Is my hAP ac broken?

Skibbi · November 6, 2024, 10:49am

I have an old hAP ac that I use for ~7 years. My setup is basic:

ISP (300/40Mbit/s) --- DHCP -> | hAP ac | ----> LAN

I never payed too much attention to my down/up speed as I’m not a heavy downloader and in 99% of the time internet just works. But recently I started investigating why I cannot download big files faster than 10-15MB/s. To rule our my config, which might be wrong due to VLANs I reverted hAP ac to factory config and connected it directly to my computer for tests. So the setup is:

ISP -> eth1 - hAP ac -> 1Gbit/s LAN - Computer

Unfortunately I’m still getting 10-15MB/s down for big files. Also I’m using iperf3 with https://proof.ovh.net/ and my speeds rarely exceed 200Mbit/s. The CPU during download have spikes to 20% rarely 30%. Temperature is around 50*C. I tried also to use sfp port instead of eth1 but the speeds are the same. I observed that downloading small files is not a problem and I can reach 25-27MB/s on them. Also downloading games from steam saturates my download without issues. The problem is only with iperf/big files.

I also have CRS310-8G+2S+IN so I configured it as a router with NAT enabled and also fasttrack and I’m able to hit 300Mbit/s on OVH iperf and files download with ~35MB/s

Am I missing something or my hAP ac is just starting to have hardware issues?

anav · November 6, 2024, 11:20am

Could be your config, but since you didnt post it, who can say.

Skibbi · November 6, 2024, 12:16pm

The config is factory one.

erlinden · November 6, 2024, 12:33pm

From the test results (https://mikrotik.com/product/RB962UiGS-5HacT2HnT#fndtn-testresults) you should be able to reach a bit over 300 Mbps.
What RouterOS version and firmware version are you running?

Skibbi · November 6, 2024, 12:48pm

ROS 7.16.1 on both.

erlinden · November 6, 2024, 12:58pm

How do you exactly test? Have you tried with multiple files? What protocol is used? Does the log give any hints?

Skibbi · November 6, 2024, 2:30pm

For file download: https://proof.ovh.net/files/10Gb.dat
Also iperf3 -c proof.ovh.net -p 5206 -R (port is random, sometimes it rejects the 5206)
What do you mean test multiple files? Also what logs? In hAP logs I don’t see anything suspicious.

erlinden · November 6, 2024, 2:43pm

What if you start multiple downloads, is the combined speed higher?
iperf3 -c proof.ovh.net -p 5206 -R -P 8 (gets you 8 streams), does that make a difference?

As the hAP ac is single core, that is not the limiting factor.
What is the hAP ac connected to?

Skibbi · November 6, 2024, 3:55pm

With multiple connections (4) it seems to behave better:

❯ iperf3 -c proof.ovh.net -p 5208 -R -P 4
Connecting to host proof.ovh.net, port 5208
Reverse mode, remote host proof.ovh.net is sending
[  5] local 192.168.88.10 port 37768 connected to 141.95.207.211 port 5208
[  7] local 192.168.88.10 port 37782 connected to 141.95.207.211 port 5208
[  9] local 192.168.88.10 port 37794 connected to 141.95.207.211 port 5208
[ 11] local 192.168.88.10 port 37800 connected to 141.95.207.211 port 5208
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  3.25 MBytes  27.2 Mbits/sec
[  7]   0.00-1.00   sec  7.38 MBytes  61.8 Mbits/sec
[  9]   0.00-1.00   sec  11.6 MBytes  97.4 Mbits/sec
[ 11]   0.00-1.00   sec  9.00 MBytes  75.4 Mbits/sec
[SUM]   0.00-1.00   sec  31.2 MBytes   262 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   1.00-2.00   sec  5.62 MBytes  47.2 Mbits/sec
[  7]   1.00-2.00   sec  8.00 MBytes  67.1 Mbits/sec
[  9]   1.00-2.00   sec  14.2 MBytes   120 Mbits/sec
[ 11]   1.00-2.00   sec  9.50 MBytes  79.7 Mbits/sec
[SUM]   1.00-2.00   sec  37.4 MBytes   314 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   2.00-3.00   sec  7.38 MBytes  61.9 Mbits/sec
[  7]   2.00-3.00   sec  7.88 MBytes  66.1 Mbits/sec
[  9]   2.00-3.00   sec  13.9 MBytes   116 Mbits/sec
[ 11]   2.00-3.00   sec  8.88 MBytes  74.5 Mbits/sec
[SUM]   2.00-3.00   sec  38.0 MBytes   319 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   3.00-4.00   sec  9.25 MBytes  77.6 Mbits/sec
[  7]   3.00-4.00   sec  7.25 MBytes  60.8 Mbits/sec
[  9]   3.00-4.00   sec  13.1 MBytes   110 Mbits/sec
[ 11]   3.00-4.00   sec  7.50 MBytes  62.9 Mbits/sec
[SUM]   3.00-4.00   sec  37.1 MBytes   311 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   4.00-5.00   sec  10.9 MBytes  91.2 Mbits/sec
[  7]   4.00-5.00   sec  7.00 MBytes  58.7 Mbits/sec
[  9]   4.00-5.00   sec  11.9 MBytes  99.6 Mbits/sec
[ 11]   4.00-5.00   sec  8.25 MBytes  69.2 Mbits/sec
[SUM]   4.00-5.00   sec  38.0 MBytes   319 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   5.00-6.00   sec  9.62 MBytes  80.7 Mbits/sec
[  7]   5.00-6.00   sec  6.38 MBytes  53.5 Mbits/sec
[  9]   5.00-6.00   sec  13.1 MBytes   110 Mbits/sec
[ 11]   5.00-6.00   sec  7.12 MBytes  59.8 Mbits/sec
[SUM]   5.00-6.00   sec  36.2 MBytes   304 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   6.00-7.00   sec  9.62 MBytes  80.7 Mbits/sec
[  7]   6.00-7.00   sec  6.25 MBytes  52.4 Mbits/sec
[  9]   6.00-7.00   sec  14.2 MBytes   120 Mbits/sec
[ 11]   6.00-7.00   sec  7.12 MBytes  59.8 Mbits/sec
[SUM]   6.00-7.00   sec  37.2 MBytes   312 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   7.00-8.00   sec  10.0 MBytes  83.9 Mbits/sec
[  7]   7.00-8.00   sec  6.38 MBytes  53.5 Mbits/sec
[  9]   7.00-8.00   sec  13.9 MBytes   116 Mbits/sec
[ 11]   7.00-8.00   sec  7.12 MBytes  59.8 Mbits/sec
[SUM]   7.00-8.00   sec  37.4 MBytes   314 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   8.00-9.00   sec  10.0 MBytes  83.9 Mbits/sec
[  7]   8.00-9.00   sec  6.50 MBytes  54.5 Mbits/sec
[  9]   8.00-9.00   sec  13.9 MBytes   116 Mbits/sec
[ 11]   8.00-9.00   sec  7.38 MBytes  61.9 Mbits/sec
[SUM]   8.00-9.00   sec  37.8 MBytes   317 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   9.00-10.00  sec  10.1 MBytes  84.9 Mbits/sec
[  7]   9.00-10.00  sec  6.50 MBytes  54.5 Mbits/sec
[  9]   9.00-10.00  sec  13.5 MBytes   113 Mbits/sec
[ 11]   9.00-10.00  sec  7.12 MBytes  59.8 Mbits/sec
[SUM]   9.00-10.00  sec  37.2 MBytes   312 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.04  sec  89.3 MBytes  74.6 Mbits/sec  518             sender
[  5]   0.00-10.00  sec  85.8 MBytes  71.9 Mbits/sec                  receiver
[  7]   0.00-10.04  sec  73.0 MBytes  61.0 Mbits/sec  761             sender
[  7]   0.00-10.00  sec  69.5 MBytes  58.3 Mbits/sec                  receiver
[  9]   0.00-10.04  sec   136 MBytes   114 Mbits/sec  1110             sender
[  9]   0.00-10.00  sec   133 MBytes   112 Mbits/sec                  receiver
[ 11]   0.00-10.04  sec  82.2 MBytes  68.6 Mbits/sec  680             sender
[ 11]   0.00-10.00  sec  79.0 MBytes  66.3 Mbits/sec                  receiver
[SUM]   0.00-10.04  sec   380 MBytes   318 Mbits/sec  3069             sender
[SUM]   0.00-10.00  sec   368 MBytes   308 Mbits/sec                  receiver

iperf Done.

What do you mean hAP conected to? For my tests I use ISP modem → sfp1 | hAP ac | eth5 → Computer.

normis · November 6, 2024, 3:57pm

Still we need to see that config, as who knows what “factory config” means. Normally using only cables you should get near gigabit.