13:14:57 +00:00
9f26f448bf
Need to read and swap cpustats separately from the dkstats.
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I wonder how many more programs use the code in vmstat/dkstats.c
2006-02-12 22:11:54 +00:00
16b7c5d1dd
print a header on each outputs if and only if the output has 2 or more lines.
2006-02-12 11:23:31 +00:00
895fec49e1
reset hdrcnt whenever printing a header.
2006-01-08 08:47:16 +00:00
132bb1fe89
Add tape statistics.
2005-08-07 12:32:38 +00:00
d6989eccf4
apply the patch from PR#30680: always print the header in extended
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(-x) mode, as it is much easier to see what is going on.
2005-07-07 22:31:45 +00:00
cfe7f80ff0
Add (unsigned char) cast to ctype functions
2004-10-29 20:51:11 +00:00
c4278791eb
for -x -I output, use just MB instead of MB/s in header
2004-02-25 03:39:14 +00:00
d20841bb64
Uppercase CPU, plural is CPUs.
2004-02-13 11:36:08 +00:00
326b2259b7
Move UCB-licensed code from 4-clause to 3-clause licence.
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Patches provided by Joel Baker in PR 22366, verified by myself.
2003-08-07 11:25:11 +00:00
134561f7df
- convert header() away from a signal function (it does all sorts of stdio
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and more) and use a little sig_header() helper.
- in selectdrives() make sure we don't overwrite some arrays. this makes
"iostat 1" work again on my really wide screens where defdrives (number that
can fit) was > ndrives (number of drives), rather than dump core trying to
print (char *)1...
2003-08-04 01:05:44 +00:00
c71be29ffd
Use the terminal width to choose the default number of drives listed.
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Suggested by matt green and (indirectly) enami tsugutomo.
2003-07-02 13:47:57 +00:00
329fb18071
Pinch code from vmstat to get the number of lines of the terminal, and
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show the header once per screen instead of fixed at every 22 lines.
2003-07-02 13:20:14 +00:00
2f35689ef7
Bump the width of the MB/s and t/s fields and show only 3 drives by
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default. The default display now fits in 80 columns, and looks much
better on modern systems.
2003-07-02 08:35:48 +00:00
96b62d8a69
no need to #include <sys/dkstat.h>
2003-06-11 17:26:31 +00:00
1f2ca5e686
Increase width now we mention flag arguments.
2003-05-01 15:29:24 +00:00
bee0be0e17
In the options list, show which ones require an argument.
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New sentence, new line.
2003-05-01 15:10:58 +00:00
c434363e30
Bump date for recent change.
2003-03-17 08:16:10 +00:00
70378aeac7
- Account the number of lines consumed so that -xw displays header
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frequently enough.
- As we are initializing dk_select to 0 (via dkinit), no need to check it.
- Re-order the code in display() to highlight the fact that -x is
exclusive with others.
- If user really specified some drives and none of them are found,
just bail out rather than falling back to default behaviour.
- Other misc. cosmetic changes while I'm here.
2003-03-01 07:40:58 +00:00
51a7567d63
Sync with the behaviour change.
2003-03-01 07:35:41 +00:00
d0ee51001e
PR/20435: KOIE Hidetaka: iostat -x ignores drive selection.
2003-03-01 05:38:11 +00:00
0ad4042cc2
... and fix typos which makes wrong display.
2002-11-02 06:35:30 +00:00
a65c9b21f2
Cosmetic changes.
2002-11-02 06:32:10 +00:00
c79652b287
Print a newline between lines in -x mode.
2002-11-01 14:02:21 +00:00
3cf4c73d05
iostat(8) and systat(8) support for separate read/write disk statistics.
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"iostat -x" now shows these (ala linux/solaris), but this is only splitting
the read/write bytes/transactions, not adding any new metrics. "systat
iostat" now has two new commands to switch between combined/separate mode
for both it's numbers & bar modes.
2002-11-01 12:47:55 +00:00
7f79942c2d
select() -> nanosleep()
2002-09-18 23:18:44 +00:00
17d72c8a6b
use NETBSDSRCDIR as appropriate
2002-09-18 03:54:26 +00:00
f80c7eebd7
Since the KERN_CP_TIME sysctl reports total clock ticks across all
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cpus and hz is measured in ticks per cpu, divide tick count by ncpu to
determine elapsed time since last sample.
Fixes I/O rate deflation observed on multiprocessors.
2002-06-30 00:10:33 +00:00
c9e9cab056
We don't need the code to discard setgid privileges if we aren't setgid!
2002-05-22 13:12:27 +00:00
1347ab1b90
Remove check for sparc64 which adds -msoft-quad-float as that is now the
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default for the compiler on sparc64.
2002-03-28 09:58:09 +00:00
f69ac131ba
Drop the setgid'ness now that ../../usr.bin/vmstat/dkstats.c uses
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sysctls now.
2002-01-28 02:16:56 +00:00
dd75462fd1
Uppercase cpu.
2001-07-08 18:19:16 +00:00
7da30c83ac
Change xref for vmstat(8) to vmstat(1).
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Whitespace, punctuation and spelling fixes while I'm here.
2001-05-06 23:48:31 +00:00
mlelstv