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Finished pieces stay in cache and never write to disk.


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Hey all,

Totally new problem with 1.7.6. I'd never before encountered the 'disk overload 100%' issue, even though I've used large torrents many times. And after tweaking the disk cache options I've stumbled on a new issue. After downloading, the finished pieces never write to the disk and just pile up in the 'pieces' window. Did I flip the wrong switch or is this a bug?

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Persistently staying in the Pieces tab would be a bug. However I do suspect you're not waiting long enough. Unchecking write out finished pieces immediately tries to lessen disk access by changing the dump to disk operations for pieces to be every 20? or 30 seconds... instead of immediate, which results in less seeking. But like Ultima said above, a current state of the Disk Cache pane would be useful :)

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Sorry guys...been out of action for a few days.

I'm overriding the automatic cache size and have set it to 500 megs, which resolves the overload.

Reduce Memory usage .......check

Enable Caching of writes....check

Write out untouched blocks....uncheck

write out finished pieces.....uncheck

Enable Caching of reads....check

Turn off read caching....check

Remove old blocks.....check

Increase automatic cache.....check

It seems to write ok for a few minutes....then stops dumping to disk. Closing and reopening uTorrent or restarting fixes the problem, but only for a few minutes. Thanks for your help.

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I'm thinking you have a poorly-performing program injected into uT. Could you post a process explorer dll list for utorrent.exe (download zip, open procexp.exe, Ctrl-L, Ctrl-D, click utorrent.exe, Ctrl-A, copy-paste below)... :/ Even downloading at my peak bittorrent download of 3 Mbit it writes to disk (as exhibited from pieces tab) every 20 seconds.

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here's what it gave me

Process PID CPU Description Company Name

System Idle Process 0 47.93

Interrupts n/a Hardware Interrupts

DPCs n/a Deferred Procedure Calls

System 4

smss.exe 420

csrss.exe 488

wininit.exe 536

services.exe 580

svchost.exe 744

mcagent.exe 2480 McAfee Integrated Security Platform McAfee, Inc.

ehmsas.exe 4324 Media Center Media Status Aggregator Service Microsoft Corporation

CCU_Engine.exe 4968 Intel® Viiv™ Settings Intel® Corporation

WmiPrvSE.exe 5568

FlashUtil9d.exe 5352 Adobe Flash Player Helper 9.0 r47 Adobe Systems, Inc.

svchost.exe 836

svchost.exe 892

svchost.exe 932

audiodg.exe 1076

svchost.exe 964

WUDFHost.exe 2836

dwm.exe 3504 0.38 Desktop Window Manager Microsoft Corporation

svchost.exe 984

taskeng.exe 3836

taskeng.exe 4000 Task Scheduler Engine Microsoft Corporation

SLsvc.exe 1108

svchost.exe 1160

svchost.exe 1260 0.38

spoolsv.exe 1472

svchost.exe 1496

AlertService.exe 1940

AppleMobileDeviceService.exe 1956

DQLWinService.exe 1980

IAANTmon.exe 2028

McProxy.exe 468

Mcshield.exe 492

MpfSrv.exe 1068

msksrver.exe 1184

NMSCore.exe 2156

svchost.exe 2208


QualityManager.exe 2244

SAService.exe 2264

stacsv.exe 2304

svchost.exe 2348

ViewpointService.exe 2376

svchost.exe 2416

SearchIndexer.exe 2456

SearchProtocolHost.exe 4792

SearchFilterHost.exe 4864

XAudio.exe 2488

issm.exe 2516

MCLServiceATL.exe 2552

Remote UI Service.exe 3220

mediaserver.exe 3252

mcmscsvc.exe 3800

iPodService.exe 5668

mcsysmon.exe 5856

usnsvc.exe 860

McNASvc.exe 2740

TrustedInstaller.exe 7020

lsass.exe 592

lsm.exe 604

csrss.exe 548

winlogon.exe 776

explorer.exe 3544 Windows Explorer Microsoft Corporation

MSASCui.exe 3464 Windows Defender User Interface Microsoft Corporation

CCU_TrayIcon.exe 2724 Intel® Viiv™ Settings Intel® Corporation

IAAnotif.exe 2704 Event Monitor User Notification Tool Intel Corporation

sttray.exe 3472 Sigmatel Audio system tray application SigmaTel, Inc.

GoogleDesktop.exe 2896 Google Desktop Google

GoogleDesktopIndex.exe 948 Google Desktop Google

GoogleDesktopCrawl.exe 4140 49.81 Google Desktop Google

napster.exe 2588 Napster Napster

bigfix.exe 3520 BigFix Client Application BigFix Inc.

SiteAdv.exe 2108 SiteAdvisor McAfee, Inc.

rundll32.exe 3684 Windows host process (Rundll32) Microsoft Corporation

iTunesHelper.exe 2368 iTunesHelper Module Apple Inc.

YahooMessenger.exe 2092 Yahoo! Messenger Yahoo! Inc.

msnmsgr.exe 1328 Messenger Microsoft Corporation

aim6.exe 3792 AIM AOL LLC

aolsoftware.exe 6080 AOL AOL LLC

Weather.exe 3648 AWS Convergence Technologies, Inc.

ehtray.exe 4008 Media Center Tray Applet Microsoft Corporation

MySpaceIM.exe 3816 MySpace Instant Messenger

MySpaceIM.exe 2512 MySpace Instant Messenger

iTunes.exe 6844 iTunes Apple Inc.

AppleMobileDeviceHelper.exe 5428 AppleMobileDeviceHelper

distnoted.exe 7860 distnoted.exe

uTorrent.exe 1828 0.38

rundll32.exe 3460 Windows host process (Rundll32) Microsoft Corporation

ieuser.exe 7980 Internet Explorer Microsoft Corporation

iexplore.exe 2980 Internet Explorer Microsoft Corporation

AcroRd32.exe 6952 Adobe Reader 8.1 Adobe Systems Incorporated

WinRAR.exe 6732

procexp.exe 2532 0.75 Sysinternals Process Explorer Sysinternals

Process: uTorrent.exe Pid: 1828

Name Description Company Name Version

ADVAPI32.dll Advanced Windows 32 Base API Microsoft Corporation 6.00.6000.16386

apphelp.dll Application Compatibility Client Library Microsoft Corporation 6.00.6000.16386

CLBCatQ.DLL COM+ Configuration Catalog Microsoft Corporation 2001.12.6930.16386

COMCTL32.dll User Experience Controls Library Microsoft Corporation 6.10.6000.16386

comdlg32.dll Common Dialogs DLL Microsoft Corporation 6.00.6000.16386

dhcpcsvc.DLL DHCP Client Service Microsoft Corporation 6.00.6000.16512

dhcpcsvc6.DLL DHCPv6 Client Microsoft Corporation 6.00.6000.16512

DNSAPI.dll DNS Client API DLL Microsoft Corporation 6.00.6000.16386

FirewallAPI.dll Windows Firewall API Microsoft Corporation 6.00.6000.16501

GDI32.dll GDI Client DLL Microsoft Corporation 6.00.6000.16386

idle.dll Idle Module Yahoo! Inc. 1.00.0000.0002

iertutil.dll Run time utility for Internet Explorer Microsoft Corporation 7.00.6000.16386

IMM32.DLL Multi-User Windows IMM32 API Client DLL Microsoft Corporation 6.00.6000.16386

Iphlpapi.dll IP Helper API Microsoft Corporation 6.00.6000.16386

kernel32.dll Windows NT BASE API Client DLL Microsoft Corporation 6.00.6000.16386



LPK.DLL Language Pack Microsoft Corporation 6.00.6000.16386

MSCTF.dll MSCTF Server DLL Microsoft Corporation 6.00.6000.16386

MSVCR71.dll Microsoft® C Runtime Library Microsoft Corporation 7.10.3052.0004

msvcrt.dll Windows NT CRT DLL Microsoft Corporation 7.00.6000.16386

mswsock.dll Microsoft Windows Sockets 2.0 Service Provider Microsoft Corporation 6.00.6000.16386

napinsp.dll E-mail Naming Shim Provider Microsoft Corporation 6.00.6000.16386

NLAapi.dll Network Location Awareness 2 Microsoft Corporation 6.00.6000.16386

NSI.dll NSI User-mode interface DLL Microsoft Corporation 6.00.6000.16386

ntdll.dll NT Layer DLL Microsoft Corporation 6.00.6000.16386

NTMARTA.DLL Windows NT MARTA provider Microsoft Corporation 6.00.6000.16386

ole32.dll Microsoft OLE for Windows Microsoft Corporation 6.00.6000.16386

OLEAUT32.dll Microsoft Corporation 6.00.6000.16386

pnrpnsp.dll PNRP Name Space Provider Microsoft Corporation 6.00.6000.16386

PROPSYS.dll Microsoft Property System Microsoft Corporation 6.00.6000.16386

PSAPI.DLL Process Status Helper Microsoft Corporation 6.00.6000.16386


rasadhlp.dll Remote Access AutoDial Helper Microsoft Corporation 6.00.6000.16386

RPCRT4.dll Remote Procedure Call Runtime Microsoft Corporation 6.00.6000.16525

saHook.dll SiteAdvisor McAfee, Inc. 2.06.0000.6253

SAMLIB.dll SAM Library DLL Microsoft Corporation 6.00.6000.16386

Secur32.dll Security Support Provider Interface Microsoft Corporation 6.00.6000.16386

SETUPAPI.dll Windows Setup API Microsoft Corporation 6.00.6000.16386

SHELL32.dll Windows Shell Common Dll Microsoft Corporation 6.00.6000.16513

SHLWAPI.dll Shell Light-weight Utility Library Microsoft Corporation 6.00.6000.16386

urlmon.dll OLE32 Extensions for Win32 Microsoft Corporation 7.00.6000.16575

USER32.dll Multi-User Windows USER API Client DLL Microsoft Corporation 6.00.6000.16438

USERENV.dll Userenv Microsoft Corporation 6.00.6000.16386

USP10.dll Uniscribe Unicode script processor Microsoft Corporation 1.626.6000.16386


uxtheme.dll Microsoft UxTheme Library Microsoft Corporation 6.00.6000.16386

VERSION.dll Version Checking and File Installation Libraries Microsoft Corporation 6.00.6000.16386

WINNSI.DLL Network Store Information RPC interface Microsoft Corporation 6.00.6000.16386

winrnr.dll LDAP RnR Provider DLL Microsoft Corporation 6.00.6000.16386

WLDAP32.dll Win32 LDAP API DLL Microsoft Corporation 6.00.6000.16386

WS2_32.dll Windows Socket 2.0 32-Bit DLL Microsoft Corporation 6.00.6000.16386

wshtcpip.dll Winsock2 Helper DLL (TL/IPv4) Microsoft Corporation 6.00.6000.16386

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