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UTM home on HP Microserver N40L = massive YouTube buffering.

I'm using the UTM in pass-through mode on my home server with a Virgin Media 200MBps connection.

I noticed that when the IPS was enabled (even with all the rules deselected) that download speed dropped from 20MB/s to 10MB/s, presumably because the CPU could not handle it - confirmed by SNORT topping out the CPU in top.

I have recently tested videos, mainly via YouTube and this defaults to low quality. If I increase it to 720P or above I get constant buffering.

I have disabled the IPS fully and also disabled Web filtering and country restrictions but I cannot get smooth videos playback.

I have checked the CPU usage via Top, and it is low. I have 4GB or RAM installed and only about 1.5Gb is in use.

Any ideas where to check for the cause of this?

thanks

Ian

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0 Dlabun over 8 years ago

It could be any number of things so you need to share a little more info about your setup... First off, what version of UTM are you running? Secondly, what's your network setup like?
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0 ianwhite over 8 years ago in reply to Dlabun

The N40L has a HP NC360T dual port NIC installed. One port (WAN) goes to the Virgin media cable router the other (LAN) to a TPLINK unmanaged switch. The PC is connected to the LAN switch - all connections are gigabit.

The UTM is installed directly to the hardware using a SATA drive and is firmware version 9.401-11

If I stream a video to my phone via Wi-Fi (no UTM involved) If get no issues at 720p
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0 PRad over 8 years ago in reply to ianwhite

Maybe the AMD Turion II Neo N40L, 2x 1.50GHz is to slow or is not working correktly with the 9.401-11.

regards peter
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0 ianwhite over 8 years ago in reply to PRad

I did wonder that, but the CPU is not heavily loaded when watching the videos, and ticks over at about 15-20%.

It only struggles if I enable the IDP, when Snort maxes out the CPU during downloads.
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0 Dlabun over 8 years ago in reply to ianwhite

Did you set your Virgin router to bridge mode? Not having the router in bridge mode could be part of the issue.
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0 ianwhite over 8 years ago in reply to Dlabun

I didn't, as I wasn't aware of this, only Modem mode.

Can you supply more details on this requirement, and how it works please?

I still need to use the WIFI on the Virgin superhub, would bridge mode break this?
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0 Dlabun over 8 years ago in reply to ianwhite

Placing it into bridge mode would disable wifi... Right now you're most likely seeing speed issues as both devices are "touching" the data instead of the UTM handling all of your networking tasks. Really you only want your ISP required hardware to act as a bridge from their network into your UTM and not perform any processing of the data.
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0 ianwhite over 8 years ago in reply to Dlabun

Thanks, I guess that is the same as 'Modem mode' which is the only option I could see in the settings. I can't do that as I don't have another WIFI device to connect to my switch.

However, the UTM firmware was updated last nights and it seems better - I will test more fully tonight.
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