Finder Consumes 90% CPU at file copy operation

I am trying to copy a large number of files (over 100,000) in a bunch of folders, from internal HDD to external USB one. The files are mostly images. Finder starts at a canter, with about 20 Mb/sec copy speed, and only around 5% CPU usage (NOTE - I have disabled "show icons preview" option in FInder, which is a common CPU hog in multiple image files copy operations)
After a while the CPU usage goes up to 80-90%, and the file copy operation slows down to 1-2 Mb/Sec.
I am at a loss as to what might be causing it! Any suggestions?

files are relatively small - from 100 kb to 3-5 Mb each, and the issue is - the slowdown occurs quite some time after the beginning of the file copy operation - for several minutes it goes OK, with Finder consuming only below 10% CPU, and copy speed 20Mb/sec. It is only AFTER SOME TIME that the issue starts to happen - and the files being copied are THE SAME TYPE FILES. and suddenly the speed drops to 1-2 Mb/sec, and CPU usage jumps up. The result - it takes ages to copy and overloads CPU.
So it must be a bug somewhere.
I cannot use Firewire, since the external drive is USB 2.0 which when it works as its supposed to (transfer speed 20-30 Mb/sec) is quite acceptable to me.
Surely I am trying to copy smaller batches of files - but that is a workaround, not a solution!

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Network speed affected by large file copy operations. Also, why intermittent network outages?

Hi
I have a couple of issues on our company network.
The first is thate a single large file copy imapcts the entire network and dramatically reduces network speed and the second is that there are periodic outages where file open/close/save operations may appear to hang, and also where programs that rely on
network connectivity e.g. email, appear to hang. It is as though the PC loses it's connection to the network, but the status of the network icon does not change. For the second issue if we wait the program will respond but the wait period can be up to 1min.
The downside of this is that this affects Access databases on our server so that when an 'outage' occurs the Access client cannot recover and hangs permamnently.
We have a Windows Active Directory domain that comprises Windows 2003 R2 (soon to be decommissioned), Windows Server 2008 Standard and Windows Server 2012 R2 Standard domain controllers. There are two member servers: A file server running Windows 2008 Storage
Server and a remote access server (which also runs WSUS) running Windows Server 2012 Standard. The clients comprise about 35 Win7 PC's and 1 Vista PC.
When I copy or move a large file from the 2008 Storage Server to my Win7 client other staff experience massive slowdowns when accessing the network. Recently I was moving several files from the Storage Server to my local drive. The files comprised pairs
(e.g. folo76t5.pmm and folo76t5.pmi), one of which is less than 1MB and the other varies between 1.5 - 1.9GB. I was moving two files at a time so the total file size for each operation was just under 2GB.
While the file move operation was taking place a colleague was trying to open a 36k Excel file. After waiting 3mins he asked me for help. I did some tests and noticed that when I was not copying large files he could open the Excel file immediately. When
I started copying more data from the Storage Server to my local drive it took several minutes before his PC could open the Excel file.
I also noticed on my Win7 client that our email client (Pegasus Mail), which was the only application I had open at the time would hang when the move operation was started and it would take at least a minute for it to start responding.
Ordinarlily we work with many files
Anyone have any suggestions, please? This is something that is affecting all clients. I can't carry out file maintenance on large files during normal work hours if network speed is going to be so badly impacted.
I'm still working on the intermittent network outages (the second issue), but if anyone has any suggestions about what may be causing this I would be grateful if you could share them.
Thanks

What have you checked for resource usage during one of these copies of a large file?
At a minimum I would check Task Manager>Resource Monitor. In particular check the disk and network usage. Also, look at RAM and CPU while the copy is taking place.
What RAID level is there on the file server?
There are many possible areas that could be causing your problem(s). And it could be more than one thing. Start by checking these things. And go from there.
Hi, JohnB352
Thanks for the suggestions. I have monitored the server and can see that the memory is nearly maxed out with a lot of hard faults (varies between several hundred to several thousand), recorded during normal usage. The Disk and CPU seem normal.
I'm going to replace the RAM and double it up to 12GB.
Thanks! This may help with some other issues we are having. I'll post back after it has been done.
[Edit]
Forgot to mention: there are 6 drives in the server. 2 for the OS (Mirrored RAID 1) and 4 for the data (Striped RAID 5).

File Copy Operation

Hi,
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Any way to change system sounds such as File Copy Completed sound?

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Jonathan

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I got used to the fact that in Linux and Windows I can specify whatever sound I like for whatever system event I like.
Not the case on OSX?
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"puneet" <[email protected]> wrote in message
news:3fcf4fa4$[email protected]..
>
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Macbook Pro
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Subhash,
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Re: how to get top CPU consuming sql oracle 10g
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http://www.dba-oracle.com/oracle10g_tuning/t_sql_top_sessions.htm
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My MacBook Pro won't load any websites on Safari (except this site, Facebook and Google), Opera, or Mozilla Firefox. I already did the "Reset Safari", restarted the computer half a dozen times, and I can't find this alleged "caches.db" file to delete.

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Don’t supply your password in response to a popup window requesting it, unless you know what it is and the reason your credentials are required.
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Hello Bibin,
Give this a try., if i understood correctly. I coudn't test it my side.
$servers = get-content C:\hosts.txt
foreach ($server in $servers)
if(test-path \\Centralserver\share\$server)
if(test-path \\$server\c$\xxx.file)
Copy -path \\$server\c$\xxx.file -Destination \\CentralServer\share\$server\ -Recurse -ErrorVariable CopyErrorS
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Regards,
V.
Venu

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In the meantime, it appears that the "ditto" command with the -rsrcFork flag will copy files correctly.
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isnt working for me.. getting this:
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Explorer.exe consuming 100% CPU after resuming from hibernation

Hello,
For the last months, I repeatedly have the problem that sometimes (every 2nd or 3rd time) after resuming from hibernation, in a few cases also after disconnecting from the Internet, one or more instances of explorer.exe are consuming 100% CPU, but never
the shell instance.
I tried figuring out what it was doing, but I was unsuccessful so far.
Here is a stack of the thread which consumed most of the CPU:
0, ntoskrnl.exe!KiDeliverApc+0x166
1, ntoskrnl.exe!KiSwapThread+0x31f
2, ntoskrnl.exe!KiCommitThreadWait+0x129
3, ntoskrnl.exe!ExpWaitForResource+0x29f
4, ntoskrnl.exe!ExEnterPriorityRegionAndAcquireResourceExclusive+0x1ad
5, win32k.sys!EnterCritAvoidingDitHitTestHazard+0x13
6, win32k.sys!NtUserMessageCall+0x28
7, ntoskrnl.exe!KiSystemServiceCopyEnd+0x13
8, user32.dll!NtUserMessageCall+0xa
9, user32.dll!SendMessageWorker+0x168
10, user32.dll!SendMessageW+0xfb
11, ExplorerFrame.dll!CNscTree::_TreeInvalidateItemInfo+0xd0
12, ExplorerFrame.dll!CNscTree::_EnumBackgroundDone+0xb4a14
13, ExplorerFrame.dll!CNscTree::OnQIUpdateEnumDone+0x93
14, ExplorerFrame.dll!CNscEnumQueueItem::Dispatch+0xcf
15, ExplorerFrame.dll!CTaskLock::DispatchQueueItem+0xc5
16, ExplorerFrame.dll!CNscTree::_SubClassTreeWndProc+0x118
17, ExplorerFrame.dll!CNscTree::s_SubClassTreeWndProc+0x5f
18, comctl32.dll!CallNextSubclassProc+0xe0
19, comctl32.dll!MasterSubclassProc+0xa2
20, user32.dll!UserCallWinProcCheckWow+0x149
21, user32.dll!DispatchMessageWorker+0x1a7
22, AppVEntSubsystems64.dll!VirtualizeCurrentThread+0x1e492
23, ExplorerFrame.dll!CExplorerFrame::FrameMessagePump+0xe3
24, ExplorerFrame.dll!BrowserThreadProc+0x5e
25, ExplorerFrame.dll!BrowserNewThreadProc+0x3a
26, ExplorerFrame.dll!CExplorerTask::InternalResumeRT+0x12
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28, shell32.dll!CShellTaskThread::ThreadProc+0x2a3
29, shell32.dll!CShellTaskThread::s_ThreadProc+0x2f
30, SHCore.dll!StrRetToBSTR+0x19f
31, kernel32.dll!BaseThreadInitThunk+0x22
32, ntdll.dll!RtlUserThreadStart+0x34
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In case you need this information, this is a list of my shell extensions/copy hooks/context menu handlers/drag&drop handlers (without duplicates):
+ " SkyDrivePro1 (ErrorConflict)" "Microsoft OneDrive for Business Extensions" "Microsoft Corporation" "c:\program files\microsoft office 15\root\vfs\programfilesx64\microsoft office\office15\grooveex.dll" "12.11.2014 01:13"
+ "{C52AF81D-F7A0-4AAB-8E87-F80A60CCD396}" "" "Apache Software Foundation" "c:\program files (x86)\openoffice 4\program\shlxthdl\shlxthdl.dll" "20.09.2013 12:50"
+ "{C52AF81D-F7A0-4AAB-8E87-F80A60CCD396}" "" "Apache Software Foundation" "c:\program files (x86)\openoffice 4\program\shlxthdl\shlxthdl_x64.dll" "20.09.2013 12:41"
+ "7-Zip" "7-Zip Shell Extension" "Igor Pavlov" "c:\program files\7-zip\7-zip32.dll" "18.04.2011 19:34"
+ "7-Zip" "7-Zip Shell Extension" "Igor Pavlov" "c:\program files\7-zip\7-zip.dll" "18.04.2011 19:35"
+ "ANotepad++64" "ShellHandler for Notepad++ (64 bit)" "" "c:\program files (x86)\notepad++\nppshell_06.dll" "12.05.2014 10:49"
+ "Ath_CopyHook" "Bluetooth File Transfer Plugin" "Qualcomm®Atheros®" "c:\program files (x86)\bluetooth suite\folderviewimpl.dll" "25.09.2013 10:58"
+ "Atheros" "Atheros Bluetooth Module" "Qualcomm®Atheros®" "c:\program files (x86)\bluetooth suite\btvappext.dll" "25.09.2013 10:58"
+ "DropboxExt" "Dropbox Shell Extension" "Dropbox, Inc." "c:\users\david\appdata\roaming\dropbox\bin\dropboxext64.24.dll" "24.06.2014 01:32"
+ "DropboxExt1" "Dropbox Shell Extension" "Dropbox, Inc." "c:\users\david\appdata\roaming\dropbox\bin\dropboxext.24.dll" "24.06.2014 01:31"
+ "FTShellContext" "Atheros Bluetooth Module" "Qualcomm®Atheros®" "c:\program files (x86)\bluetooth suite\shellcontextext.dll" "25.09.2013 10:58"
+ "GDContextMenu" "Google Drive shell extension" "Google" "c:\program files (x86)\google\drive\contextmenu64.dll" "16.01.2015 01:57"
+ "GDriveBlacklistedOverlay" "Google Drive shell extension" "Google" "c:\program files (x86)\google\drive\googledrivesync64.dll" "16.01.2015 01:56"
+ "igfxcui" "igfxpph Module" "Intel Corporation" "c:\windows\system32\igfxpph.dll" "09.09.2013 18:26"
+ "LockHunterShellExt" "LockHunter Explorer Extension" "Crystal Rich Ltd" "c:\program files\lockhunter\lhshellext32.dll" "25.03.2009 08:53"
+ "LockHunterShellExt" "LockHunter Explorer Extension" "Crystal Rich Ltd" "c:\program files\lockhunter\lhshellext64.dll" "28.04.2009 10:21"
+ "PDF Shell Extension" "PDF Shell Extension" "Adobe Systems, Inc." "c:\program files (x86)\common files\adobe\acrobat\activex\pdfshell.dll" "11.05.2013 10:34"
+ "PushbulletCtx" "" "" "File not found: :/Program Files (x86)/Pushbullet/pushbullet_ctx.DLL" ""
+ "RecuvaShellExt" "Recuva shell extensions" "Piriform Ltd" "c:\program files\recuva\recuvashell64.dll" "14.03.2014 12:41"
+ "SD360" "360 Total Security" "" "c:\program files (x86)\360\total security\menuex64.dll" "12.01.2015 03:55"
+ "SourceGearDiffMergeShellExtension32" "SourceGear DiffMerge ShellExtension 32" "SourceGear LLC" "c:\program files (x86)\sourcegear\common\diffmerge\sourcegeardiffmergeshellextension32.dll" "23.10.2013 19:15"
+ "SourceGearDiffMergeShellExtension64" "SourceGear DiffMerge ShellExtension 64" "SourceGear LLC" "c:\program files\sourcegear\common\diffmerge\sourcegeardiffmergeshellextension64.dll" "23.10.2013 19:17"
+ "StartMenuExt" "Start Menu Helper Extension" "IvoSoft" "c:\windows\syswow64\startmenuhelper32.dll" "20.04.2014 18:17"
+ "StartMenuExt" "Start Menu Helper Extension" "IvoSoft" "c:\windows\system32\startmenuhelper64.dll" "20.04.2014 18:16"
+ "WinRAR32" "WinRAR shell extension" "Alexander Roshal" "c:\program files\winrar\rarext32.dll" "02.12.2014 11:07"
+ "WinRAR" "WinRAR shell extension" "Alexander Roshal" "c:\program files\winrar\rarext.dll" "02.12.2014 11:07"
+ "WinSCPCopyHook" "Drag&Drop shell extension for WinSCP (64-bit)" "Martin Prikryl" "c:\program files (x86)\winscp\dragext64.dll" "14.08.2013 12:22"
I you have any clue what might be going, I would be very happy to hear it. It's really annoying, as I have to kill explorer.exe and thereby close all my folder windows when this happens.
Thank you!
Best regards,
David Trapp

Hello,
thanks for having a look. However, I already ran SFC before posting on this forum (as part of my own investigation) and it came back clean. RescueTime (a time tracking tool) is probably not the culprit because it happened also several times in the past without
RescueTime being running (that was because I had accidentally removed it from autorun at that time).
Unfortunately, I can't follow your "invalid date" explanation. I don't think an "invalid date" is anywhere involved; in fact, the method in question is called "_TreeInvalidateItemInfo" and not "_TreeInvalidDateItemInfo"
(note that there is only one "d"), so I assume its job is just to invalidate (and in turn, refresh) the cached information about nodes in the left pane's folder tree of the explorer window(s) - since the folder tree is the only NamespaceTreeControl
(whose corresponding class name is CNscTree) in explorer folder view windows. As I see it, something is causing explorer to repeatedly refresh the folder tree data, but I am stuck at finding out what exactly.
Best regards,
David Trapp
EDIT: Disassembling ExplorerFrame!CNscTree::_TreeInvalidateItemInfo confirms that, because it seems to call TreeView_SetItem for a tree node and its parent (possibly with all fields set to *_CALLBACK), and CNscTree::_UpdateItemDisplayInfo
for the parent node.
EDIT2: I'd love to dig more into the trace, however I am hitting a wall at function names/addresses. Everywhere where I would expect a function name/address (such as the "by stack" views), I only see question marks instead. What
could be the reason?

Finder Consumes 90% CPU at file copy operation

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