I'm having terrible performance problems right now (trying to FTP a large
file from a solaris server, and only getting 8Mbit on 10/100 LAN)
This is my only clue so far:
[root ~]# top -Icb
last pid: 5510; load avg: 7.23, 7.71, 5.30; up 0+11:25:06
08:32:03
48 processes: 45 sleeping, 1 running, 1 zombie, 1 on cpu
CPU states: 0.0% idle, 1.6% user, 98.4% kernel, 0.0% iowait, 0.0% swap
Kernel: 108 ctxsw, 4 trap, 1455 intr, 272 syscall, 4 flt
Memory: 1024M phys mem, 49M free mem, 512M total swap, 510M free swap
PID USERNAME LWP PRI NICE SIZE RES STATE TIME CPU COMMAND
1907 root 1 33 0 3392K 2248K run 441:19 78.50%
/usr/sbin/in.ftpd -a
852 noaccess 17 59 0 172M 96M sleep 14:23 9.32%
/usr/java/bin/java -server -Xmx128m -XX:+UseParallelGC
-XX:ParallelGCThreads=4
5510 root 1 33 0 2816K 1512K cpu 0:01 8.72% top -Icb
3221 root 1 59 0 164M 23M sleep 3:10 0.64%
/usr/X11/bin/Xorg :0 -depth 24 -nolisten tcp -nobanner -auth
/var/dt/A:0-NvayBb
670 root 1 59 0 3356K 1320K sleep 44:29 0.53%
/usr/lib/vmware-tools/sbin/amd64/vmware-guestd-binary --background
/var/run/vmw
3259 root 1 59 0 19M 13M sleep 2:13 0.42% dtgreet
-display :0
7 root 15 59 0 13M 8584K sleep 1:04 0.21%
/lib/svc/bin/svc.startd
544 root 1 59 0 7452K 1712K sleep 0:09 0.10%
/usr/lib/sendmail -bd -q15m -C /etc/mail/local.cf
329 root 1 59 0 1420K 656K sleep 0:01 0.03% /usr/lib/utmpd
314 root 4 59 0 7972K 2792K sleep 0:15 0.02%
/usr/lib/inet/inetd start
633 root 1 59 0 2652K 564K sleep 0:10 0.02%
/usr/sbin/vmware-memctld --background /var/run/vmware-memctld.pid
Notice: in.ftpd is consuming nearly all the CPU, and the system is spending
98% in kernel time. No iowait.
This is a simple IO request. I don't think the system should be processor
bound. I am curious why the system is spending all its time waiting for the
kernel in the processor. I have no skills on dtrace. Could anybody offer
me any advice on how to figure out what the system is doing . why it's
taking so long . etc?
The system has been in this state for the last 10 hours, and the progress
meter predicts another 10 hours, although my manual calculator says another
5 hours.
Thank you for any assistance.
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