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FULL system pause/hang while saving each file (SSD HDD)

Posted: Thu Jul 08, 2010 5:05 pm
by Hiquin
I have an SSD Hard drive in my laptop, and once UE finishes downloading all parts of a file and the little progress bar in the bottom right starts to say "saving file ..." etc, my hole system will hang while UE writes that file to the disc. and then as soon as it's done saving it, the whole system comes back to life and continues on it's merry little way.

with my internet being 25mbit, if there's a bunch of 15Mb files, by the time it finishes saving one file, the next file has downloaded in the background(even though the system appears frozen, UE can still download in the background a little bit.. not full speed though), and then it starts saving the next file, keeping my system all hung up.

It doesn't do this on my desktop PC, which is only a dual core, with regular SATA HDDs. This laptop has a core i7 in it, and an SSD.

Is this a bug in the way UE writes files to disc not playing well with SSD hard drives? any suggestions/ideas?

Re: FULL system pause/hang while saving each file (SSD HDD)

Posted: Thu Jul 08, 2010 5:37 pm
by Hiquin
I was just monitoring system performance while UE was downloading.

Each time it saves a file, (assembling the bodies), system resource monitor shows that UE is (Not Responding), and that my internet speeds drop from 28,000kbps down to 32kbps or less. until the file finishes saving, and then everything pops back up to normal.

Re: FULL system pause/hang while saving each file (SSD HDD)

Posted: Fri Jul 09, 2010 12:53 pm
by alex
No bugs, just it is the way UE works, it writes files into db cache and saves from the cache to the destination drive, if everything happens on the same drive maybe the SSD is in the worse position since accesses are optimized for sequentional operation, so when there is less randomness hard drive is faster.

In the next version UE (still v2.9.x) will have an option to save directly into files (the option is already in the current version settings but not yet engaged), maybe it will work faster there. I started working on the feature yesterday, it will take few days.

Re: FULL system pause/hang while saving each file (SSD HDD)

Posted: Fri Jul 09, 2010 1:04 pm
by Hiquin
Sounds good, looking forward to giving that a try.
Thanks