Hi there,
I'm running "frozen", previously with kernel ver 2.3.99pre-7 and now
2.4test-1.
Since I installed a NIS master server a few days ago my system often comes
to a crawl by excessive memory use of the NIS server (ypserv.)
I can (sort of) reproduce it by issuing "ypwhich -m" from the box itself or
another machine in my LAN which is just a NIS client. Suddenly there are
several copies of ypserv in the process list which consume ridiculous
amounts of memory and cause the machine to start swapping excessively,
bringing it to a crawl.
Here are two "top" snapshots I was able to create:
============= 8x =================
PID USER PRI NI SIZE RSS SHARE STAT LIB %CPU %MEM TIME COMMAND
376 root 17 0 9272 4996 132 D 0 9.1 12.9 0:01 ypserv
377 root 20 0 9280 4936 136 R 0 8.9 12.8 0:01 ypserv
373 root 13 0 1372 1372 700 R 0 8.8 3.5 0:13 top
375 root 14 0 9260 4224 132 D 0 8.1 10.9 0:01 ypserv
380 root 7 0 9324 3256 1072 R 0 7.2 8.4 0:01 ypserv
379 root 6 0 9296 5420 128 R 0 6.7 14.0 0:01 ypserv
378 root 5 0 9292 5604 156 R 0 6.6 14.5 0:01 ypserv
381 root 6 0 548 548 472 D 0 6.5 1.4 0:00 shutdown
2 root 8 0 0 0 0 SW 0 3.9 0.0 0:02 kswapd
160 root 1 0 232 160 104 S 0 0.7 0.4 0:00 ypbind
286 root 0 0 588 572 276 S 0 0.7 1.4 0:00 bash
355 root 0 0 380 120 76 S 0 0.3 0.3 0:01 sshd
4 root 0 0 0 0 0 SW 0 0.1 0.0 0:00 kupdate
147 root 1 0 9476 3308 3192 S 0 0.1 8.6 0:00 ypserv
1 root 0 0 100 52 40 S 0 0.0 0.1 0:03 init
3 root 0 0 0 0 0 SW 0 0.0 0.0 0:00 kflushd
============= 8x =================
1:30pm up 9:24, 3 users, load average: 2.57, 1.31, 0.91
50 processes: 45 sleeping, 5 running, 0 zombie, 0 stopped
CPU states: 2.9% user, 43.9% system, 0.0% nice, 53.0% idle
Mem: 38456K av, 29624K used, 8832K free, 0K shrd, 148K buff
Swap: 131064K av, 14108K used, 116956K free 1880K cached
PID USER PRI NI SIZE RSS SHARE STAT LIB %CPU %MEM TIME COMMAND
7706 root 14 0 8856 3072 152 D 0 4.8 7.9 0:00 ypserv
7711 root 13 0 8780 2596 40 R 0 4.4 6.7 0:00 ypserv
7708 root 11 0 8772 2608 44 D 0 4.3 6.7 0:00 ypserv
7710 root 12 0 8776 3668 48 R 0 4.3 9.5 0:00 ypserv
7709 root 11 0 8772 3588 48 R 0 4.2 9.3 0:00 ypserv
7707 root 16 0 8760 2944 36 R 0 4.1 7.6 0:00 ypserv
7704 root 12 0 1356 1356 700 R 0 2.4 3.5 0:05 top
7712 root 18 0 8856 1024 168 D 0 2.4 2.6 0:00 ypserv
150 root 8 0 8896 1244 280 S 0 1.6 3.2 0:22 ypserv
2 root 2 0 0 0 0 SW 0 0.8 0.0 2:59 kswapd
83 daemon 1 0 252 232 200 S 0 0.5 0.6 0:10 portmap
7653 root 1 0 392 160 100 S 0 0.2 0.4 0:02 sshd
1 root 0 0 100 52 40 S 0 0.0 0.1 0:07 init
3 root 0 0 0 0 0 SW 0 0.0 0.0 0:00 kflushd
4 root 0 0 0 0 0 SW 0 0.0 0.0 0:02 kupdate
135 root 0 0 228 168 136 S 0 0.0 0.4 0:06 syslogd
137 root 0 0 660 168 140 S 0 0.0 0.4 0:01 klogd
============= 8x =================
I'm pretty sure my config is ok (I've set up NIS servers before, both under
Linux and under Solaris.)
Any idea what's going on and how I can debug the scenario?
Thanks,
Ralf
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