[PROBLEM] Video Stutter

[nertskull]

(3rd Oct, 2013 12:49 AM)IriDium Wrote:  I've just done a Test on Beta 1.2 vs Raspbmc - albeit via USB HDD and not NFS.

Same hardware - same RPi, same file.

Xbian ~ 18MB/s
Raspbmc ~ 15MB/s

If I'm correct - USB2 max speed is ~60 MB/s, and the N/W 10/100 is max 100mbits or ~ 12MB/s.

Allright, I agree. It doesn't make any sense to see raspberry pi speeds that fast. Its gotta be a caching issue. Because I've run it again, and I get more normal results the first time, then something faster.

Code:

pi@raspbmc:~$ dd if=/media/Aspartic_Acid/media/video/Movies/ProcessedBD/The_Lord_Of_The_Rings_The_Fellowship_Of_The_Ring_2001_extended_Disc_1.mkv of=/dev/null bs=1M count=150
150+0 records in
150+0 records out
157286400 bytes (157 MB) copied, 22.3734 s, 7.0 MB/s
pi@raspbmc:~$ dd if=/media/Aspartic_Acid/media/video/Movies/ProcessedBD/The_Lord_Of_The_Rings_The_Fellowship_Of_The_Ring_2001_extended_Disc_1.mkv of=/dev/null bs=1M count=150
150+0 records in
150+0 records out
157286400 bytes (157 MB) copied, 1.32309 s, 119 MB/s

So 7MB/s the first time. I've tried it with different files that haven't been played at all. And they also show reasonable speeds in the 7-8 MB/s neighborhood.

So I take back that its probably an NFS issue. The NFS seems to be fine both on raspbmc and Xbian.

(3rd Oct, 2013 02:27 AM)rikardo1979 Wrote:  so after reading the inputs from all of you I start to think if there is maybe and some firmware/kernel mismatch or something like that.I dont see that actual XBMC or XBian causing this issue.
But as I said, its just my feeling

I don't know how to do anything about that.

But I'm working on finding a way to get a minute or two of my video saved. I'll post once I've got that figured out as a sample for people.

Thanks