HP 3000 Manuals HP 3000 Manuals
Displaying Network Performance Information
You can display network performance information using a number of the
tools available through NETTOOL. LOOPINIT, RESOURCE MONITOR, and XPPERF
all provide performance monitoring features.
To Monitor Round Trip Response Time
The LOOPINIT tool allows you to send a series of packets to a specific
remote node and display the minimum, maximum, and average times required
for the packets to complete the round trip. Chapter 6 includes
step-by-step instructions for running LOOPINIT.
To Monitor Resource Usage
The RESOURCE MONITOR tool allows you to display the current usage of
specified resources. This is useful in situations where you suspect
over-utilization of a resource.
This tool provides two types of displays: the one-line (non-verbose)
display and the detailed (verbose) display. The one-line format lists
current use of resources, the maximum experienced (high-water mark), and
the maximum allowable usage for specified resources. See the example
below.
The verbose mode displays information about a particular item, providing
an interpretation of resource usage and pointing to possible
relationships with configurable parameters.
To Get a One-Line Display.
Follow the steps below to produce a resource display in non-verbose mode.
1. Run NETTOOL by entering the program name at the MPE prompt:
NETTOOL.NET.SYS
The root menu will appear.
2. Select the RESOURCE MONITOR tool from the main menu by entering
the RESOURCE command. A new menu will appear.
3. Enter DISPLAY to display resource usage. The tool will produce a
table similar to the following:
THU, MAR 12, 1992, 9:23:39 AM
Item Subsystem Name G/N Description Used High Max
1 NS XPORT TCP_CNTL (G) Control Buf Pool 0 0 120 :)
2 NS XPORT CP_POOL_ (G) Control Buf Pool 0 7 256 :)
3 NS XPORT 1088 (G) Control Buf Pool 5 15 240 :)
4 NS XPORT ROUTER (N) Control Buf Pool 0 7 128 :)
5 NS XPORT ROUTER (N) Control Buf Pool 0 0 30 :)
6 NS XPORT ROUTER (N) Control Buf Pool 0 0 20 :)
7 NS XPORT GPROT (G) Control Buf Pool 525 N/A 523 :(
8 NS XPORT TCP_SIP (G) Control Buf Pool 616 N/A 616 :)
9 NS XPORT UDP (G) Control Buf Pool 50 N/A 512 :)
10 NS XPORT TCP_PM (G) Control Buf Pool 33 N/A 2048 :)
11 NS XPORT ROUTER (G) Control Buf Pool 680 N/A 680 :)
12 NS XPORT IP_NI (G) Control Buf Pool 50 N/A 2048 :)
13 NS XPORT IP_NI (G) Control Buf Pool 50 N/A 512 :)
14 NS XPORT (G) Control Buf Pool 1 N/A 1024 :)
15 NS XPORT (G) Control Buf Pool 9 N/A 360 :)
16 NS XPORT (G) Control Buf Pool 1 N/A 611 :)
[4]RESOURCE>>
The column after the maximum allowable usage is an indication of actual
usage that may point to over-utilization of a resource. The ":"
indicates normal usage, and the ":(" indicates possible overutilization
of a resource. In the example above, item 7 shows an indication of
overutilization. You could use the verbose mode to obtain a detailed
display of that item's resource usage. Follow the steps below.
To Get a Detailed Display.
1. While still in the RESOURCE menu, enter detail to toggle the
setting of this switch to the detailed mode.
2. Enter ITEM. This will allow you to select the item from the
one-line list that you want to display.
3. Enter the item number. For example, you would enter the number 7
to display item #7. RESOURCE MONITOR will produce the detailed
display.
To Measure Network Performance
You can measure the performance of various aspects of the network, such
as the TCP/IP protocol stack, the UDP/IP protocol stack, or X.25 level 3
direct access, using the XPPERF tool. This tool runs by itself or as one
of the NETTOOL tools. See chapter 6 for instructions on running this
tool using the NETTOOL interface.