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New Contributor
Posts: 3
Registered: ‎11-20-2012

Aruba IAP-135 High CPU Consumption

Hi Airheads,

 

We recently bought an IAP-135 to take a look at it.

It currently has the latest firmware version 6.1.3.4-3.1.0.0.

 

The problem I have is that the CPU usage goes up to 90% when i'm transferring data at speed about 100-110 Mbit/s

At this time i'm the only client on the IAP and have and established connection with a linkspeed of 300Mbit/s

 

If the CPU is used for 90% during 100Mbit transfer, what would the CPU usage be if the total transfer speed came closer to theoretical 900Mbit/s for this AP?

 

So, the question is, is it ok for CPU consumption to be that high ?

And of course I understand that 300mbps is only a linkspeed,theoretical maximum speed. But isn't 100 Mbit/s too low for a linkspeed of 300?

 

Thank you for your opinions.

Aruba Employee
Posts: 20
Registered: ‎01-23-2012

Re: Aruba IAP-135 High CPU Consumption

Hi,

 

this seems to be related to the following post:
http://community.arubanetworks.com/t5/Aruba-Instant/105-slow-after-firmware-upgrade-to-6-1-3-4-3-1-0-0-35320/m-p/47608/highlight/true#M795

 

On my deployment, CPU usage went to normal usage level after disabing MAS integration.

 

Best regards,

 

Paul Gallant. Eng.
CWNA, CWSP
New Contributor
Posts: 3
Registered: ‎11-20-2012

Re: Aruba IAP-135 High CPU Consumption

Thanks Paul,

But looks like this is not the case.

 

Although I was telling about 6.1.3.4-3.1.0.0_35320, actually I  had the same picture even with 6.1.3.1.

 

As you recommended, I tried disabling MAS integration, but not sure if it worked. Reboted the IAP and found MAS integration enabled again. So far I wasn't able to have it disabled after reboot.

 

Luckily, I noticed that a new firmware version had just become available - 6.1.3.4-3.1.0.1_35899. (The IAP is Dell-branded, so all firmare updates come later than for original aruba devices)

After upgrading to 6.1.3.4-3.1.0.1_35899, I was able to disable MAS integration (it stayed disabled even after IAP reboot).

But still no difference in CPU usage.

When i Hit 100-120 mbps, cpu usage hits 80-90%. When there is no transfer - it is used for 10% on the average

 

Could someone share their normal CPU usage under heavy load, say when IAP transfers total of more than 100mbps ?

 

Thanks

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