On 6 May 2011 00:33, Garrett Cooper <yanegomi_at_gmail.com> wrote: > I was watching top output on my dev box and I noticed that there > are more swapped out processes present on the system, shortly after > boot (which doesn't make sense given that I'm not low on resources on > the box). Also, the os when I run os.waitpid() in python claims that > the child doesn't exist, so I'm wondering if there's an issue with the > processes reported via ps, top, etc. > I'm noting this because it's a behavior change over my > 'stable'-ish workstation, running CURRENT/r220089/amd64, which is > spec'ed out the same as the dev box, minus some multimedia hardware. > Thanks, > -Garrett > > # uname -a > FreeBSD fallout.local 9.0-CURRENT FreeBSD 9.0-CURRENT #0 r221219M: Thu > May 5 12:09:37 PDT 2011 > root_at_fallout.local:/usr/obj/usr/src/sys/FALLOUT amd6 > # fstat -p 1832 > USER CMD PID FD MOUNT INUM MODE SZ|DV R/W > root sshd 1832 root / 2 drwxr-xr-x 1024 r > root sshd 1832 wd / 2 drwxr-xr-x 1024 r > root sshd 1832 text /usr 730118 -r-xr-xr-x 240944 r > root sshd 1832 0 /dev 6 crw-rw-rw- null r > root sshd 1832 1 /dev 6 crw-rw-rw- null rw > root sshd 1832 2 /dev 6 crw-rw-rw- null rw > root sshd 1832 3* internet stream tcp fffffe01e56cf000 > root sshd 1832 4* pseudo-terminal master pts/1 rw > root sshd 1832 5* local stream fffffe0008f79960 <-> > fffffe0008f79a50 > # fstat -p 149 > USER CMD PID FD MOUNT INUM MODE SZ|DV R/W > root adjkerntz 149 root / 2 drwxr-xr-x 1024 r > root adjkerntz 149 wd / 2 drwxr-xr-x 1024 r > root adjkerntz 149 text / 329805 -r-xr-xr-x 8792 r > root adjkerntz 149 0 /dev 6 crw-rw-rw- null rw > root adjkerntz 149 1 /dev 6 crw-rw-rw- null rw > root adjkerntz 149 2 /dev 6 crw-rw-rw- null rw > # fstat -p 1479 > USER CMD PID FD MOUNT INUM MODE SZ|DV R/W > root syslogd 1479 root / 2 drwxr-xr-x 1024 r > root syslogd 1479 wd / 2 drwxr-xr-x 1024 r > root syslogd 1479 text /usr 739002 -r-xr-xr-x 39008 r > root syslogd 1479 0 /dev 6 crw-rw-rw- null rw > root syslogd 1479 1 /dev 6 crw-rw-rw- null rw > root syslogd 1479 2 /dev 6 crw-rw-rw- null rw > root syslogd 1479 3 /var 353301 -rw------- 4 w > root syslogd 1479 4* local dgram fffffe0008cd31e0 > root syslogd 1479 5* local dgram fffffe0008cd30f0 > root syslogd 1479 6* internet6 dgram udp fffffe0008ced540 > root syslogd 1479 7* internet dgram udp fffffe0008ced3f0 > root syslogd 1479 8 /dev 29 crw------- klog r > root syslogd 1479 10 /var 1389613 -rw-r--r-- 25389 w > root syslogd 1479 11 /var 1389579 -rw------- 62 w > root syslogd 1479 12 /var 1389572 -rw------- 10164 w > root syslogd 1479 13 /var 1389601 -rw-r----- 2814 w > root syslogd 1479 14 /var 1389575 -rw-r--r-- 62 w > root syslogd 1479 15 /var 1389580 -rw------- 62 w > root syslogd 1479 16 /var 1389577 -rw------- 57212 w > root syslogd 1479 17 /var 1389606 -rw------- 38046 w > root syslogd 1479 18 /var 1389578 -rw-r----- 62 w > # fstat -p 1829 > USER CMD PID FD MOUNT INUM MODE SZ|DV R/W > gcooper sh 1829 root / 2 drwxr-xr-x 1024 r > gcooper sh 1829 wd /usr 1884160 drwxr-xr-x 1024 r > gcooper sh 1829 text / 212057 -r-xr-xr-x 131784 r > gcooper sh 1829 0 /dev 127 crw--w---- pts/0 rw > gcooper sh 1829 1 /dev 127 crw--w---- pts/0 rw > gcooper sh 1829 2 /dev 127 crw--w---- pts/0 rw > gcooper sh 1829 10 /dev 127 crw--w---- pts/0 rw > > # python -c 'import os; os.waitpid(1825, 0)' > Traceback (most recent call last): > File "<string>", line 1, in <module> > OSError: [Errno 10] No child processes But pid 1825 (sshd) is not a child process of the python process , isn't it? from waitpid(2): [ECHILD] The calling process has no existing unwaited-for child processes. Look at /sys/kern/kern_exit.c:kern_wait(). The function returns ECHILD if a specified process was not found among p->p_children children group. > # ps auxww | grep 1825 > root 1825 0.0 0.0 47952 0 ?? IWs - 0:00.00 > sshd: gcooper [priv] (sshd) > root 88213 0.0 0.0 16340 1356 3 S+ 1:25PM 0:00.00 grep 1825 > # top -b > last pid: 96740; load averages: 1.07, 0.98, 0.92 up 0+01:15:32 13:27:04 > 50 processes: 2 running, 48 sleeping > > Mem: 56M Active, 23M Inact, 795M Wired, 1848K Cache, 1237M Buf, 11G Free > Swap: 24G Total, 832K Used, 24G Free > > > PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU > COMMAND > 1828 gcooper 1 20 0 47952K 3372K select 6 0:02 0.00% sshd > 26295 root 1 20 0 9972K 888K kqread 2 0:01 0.00% tail > 95888 root 1 52 0 14472K 8092K wait 1 0:00 0.00% make > 1729 root 1 20 0 20368K 3000K select 2 0:00 0.00% sendmail > 59474 gcooper 1 20 0 47952K 3768K select 7 0:00 0.00% sshd > 57339 root 1 52 0 6280K 1168K wait 1 0:00 0.00% make > 75210 gcooper 1 20 0 47952K 3816K select 5 0:00 0.00% sshd > 82431 root 1 52 0 6280K 1148K wait 2 0:00 0.00% make > 94797 root 1 52 0 6280K 1164K wait 2 0:00 0.00% make > 59441 root 1 21 0 47952K 3772K sbwait 4 0:00 0.00% sshd > 1825 root 1 21 0 47952K 0K sbwait 1 0:00 0.00% <sshd> > 75167 root 1 21 0 47952K 3820K sbwait 1 0:00 0.00% sshd > 1832 root 1 20 0 47952K 0K sbwait 1 0:00 0.00% <sshd> > 96738 root 1 72 0 17184K 9756K CPU0 0 0:00 0.00% cc1 > 1479 root 1 20 0 12228K 1372K select 4 0:00 0.00% syslogd > 75237 root 1 20 0 17612K 2424K ttyin 4 0:00 0.00% bash > 1835 gcooper 1 20 0 47952K 3284K select 2 0:00 0.00% sshd > 57233 root 1 52 0 6280K 756K wait 2 0:00 0.00% make -- wbr, pluknetReceived on Fri May 06 2011 - 04:28:49 UTC
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