[Bug 201685] top(1) with -m io produces garbage output for first update
bugzilla-noreply at freebsd.org
bugzilla-noreply at freebsd.org
Sun Jul 19 03:38:03 UTC 2015
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=201685
Bug ID: 201685
Summary: top(1) with -m io produces garbage output for first
update
Product: Base System
Version: 10.1-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: bin
Assignee: freebsd-bugs at FreeBSD.org
Reporter: cstdenis at ctgameinfo.com
When top is run -m io, the io stats in the first update are garbage data.
Here is output of top configured with 2 updates to show the problem. It is most
noticeable when used in batch mode, but also affects interactive mode.
The unmapped user IDs are normal here, it's caused by this being a jail server.
======================================================
root at Rin:/usr/local/etc/ezjail # freebsd-version
10.1-RELEASE-p14
root at Rin:/usr/local/etc/ezjail # top -v
top: version 3.5beta12
root at Rin:/usr/local/etc/ezjail # /usr/bin/top -mio -ototal -n -d 2
last pid: 193; load averages: 1.97, 2.27, 2.11 up 171+18:03:41
20:32:03
386 processes: 2 running, 384 sleeping
Mem: 779M Active, 3746M Inact, 3058M Wired, 11M Cache, 310M Free
ARC: 1583M Total, 48M MFU, 1126M MRU, 6861K Anon, 32M Header, 371M Other
Swap: 2048M Total, 202M Used, 1846M Free, 9% Inuse
PID USERNAME VCSW IVCSW READ WRITE FAULT TOTAL PERCENT COMMAND
1524 root 112440252 2645423 87941 119361424 0 119449365 3.15%
syslogd
1686 88 247804194 1369925 5510586 94629832 5372 100145790 2.64%
mysqld
1372 106 18593140 211500 339101 11605238 342 11944681 0.31%
clamav-milter
1949 root 7797680 472957 57488 11850655 0 11908143 0.31% syslogd
1377 106 404512 159938 1307130 7620728 25 8927883 0.24% freshclam
1369 106 2078158 997412 246356 6206470 18863 6471689 0.17% clamd
1353 112 15867731 34136 114640 5581016 74 5695730 0.15% dccifd
31926 125 2631184 251393 108606 1665388 0 1773994 0.05% tlsmgr
1268 root 2050530 5384 19637 1061213 2 1080852 0.03% syslogd
795 root 1762819 9738 21263 823570 0 844833 0.02% syslogd
20952 125 877982 17509 218959 0 13 218972 0.01% gam_server
31922 125 1303632 200001 161101 0 0 161101 0.00% qmgr
22107 70 93677 874 104230 34571 0 138801 0.00% postgres
2388 root 1488787 4106 9781 81676 2 91459 0.00% syslogd
1088 root 661820 3474 9723 80783 2 90508 0.00% syslogd
95245 root 34598 3184 1 32019 0 32020 0.00% cronolog
2502 root 335281 3487 11902 1 3 11906 0.00% cron
946 root 15139723 210467 7126 3700 32 10858 0.00% ntpd
last pid: 194; load averages: 1.97, 2.27, 2.11 up 171+18:03:44
20:32:06
369 processes: 1 running, 368 sleeping
CPU: 18.2% user, 0.0% nice, 3.4% system, 0.0% interrupt, 78.3% idle
Mem: 757M Active, 3747M Inact, 3054M Wired, 11M Cache, 335M Free
ARC: 1583M Total, 47M MFU, 1125M MRU, 8412K Anon, 32M Header, 371M Other
Swap: 2048M Total, 202M Used, 1846M Free, 9% Inuse
PID USERNAME VCSW IVCSW READ WRITE FAULT TOTAL PERCENT COMMAND
2138 88 30105 72 43 1062 0 1105 80.77% mysqld
99895 www 7664 30 63 0 0 63 4.61% httpd
134 www 3399 15 38 0 0 38 2.78% httpd
173 www 4081 17 31 0 0 31 2.27% httpd
143 www 4100 12 30 0 0 30 2.19% httpd
95245 root 31 0 0 28 0 28 2.05% cronolog
99884 www 1158 16 17 0 0 17 1.24% httpd
99822 www 2031 6 15 0 0 15 1.10% httpd
99897 www 2017 19 15 0 0 15 1.10% httpd
99810 www 2065 10 15 0 0 15 1.10% httpd
99812 www 1167 4 9 0 0 9 0.66% httpd
193 root 3 0 2 0 0 2 0.15% top
175 125 0 0 0 0 0 0 0.00% imapd
172 www 0 0 0 0 0 0 0.00% httpd
168 www 0 0 0 0 0 0 0.00% httpd
167 www 42 2 0 0 0 0 0.00% httpd
166 www 0 0 0 0 0 0 0.00% httpd
164 root 0 0 0 0 0 0 0.00% virtual
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