# Wifi throughput

**URL:** <https://forums.suse.com/t/wifi-throughput/29195>\
**Category:** SLES for Raspberry Pi\
**Created:** [January 4, 2017, 12:00pm UTC](https://forums.suse.com/t/wifi-throughput/29195 "2017-01-04T12:00:38Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![hkuehnemund](https://avatars.discourse-cdn.com/v4/letter/h/c37758/32.png) [@hkuehnemund](https://forums.suse.com/u/hkuehnemund)\
**Post date:** [January 4, 2017, 12:00pm UTC](https://forums.suse.com/t/wifi-throughput/29195/1 "2017-01-04T12:00:38Z")

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Hello,

I’m running latest updates of SLES on my RasPi. However, Wifi throughput seems to be quite slow. When running an update with zypper the DL speed is somewhere between 50-150KB/sec (I have a 120MBit internet connection). Also, when copying a file from another computer via scp to the Pi, the speed is around 200KB/sec and after transferring 5-10MB the connection is terminated and the copy aborts.

Is this a known issue?

Regards,  
Hannes

---

<div class="post-metadata">

**Author:** ![malcolmlewis](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/malcolmlewis/32/11375_2.png) [@malcolmlewis](https://forums.suse.com/u/malcolmlewis)\
**Post date:** [January 4, 2017, 10:30pm UTC](https://forums.suse.com/t/wifi-throughput/29195/2 "2017-01-04T22:30:47Z")

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> [@](#):
>
> On Wed 04 Jan 2017 10:04:02 AM CST, hkuehnemund wrote:
> 
> Hello,
> 
> I’m running latest updates of SLES on my RasPi. However, Wifi throughput  
> seems to be quite slow. When running an update with zypper the DL speed  
> is somewhere between 50-150KB/sec (I have a 120MBit internet  
> connection). Also, when copying a file from another computer via scp to  
> the Pi, the speed is around 200KB/sec and after transferring 5-10MB the  
> connection is terminated and the copy aborts.
> 
> Is this a known issue?
> 
> Regards,  
> Hannes

Hi  
I see the same, but it’s not dropping the scp connection like you see,  
what sort of signal/connection are you getting? Also try turning off  
the power management as well;

```auto
iwconfig wlan0 power off

iwconfig wlan0
wlan0 IEEE 802.11bgn ESSID:"my-ssid"
Mode:Managed Frequency:2.442 GHz Access Point:
XX:XX:XX:XX:XX:XX
Bit Rate=65 Mb/s Tx-Power=31 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off <------
Link Quality=70/70 Signal level=-39 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
```

My Bit Rate does go to 72.2Mb/s, that depends on the wireless router  
itself and the Bandwidth (40 or 20MHz) and Sideband (Upper or Lower)

If I follow the log (journalctl -f) I do see some errors;

```auto
brcmfmac: brcmf_sdio_hdparse: seq XXX: sequence number error, expect YYY
```

–  
Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)  
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