[Bug 42104] New: EXT4 filesystem slows down WinRAR

[wine-bugs at winehq.org]

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 at winehq.org
          Reporter: k638540 at 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).

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