Slow download/write RevPi core

jenskastensson · Post by **jenskastensson** » 14 Jan 2020, 14:53

Hi, I have a problem with increasingly slow and long write operation of image file to RevPi core 3 (stretch)
The image file is 3.8Gb it used to be 11-12 minutes to write at 5.5 Mbits/s I think.
Now the download usually starts at 1 Mbit/s and it can take up to ~40 minutes to write.
Sometimes the download starts at 5.5 but slows down after a minute or so.
I've tried different (short/longer/makes) cables, different ports, different PC's but I haven't really found a pattern.
Do you any ideas or recommendations?

Post by **dirk** » 15 Jan 2020, 13:17

Hi jenskastensson, which program are you using to write the image?
In case you use "dd" you can use 1Mb block size to increase the transfer speed.

jenskastensson · Post by **jenskastensson** » 17 Jan 2020, 13:31

Thanks for the tip, however nearly all our computers run Windows, where we use Win32DiskImager.

Post by **dirk** » 21 Jan 2020, 16:41

Hi, this seams like a strange behaviour. Can you try to test it with Linux? I also usualy use Win32DiskImager to flash images. I never had such suspicious performance issues yet.