Ping < 1ms but nPing to 1352 > 1100ms (Help!)

HCL Domino Domino Forum
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I am desperately trying to get my arms around sluggish performance on the local mail server. I will start with nPing and try to figure out more involved ways to be able to diagnose this problem that now has executives breathing down on us.

If I read the nPing (NotesConnect) documentation correctly, the utility takes the “server response” out of the equation. Am I misreading this?

My typical results are:

Port 1352 - Ping < 1ms but nPing > 1100ms

Port 80 - Ping < 1ms but nPing > 1100ms

Port 25 - Ping < 1ms and nPing < 100ms

I am starting to wade through the various links and docs that deal with performance. Any insight and guidance would be appreciated. Thanks.

John

2

Subject: Ping < 1ms but nPing to 1352 > 1100ms (Help!)

Your <1ms ping response just measures the round trip time for ICMP packets (i.e. the speed of your network connection to the server). The three nping results you give measure the speed of the server’s response to a connection request for these three protocols: moderate for SMTP mail, and poor for Web and Notes client traffic.

So why is your server responding so badly? Maybe most of its available memory is tied up doing something that should be handled more efficiently. Maybe there’s a memory leak (Do you get the same figures say 10 minutes after a restart?) Maybe your hardware’s just not up to the demands you’re making of it. Maybe your hardware needs optimising to give better performance for Notes.

To sort out which of these is the issue will require some more info. For a start:

  • Which processes are taking the most memory in Task Manager?

  • What are typical Total and Available Memory figures from the Performance tab in Task Manager?

  • Which processes are showing greatest processor utilization?

  • What’s the basic configuration of your machine (RAM, storage, processor(s), etc.)?

  • How many users are using this server, and for what (mail, IM, apps, etc.) If you’ve got apps, what do they do?

  • Are there any Domino add-in services running (i.e. stuff on the ServerTasks= line in Notes.ini beyond the usual entries)

  • Are there any other significant services running on the box? (e.g. Oh yeah, it’s the file and print server for our graphic designers)

That should provide plenty of stuff to start considering!

Cheers,

Rupert Clayton

Chicago