R-Studio - slow data extraction
Posted: Wed Apr 15, 2015 11:01 am
I've posted the new update into the old post http://forum.r-tt.com/recovering-data-i ... low#p11539, but still don't see it there, so I've decided to open the new thread instead.
This problem - slow data extraction speed with R-Studio on some file systems has been bothering me for more than a year, and it's still not fixed.
I kept trying to find out what's is exactly the issue for the last 6 months, tried different computers, OS, drives, file systems, and it looks like the common problem is the following - when a recovered file system has too many folders (multi-level folder tree) and/or files, and especially if it's not NTFS, the extraction speed is terribly slow - like 1-3 files per second (small files usually).
Using UFS Explorer in exactly the same environment (running in parallel on the same computer) shows at least 10x faster extraction speed, and it's the same fast if I just copy files via Windows.
Extraction of large files has NO such issues, and the speed is about the same for both R-Studio and UFS.
Just recently I had a recovery from NTFS volume with 14 mln files in 7 mln folders (8.5 GB of RAM was used), and the extraction speed was exactly 2 files/sec (SATA to SATA). ETA was shown as ~ 50 days.
UFS Explorer has worked just fine on the same machine doing ~ 50 files/sec, with ETA of 2 days - feel the difference.
So, for me it looks like something is wrong with R-Studio engine, specifically how it's processing file/folder creation requests, especially for large, milti-level file systems.
Also, I usually use different masking - not sure if it has any impact here.
It's all pretty sad because I prefer R-studio to UFS Explorer, so could you please try to check this issue and fix it?
This problem - slow data extraction speed with R-Studio on some file systems has been bothering me for more than a year, and it's still not fixed.
I kept trying to find out what's is exactly the issue for the last 6 months, tried different computers, OS, drives, file systems, and it looks like the common problem is the following - when a recovered file system has too many folders (multi-level folder tree) and/or files, and especially if it's not NTFS, the extraction speed is terribly slow - like 1-3 files per second (small files usually).
Using UFS Explorer in exactly the same environment (running in parallel on the same computer) shows at least 10x faster extraction speed, and it's the same fast if I just copy files via Windows.
Extraction of large files has NO such issues, and the speed is about the same for both R-Studio and UFS.
Just recently I had a recovery from NTFS volume with 14 mln files in 7 mln folders (8.5 GB of RAM was used), and the extraction speed was exactly 2 files/sec (SATA to SATA). ETA was shown as ~ 50 days.
UFS Explorer has worked just fine on the same machine doing ~ 50 files/sec, with ETA of 2 days - feel the difference.
So, for me it looks like something is wrong with R-Studio engine, specifically how it's processing file/folder creation requests, especially for large, milti-level file systems.
Also, I usually use different masking - not sure if it has any impact here.
It's all pretty sad because I prefer R-studio to UFS Explorer, so could you please try to check this issue and fix it?