topic Re: USB R/W Speeds drop to 1/3 using encryption in Android TV

USB R/W Speeds drop to 1/3 using encryption

hvalentim — Fri, 02 Jun 2017 09:04:52 GMT

I noticed the following:

1 - If I plug my USB Memory Stick to the USB 3.0 port of my TV and use it as external storage (extfat formated) speeds are something like.:

Read: 120 Mb/s

Write: 30 Mb/s

2 - If I let the TV format/encrypt it and use it to extend internal memory and install apps, speeds drop dramatically to something like:

Read: 40 Mb/s

Write: 10 Mb/s

Is anyone else experiencing the same?

TV is model KD-55X8005C

USB Flash Drive is Samsung USB 3.0 Flash Drive DUO 32GB

Benchmark app used is A1 SD Bench

Performance is similar in Androids v6 and v7

Re: USB R/W Speeds drop to 1/3 using encryption

Anonymous — Fri, 02 Jun 2017 10:19:08 GMT

Hi there

As a guess, the performance hit is probably the encryption/decryption process.

Cheers

Betreff: USB R/W Speeds drop to 1/3 using encryption

Kuschelmonschter — Fri, 02 Jun 2017 10:59:24 GMT

MediaTek SoC's in Sony Android TV are slow and buggy till this very day (USB, NIC, A/V,...). Don't expect this to change. Sony/MediaTek development is pretty dead. All you get is major Android updates which fix or improve nothing as problems lie within kernel and drivers...

Betreff: USB R/W Speeds drop to 1/3 using encryption

Jecht_Sin — Fri, 02 Jun 2017 11:44:56 GMT

40 MB/s? With A1 SD Bench I have got 30 MB/s top w/o encryption (and my USB pen goes up to 320/230MB/s R/W in my MacBook). Copying a file with X-plore it went as low as 5MB/s. It started at 10MB/s, though.

Betreff: USB R/W Speeds drop to 1/3 using encryption

Kuschelmonschter — Fri, 02 Jun 2017 12:48:09 GMT

Guess you are mixing up MByte/s and Mbit/s...

Betreff: USB R/W Speeds drop to 1/3 using encryption

Jecht_Sin — Sat, 03 Jun 2017 11:41:42 GMT

@Kuschelmonschter wrote:
Guess you are mixing up MByte/s and Mbit/s...

? Why? We are talking about USB 3.0 drives, not internet speeds. Actually it is even faster than what I wrote