Simpler Navigation for Servers and Operating Systems - Please Update Your Bookmarks
Completed: a much simpler Servers and Operating Systems section of the Community. We combined many of the older boards, so you won't have to click through so many levels to get at the information you need. Check the consolidated boards here as many sub-forums are now single boards.
If you have bookmarked forums or discussion boards in Servers and Operating Systems, we suggest you check and update them as needed.
Operating System - Tru64 Unix
cancel
Showing results for 
Search instead for 
Did you mean: 

Slow system response

Trent Ware
Occasional Contributor

Slow system response

Hi,

We have on site two DS25s and when connected to and a large file copy operation in progress, response at the command line is very slow. One has a SmartArray controller connected to it whilst the other only has internal disks.
Has anyone else experienced a similar problem?

Regards,
Trent
3 REPLIES
Ralf Puchner
Honored Contributor

Re: Slow system response

seems to be I/O related. If the os is installed out of the box tune it (have a look into the tuning guide).

Or open a call within the support center and request tuning assistence.
Help() { FirstReadManual(urgently); Go_to_it;; }
SlopeZ
Frequent Advisor

Re: Slow system response

Hi Trent,

if the problem is only on process of read/write on a disk, i think like Ralf, that could be a I/O problem.

You can check this with the comand:

#iostat 5 5 (interval - count)
and you can specify what device you want to ckeck too, in order to know if it's a problem with a specific device.

# iostat dsk12 dsk4 (example..)

have you checked the /var/adm/messages for an error or warning message?

REgards,
Santibon
Mark Poeschl_2
Honored Contributor

Re: Slow system response

Is your file copy completing in a reasonable amount of time? I wouldn't expect a single copy operation to stress a DS25 unless you had serious H/W issues. On the other hand, your question implies that the copy is going between servers and presumably over a network. What does

# netstat -I -i 2

look like while the copy is going on? You could be having interface speed/duplex/autonegotiation issues...