topic Re: Throughput of HBA cards? in Operating System - HP-UX

Throughput of HBA cards?

Joeriz Agtay — Mon, 03 Sep 2001 10:37:45 GMT

How can I measure the throughput of the HBA cards attached to my host?

Re: Throughput of HBA cards?

Victor BERRIDGE — Mon, 03 Sep 2001 13:59:42 GMT

Hi,
All I can think of for now (Im very busy and stressed, sorry...) is use glance..., or sar -d, or tranfer loads of data and use your watch or time cp ...

Regards

Victor

Re: Throughput of HBA cards?

linuxfan — Mon, 03 Sep 2001 14:25:30 GMT

Hi Joeriz,

You can use sar -b and sar -d to measure some of the metrics.

You can also try http://www.iozone.org which helps in analyzing I/O performance

HP has a unsupported tool called "diskbench" which can be used also
http://devresource.hp.com/devresource/Tools/Diskbench/Diskbench.html

-HTH
Ramesh

Re: Throughput of HBA cards?

Sridhar Bhaskarla — Mon, 03 Sep 2001 17:13:11 GMT

It's quite difficult to measure the throughput of a HBA card using the system commands as it is really dependent on how the command is issued. It is also dependent on how the external disk array is also configured.

I do the following to get a feel of throughput on my system.

Create an seperate LUN on the disk subsystem.
Create a volume group, file system and mount it. To measure the throughput for writes

#date >> log;prealloc /file_system/testfile 500000000;date >> log

Now measure the difference in the times and devide 500MB with it. For reads.,

#date >> log;cat /file_system/testfile > /dev/null ;date >> log

repeat the above said process.

The above is only for sequential.

These througputs vary depending on random reads/writes.

Also, striping on the disk subsystem will also change the throughput.

-Sri

Re: Throughput of HBA cards?

Vito Sarducci — Tue, 04 Sep 2001 12:23:53 GMT

If you have glance-ux or scope-ux measureware, you can get some really good network traffic figures from extracting from your scope-ux datalog.

if you have /var/opt/perf/
cd to that directory and run the following.

extract -xp -G -r /var/opt/perf/rept

this will give you ample data that you can download into excel and report from there your netstat totals.

HTH,

Vito

Re: Throughput of HBA cards?

Stefan Farrelly — Tue, 04 Sep 2001 12:39:40 GMT

HBA card ? more info please, what type/model of card is it and whats the host type ?

For any sort of connection to disk/tape devices dd is the command to test out performance.

For any sort of lan cards, ftp is the command to test out performance.

I can provide more info from the HP (internal use) manual on card performance if you can give more details on your host and cards in question.