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SubjectLinux-2.2.0 bad VM behaviour "dd if=/dev/zero of=/dev/hdc bs=256k"
Hi hackers,

I guess there is something wrong with the 2.2.0 vm... when I try this:

dd if=/dev/zero of=/dev/hdc bs=256k

the system becomes very lazy and after a couple of seconds 'ps amx' shows that
nearly every process has been swapped out. After a couple of minutes
daemons just die or stop with D state. Not very good.

The system is 333MHz Celeron, 64Mt.

Thanks,

Petri


30:~$ ps amx
PID TTY MAJFLT MINFLT TRS DRS SIZE SWAP RSS SHRD LIB DT COMMAND
1 ? 418 96 0 4 60 56 4 0 0 1
2 ? 0 0 0 0 0 0 0 0 0 0 (kflushd)
3 ? 773 0 0 0 0 0 0 0 0 0 (kswapd)
65 ? 880 155 0 0 44 44 0 0 0 0 (update)
79 ? 590 137 0 0 84 84 0 0 0 0 (syslogd)
83 ? 264 133 0 0 312 312 0 0 0 0 (klogd)
116 ? 66 25 0 0 68 68 0 0 0 0
(rpc.portmap)
126 ? 159 97 0 0 68 68 0 0 0 0 (inetd)
133 ? 149 33 0 0 0 0 0 0 0 0 (rpciod)
143 ? 1 4 0 0 100 100 0 0 0 0
(rpc.kmountd)
147 ? 69 22 0 0 0 0 0 0 0 0 (nfsd)
148 ? 69 22 0 0 0 0 0 0 0 0 (nfsd)
149 ? 69 22 0 0 0 0 0 0 0 0 (nfsd)
150 ? 69 22 0 0 0 0 0 0 0 0 (nfsd)
153 ? 69 22 0 0 0 0 0 0 0 0 (lockd)
160 ? 20 22 0 0 116 116 0 0 0 0 (sshd)
161 ? 97 14 0 0 52 52 0 0 0 0 (cgetty)
162 ? 93 14 0 0 52 52 0 0 0 0 (cgetty)
163 ? 93 14 0 0 52 52 0 0 0 0 (cgetty)
164 ? 93 14 0 0 52 52 0 0 0 0 (cgetty)
165 ? 93 14 0 0 52 52 0 0 0 0 (cgetty)
166 ? 93 14 0 0 52 52 0 0 0 0 (cgetty)
167 ? 93 14 0 0 52 52 0 0 0 0 (cgetty)
168 ? 93 14 0 0 52 52 0 0 0 0 (cgetty)
176 ? 442 91 0 0 140 140 0 0 0 0
(in.telnetd)
177 ? 497 193 0 0 264 264 0 0 0 0 (bash)
183 ? 701 294 0 0 260 260 0 0 0 0 (bash)
240 ? 987 488 0 28 80 52 28 0 0 0 (dd)
229 ? 849 153 32 32 176 112 64 36 0 7
in.telnetd
256 ? 368 52 32 184 276 60 216 184 0 8 ps amx
230 ? 1932 662 164 232 532 136 396 288 0 27 -bash
93 ? 345 51 20 1044 1064 0 1064 1060 0 15 wdogd


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