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sashahc

Fix loading stutter with RAID 0?

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We are creating a video wall with the following hardware:

8 @ HP Z800 computers with ATI V9800 FirePro + S400 Sync Module. Currently, we have two SSD's: 1 for OS and 1 for media.

 

We are running 5 @ 1080p sync'd MPEG 2 videos from each machine and are seeing a slight stutter when loading new media (all 5 streams at once.) We've tried various preload settings, but they seem to cause the videos to start out of sync.

 

Would we see performance improvement by making the media disc a striped RAID array? Alternately, is there a way to do preloading so it doesn't interfere with the video starting?

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sashahc, what is the frame rate of your 1080p videos?

 

What processor and SSD is used?

/jonas

That is certainly a valid question. HP Z800 is fairly generic.

Covers two motherboards, 14 potential processors and even more drive storage options.

Both the available motherboards indicated in the above spec are for aging standards

replaced in 2011 with higher throughput versions.

Seems those motherboards only support SATA-II,

SATA-III with double the throughput would usually be required for the demands you indicate.

 

Would we see performance improvement by making the media disc a striped RAID array? Alternately, is there a way to do preloading so it doesn't interfere with the video starting?

Depends on if the limiting factor is the drive throughput, motherboard throughput or processor throughput (QPI).

With such a general spec, it is impossible to tell.

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Stuttering can have different reasons, hardware issues is but one of them. Frame-rate and/or bit-rate based issues is another. Mac or Windows based encoding does not have much to do with that, but how it's done certainly has.

 

/jonas

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