https://bugs.winehq.org/show_bug.cgi?id=42104
Bug ID: 42104 Summary: EXT4 filesystem slows down WinRAR Product: Wine Version: unspecified Hardware: x86-64 OS: Linux Status: UNCONFIRMED Severity: major Priority: P2 Component: -unknown Assignee: wine-bugs@winehq.org Reporter: k638540@mvrht.com Distribution: ---
Hello.
Instructions to reproduce the bug:
1) create any multivolume archive with WinRAR 5.40 (older versions are probably OK too), set volume/part size to 1GB or 2GB, full archive size 5-10GB, do not use compression, only store mode
2) in the end of creating each volume you'll see 3-5 seconds lag and info "calculating the checksum 99%", but all CPU cores are doing nothing at this moment
3) bug is not present on tmpfs (ramdisk), not present on NTFS (Windows 7 @ virtualbox)
All tests were perfmormed on Ubuntu 14, 3GHz 8 cores CPU, normal HDD. I tried editing etc/fstab, I tried to add "noatime", but it didn't change anything.
In practice, when you create 100GB archive splitted into 1GB parts, entire operation is finished 10 minutes later thanks to this 3-5 seconds delay for each part.
I hope somebody can fix this. Thank you.
PS. Wine version doesn't matter. I tested pretty much everything what's available (1.4 1.5 1.6 1.8 2.0 beta).