network problem?

[huaxiang]

1. xp1000,os v5.1
2. network not stable, sometimes cannot ping it.most of time it is good.
3. using 'top' find the cpu usage is high:
69 processes: 13 running, 20 sleeping, 36 idle
CPU states: 65.7% user, 0.0% nice, 34.2% system, 0.0% idle
Memory: Real: 141M/490M act/tot Virtual: 4M/2048M use/tot Free: 116M

PID USERNAME PRI NICE SIZE RES STATE TIME CPU COMMAND
1746 root 51 0 19M 10M sleep 675.9H 38.00% dtsession
1773 root 50 0 6824K 876K run 600.5H 32.60% ttsession
168369 das 44 0 9360K 811K run 362:53 24.90% collector_bel
115603 das 44 0 150M 128M run 689:28 0.70% java
2613 das 44 0 72M 14M run 300:21 0.10% java
170715 das 44 0 4224K 1753K run 0:04 0.10% top
1482 root 44 0 2704K 262K sleep 192:09 0.00% svrMgt_mib
1486 root 44 0 3552K 221K sleep 53:27 0.00% os_mibs
1506 root 44 0 5904K 2580K run 41:10 0.00% insightd
2455 root 44 0 4096K 540K sleep 35:42 0.00% dtssd
151339 das 44 0 78M 66M sleep 35:08 0.00% java
2373 root 44 0 5208K 2039K run 19:48 0.00% dnaevld
2487 root 44 0 5520K 1712K run 17:20 0.00% cmi_srv
2401 root 44 0 3384K 368K sleep 14:48 0.00% dnascd
1797 root 44 0 12M 2883K sleep 10:07 0.00% dtfile
pls give some advice.
the process "collector_bel" is our application

[Ralf Puchner]

if you can not ping it seems a hardware network problem.

please check switch and machine for network errors (switch: logfile on switch, port settings etc, machine: port settings, netstat -i)

[huaxiang]

hi, thanks for ur advice.

1. pls note that the "dtsession" and "ttsession" process occupy 70% of cpu usage.
2. why this two occupys so much?
PID USERNAME PRI NICE SIZE RES STATE TIME CPU COMMAND
1746 root 51 0 19M 10M sleep 675.9H 38.00% dtsession
1773 root 50 0 6824K 876K run 600.5H 32.60% ttsession
168369 das 44 0 9360K 811K run 362:53 24.90% collector_bel

PID USERNAME PRI NICE SIZE RES STATE TIME CPU COMMAND
1746 root 51 0 19M 10M sleep 675.9H 38.00% dtsession
1773 root 50 0 6824K 876K run 600.5H 32.60% ttsession
168369 das 44 0 9360K 811K run 362:53 24.90% collector_bel

[Michael Schulte zur Sur]

Hi,

can you explain your network infrastructure, what switches, router and how many hops when you ping(lan,wan). netstat -I"nic" -s shows you detailed stats.

greetings,

Michael

[Ralf Puchner]

ping is a basic "service" of the networking layer and will also work if 100% the cpu is used.

The dtsession and ttsession are tooltalk/cde processes. CDE is network dependant, in case of a problem also this processes are affected.

Please repair your network infrastructure before analyzing things not really an issue here....