On Thu, May 5, 2011 at 11:28 PM, Sergey Kandaurov <pluknet_at_gmail.com> wrote: > 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. Yeah, good point. I'd have to use kill(, 0) in that case. >> # 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% makeReceived on Fri May 06 2011 - 04:31:36 UTC
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