Support and General Use > Hardware

H140 - do SSD drives slow down over time?

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sl33py:
Hey polluxx thanks for posting here. The function that modern OS's use to improve SSD speeds is called TRIM. It cleans up the old content properly when deleted, while (from the reports of slow-downs) it seems RB doesn't.

How many changes/flushes of content on that 128GB drive did you do before you started experiencing the stutters etc? I bet it's less than the billions, or even thousands, that ppl say are required. Please tell us if you try the reformat and it works!

Seeing as my entire FLAC (converted to 320kbps) + MP3 collection wouldn't even fit on a 1TB drive, I definitely fall in the "changing content" category, as I have to cycle. I would have thought more people experience this, especially as there are so many SSD based players out there now. I wonder if there are differences between actual SSD drives and things like Compact Flash (I suspect not).

saratoga:
TRIM improves write speed, not read speed.  Write speed will be marginally worse without it, but you do not care about write speed on an MP3 player. 

You guys are worrying about nothing.

polluxx2006:
...but we're experiencing something - and that is, in fact, increasing access times the more
you overwrite data on an SSD. For example, flac should play flawlessly on an iriver H1xx.
I once copied one flac album over and have stuttering problems while buffering. It's not the
READ SPEED, it is the time it takes to access the data, and that differs from file to file...

@sl33py: oh, yes, I remember now - TRIM.

Anyway, guess we're searching for a solution, while I personally think that there ain't one,
except trying to avoid changing content on an SSD ;)

saratoga:
Lack of trim does not increase access times.

Acess times won't matter in rockbox unless they're measured in minutes.

What you are describing sounds like an ssd that isn't compatible with rockbox.

wodz:
My experience is that SSDs/CFs/SDs with adapter have problems after entering sleep mode. The wakeup of the drive can take a lot of time. It has nothing to do with access time, TRIM, throughput or anything readily available in datasheet of the drive. Considering that modern OSes can handle this I think the culprit is the ATA driver from the era of spinning disks.

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