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Bananian Linux is no longer under active development. Read more...2020-01-18 19:33 CET
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|ID||Project||Category||View Status||Date Submitted||Last Update|
|0000208||Bananian Linux||[All Projects] Hardware||public||2016-04-28 09:01||2016-05-14 10:37|
|Status||closed||Resolution||unable to reproduce|
|Target Version||Fixed in Version|
|Summary||0000208: USB transfers slow with Bananian 16.04 (was > 20MB/s with 15.08, now 1MB/s with 16.04)|
|Description||As stated in summary I noticed a significant loss of transfer speed with the new Bananian 16.04 (Kernel issue?)|
Read and write speed slowed down to about 5% of expected speed.
I happened after the update.
Sourcefile taken from a SSD attached to SATA port.
Target was an USB attached ext4 formatted 2,5" Intenso HDD. Tried with 2 different HDDs on both USB ports.
Never got more than 2 MB/s. Most of the time 1MB/s.
(Very annoying as this is my NAS with video files on it.)
Issue 0000207 (https://dev.bananian.org/view.php?id=207 [^]) can be closed as I supposed it to be a network issue first.
|Tags||No tags attached.|
edited on: 2016-04-28 18:46
I cannnot reproduce the issue with Bananain 16.04.
I have tried the following:
root@bananapi ~ # dd if=dumpfile of=/mnt/test bs=1M
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 3.54317 s, 29.6 MB/s
(/mnt/test is a USB pen drive formatted with ext4)
Then I've installed nfs-kernel-server and exported /mnt:
I've mounted it on another machine (Xubuntu 16.04) and:
root@nico-desktop /mnt # dd if=test of=/root/blabla bs=1M
100+0 Datensätze ein
100+0 Datensätze aus
104857600 bytes (105 MB, 100 MiB) copied, 8,92271 s, 11,8 MB/s
(100 Mbit/s Ethernet)
Plese describe your configuration in detail and provide steps to reproduce the issue.
edited on: 2016-04-28 19:43
Meanwhile during my tests the bananapi hung completely so I had to do a cold boot with separating from power.
I did a fsck afterwards on all drives.
My USB test disk now has normal speed but the other disk is still slow.
The diffenrence is that the slow disk is a 2 GB intenso 2,5" in a USB-3(!) external case
The "speedy"-test-disk an intenso 1 GB 2,5" in an external USB-2 case.
I'm moved my files from USB-3 disk to the USB-2 disk with both drives attached to my laptop performing with about 40MB/s, so I guess the disks are alright.
Maybe there's an issue with USB-3 devices attached to the bananapi USB2 port?
But if I'm the only one experiencing this problem and you cannot reproduce it, please don't investigate any further.
|I did use a USB 3.0 pen drive for testing. I will do some more testing during the weekend.|
After 1 day with the USB2 intenso disk I recognized that it is faster in response and in transfer speed than the USB3 disk.
It is even faster than in the "good old times" of the USB-3 disk. :-) I'll stay with that drive.
I forgot to mention that I got some of the "ata1 link is slow to respond please be patient (ready=0)" messages in dmesg with the USB-3 drive after I switched to 16.04.
Sometimes I wasn't able to boot with the USB-3 drive. 15.08 and 16.04. The drive wasn't detected.
I suppose that it has something to do with the power supply. Maybe on the edge of specification? To little power for the USB-3 drive???
If you cannot reporoduce hte behaviour then please close this ticket.
|Which board do you have? M1? Pro? M1+? R1?|
|unable to reproduce and no feedback,|
|2016-04-28 09:01||peter||New Issue|
|2016-04-28 18:25||Nico||Assigned To||=> Nico|
|2016-04-28 18:25||Nico||Status||new => assigned|
|2016-04-28 18:45||Nico||Note Added: 0000370|
|2016-04-28 18:46||Nico||Note Edited: 0000370||View Revisions|
|2016-04-28 19:41||peter||Note Added: 0000371|
|2016-04-28 19:43||peter||Note Edited: 0000371||View Revisions|
|2016-04-28 19:50||Nico||Note Added: 0000372|
|2016-04-30 11:48||peter||Note Added: 0000376|
|2016-04-30 11:51||Nico||Note Added: 0000377|
|2016-05-14 10:37||Nico||Note Added: 0000383|
|2016-05-14 10:37||Nico||Status||assigned => closed|
|2016-05-14 10:37||Nico||Resolution||open => unable to reproduce|
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