[Bug 24044] Miranda and wineserver consume too many CPU cycles

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=24044

Sergiy Zuban <s.zuban at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |s.zuban at gmail.com

--- Comment #13 from Sergiy Zuban <s.zuban at gmail.com> 2011-02-22 03:41:29 CST ---
(In reply to comment #11)
> And BTW this problem mostly concerns only a custom plugin by SSS:
> http://sss.chaoslab.ru:81/tracker/icqjplus/
> 
> I've now reverted to a default ICQ plugin and CPU usage has vastly improved
> (was ~8%, now 2%).

I used miranda with ubuntu+wine for more than 3 years and CPU load wasn't a big
problem for me. But I've just migrated from ext3 to ext4 and noticed that
miranda cause continuous hard disk accesses (HDD led is always ON). I worry
that my HDD will die in near future with such activity.

In WINEDEBUG=trace+all log (attached) I see continuous 
KERNEL32.FlushViewOfFile calls when miranda is idle. Could someone take a look
on the log and confirm HDD activity caused by miranda itself but not wine?

I'm using the latest miranda 0.9.16 with standard plugins. Per what I see core
of the problem not only in ICQ plugin - jabber cause the same activity. I
believe problem in dbx_mmap.dll driver. In any case i'm going to file a but to
miranda, but anyway I can't figure out why ext4 cause such problems. Could this
be related to the way how Wine maps KERNEL32.FlushViewOfFile calls?
I've tried different mounting options in fstab, even commit=10 option which per
my understanding should avoid so frequent flushing to disk - all attempts with
no luck.

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