Poor Performance with Asus Blue Cave AC2600

[Griffon783]

Hey,

I recently purchased the asus blue cave router and configured an OpenVPN on it. I typically get about 300 Mb down/up and was expecting a performance hit, but when the VPN is activated I'm only getting 15 Mb down/up.

I know this router is far from the best, but I did expect better VPN performance than this. I know OpenVPN can only use one core of the processor and I am seeing that one of the cores is maxed out during a test.

Is there anything I can do to improve performance, or is this router just limited by it's processor?

Thanks.

 

[Odkrys]

Bluecave has extremely slow cpu for encryption performance.

Bluecave
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
aes-128-cbc       8263.86k     8783.15k     9962.75k    10107.56k    10076.16k

RT-N66U 
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
aes-128 cbc      12327.56k    13300.38k    13847.73k    14002.52k    13961.90k

RT-AC56U or RT-AC68U
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
aes-128 cbc      44653.45k    48938.15k    50584.75k    51367.22k    51593.05k

RT-AC86U
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
aes-128-cbc     187611.30k   531473.32k   964847.62k  1239431.79k  1354129.33k

 

[OzarkEdge]

Hey,

I recently purchased the asus blue cave router and configured an OpenVPN on it. I typically get about 300 Mb down/up and was expecting a performance hit, but when the VPN is activated I'm only getting 15 Mb down/up.

I know this router is far from the best, but I did expect better VPN performance than this. I know OpenVPN can only use one core of the processor and I am seeing that one of the cores is maxed out during a test.

Is there anything I can do to improve performance, or is this router just limited by it's processor?

Thanks.

The RT-AC86U is said to perform well for VPN.

OE

 

[sfx2000]

is this router just limited by it's processor?

Yes...

 

[lostcowboy]

The rt-ac86u need the Merlin firmware flashed to it to enable hardware acceleration stock firmware does not have it to my understanding.

 

[RMerlin]

The rt-ac86u need the Merlin firmware flashed to it to enable hardware acceleration stock firmware does not have it to my understanding.

Stock firmware has hardware acceleration working.

 

[lostcowboy]

Cool

 

[sfx2000]

15 Mb down/up

That is a bit surprising, but perhaps not - even the GL-AR300M (QC-Atheros 9531 MIPS24K @ 650MHz) can do 18 Mbit/Sec over OpenVPN with OpenWRT - and the AR300M is quite a bit slower chip than the Lantiq/Intel SoC in the BlueCave...

AR-300M
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
aes-128 cbc       7896.65k     8725.36k     8957.60k     9049.38k     9060.68k