Personal computing discussed
Moderators: renee, morphine, Steel
Buub wrote:The SSD pass doesn't actually defrag, from what I've read. Basically it just consolidates free space or something like that.
Buub wrote:The SSD pass doesn't actually defrag, from what I've read. Basically it just consolidates free space or something like that.
ChronoReverse wrote:I'm fairly certain that what's presented as "contiguous" to the system isn't even necessarily so internally due to the wear-leveling algorithms (as well as sector remapping if your drive is on its way out). All defragging an SSD does is use up more writes.
meerkt wrote:What do you think of Defraggler?
It seems popular, but I don't get it. It adds fragmentation by breaking apart large files (maybe because I'm stopping it in the middle), the time estimation is way off and is disconnected from other stats (2GB fragmented, 20 hours to go?), the stats and progress indicators are unclear about the what and why it's doing whatever it is doing.
ChronoReverse wrote:In fact it does defrag these days, due to specifically what you mentioned:
https://www.hanselman.com/blog/TheRealA ... urSSD.aspx
It was news to me too.
Yan wrote:Defraggler works well for me. I find it useful to defragment specific files
If you interrupt it while it's working, that could be the reason why you find it adds fragmentation.
meerkt wrote:If you interrupt it while it's working, that could be the reason why you find it adds fragmentation.
Maybe. But I don't want defraggers to fragment files during work, even temporarily. It's especially a problem combined with the poor time left estimations. You have no idea how long it's going to take.
jihadjoe wrote:That bit about SSDs was interesting and indeed quite educational.
Thinking back on how NAND cells have an endurance rating, it does make sense to at least move data blocks around otherwise all the wear ends up concentrated on the unused NAND blocks, while blocks that have been constantly occupied will hardly see any wear at all.
just brew it! wrote:On a nearly full or badly fragmented disk, temporarily making things worse on the way to making them better may be unavoidable.
meerkt wrote:just brew it! wrote:On a nearly full or badly fragmented disk, temporarily making things worse on the way to making them better may be unavoidable.
There was enough space for all the files it fragmented, combined, to be moved elsewhere contiguously.