insanecorp Posted December 17, 2013 Share Posted December 17, 2013 I'm on Windows 8.1 Enterprise right now.And I having hight CPU load last 2 days by svchost.How could I discover what exactly uses CPU? Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted December 17, 2013 Share Posted December 17, 2013 install the WPT and run the xperf commands from this topic:http://www.msfn.org/board/index.php?showtopic=140264 Link to comment Share on other sites More sharing options...
insanecorp Posted December 18, 2013 Author Share Posted December 18, 2013 I didn't found 'CPU sampling per CPU' graph, but I found that Windows Driver Foundation service is handling about 30% permanently, and sometimes grows up to 60%. Link to comment Share on other sites More sharing options...
insanecorp Posted December 18, 2013 Author Share Posted December 18, 2013 I have uploaded collected xperf dump to db: https://dl.dropboxusercontent.com/u/46058969/latency.etlMaybe you could find something. Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted December 18, 2013 Share Posted December 18, 2013 the svchost.exe CPU usage comes from Superfetch.But the main issue, is the sdclt.exe which is started and stopped very often. This is a know bug in 8.1. Open the task scheduler go to WindwosBackup and DISABLE the "ConfigNotitfication" Task Link to comment Share on other sites More sharing options...
insanecorp Posted December 18, 2013 Author Share Posted December 18, 2013 Ok, I will disable this task, and also I'm thinking about disabling Superfetsh - my system is installed on Intel SSD and as I remember Intel recomended to disable Superfetch with their SSD, or I should not?Another thing I'm thinking about: Windows Driver Foundation. That is what ProcessExplorer shows mostly all the time: http://take.ms/yz9RM Link to comment Share on other sites More sharing options...
helmutcheese Posted December 19, 2013 Share Posted December 19, 2013 (edited) That is a myth due to peeps claiming it can wear out a SSD.System memory is still far faster than any SSD and unused Memory is wasted so why not use it added to the fact caching only reads from the HDD/SSD not writes and SSD's do not wear from reads only writes.Even the 1st DDR memory from 2001 is faster than 99% of todays SSD's at 2100MB/s for DDR266 (PC2100).Windows 7SP1 (AFAIR) onwards does not disable SuperFetch at install on detection of a SSD (or at least never did for me) I think before SP1 it did but never had a SDD then and I always install from a Win 7 SP1 image on my SSD.Windows Driver Foundation uses my CPU a lot taking the CPU out of 1600MHZ idle mode up to 5GHZ. Edited December 19, 2013 by helmutcheese Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted December 19, 2013 Share Posted December 19, 2013 disable the task and capture a new trace if you still have issues. Link to comment Share on other sites More sharing options...
BlackShads Posted January 22, 2014 Share Posted January 22, 2014 Hi Andre! Today I was playing a game via Steam, and suddenly my frame dropped to 10. I opened up task manager, and sure enough, svchost.exe was eating up my RAM and CPU. I clicked search online and came across the thread on Microsoft, clicked on your profile, and that directed me here. Anywho, I followed the instructions and uploaded the highCPUUsage.etl to dropbox ( https://www.dropbox.com/s/izl1t2qegjawzrr/highCPUUsage.7z ). Upon restart, I opened up task manager again, and svchost.exe was eating 100% of my disk as well. Could you please help me resolve this? Thanks! Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted January 22, 2014 Share Posted January 22, 2014 the trace is corrupted. Don't run other tools like ProcessExplorer, TaskManager, LatencyMon or Resource Monitor the same time. Link to comment Share on other sites More sharing options...
BlackShads Posted January 22, 2014 Share Posted January 22, 2014 (edited) How about this one? https://www.dropbox.com/s/izl1t2qegjawzrr/highCPUUsage.7zIt wasn't really using a ton of resources when I took this one, though. It goes on and off like a light. :>If you need, I'll take another when it is. Edited January 22, 2014 by BlackShads Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted January 22, 2014 Share Posted January 22, 2014 this trace is fine. CPU is idle for 99%. Capture the trace when you have the issue. Link to comment Share on other sites More sharing options...
lshv Posted January 28, 2014 Share Posted January 28, 2014 Please would you mind looking at my etl? Thanks a lot for your help!https://drive.google.com/file/d/0B3HuZtfFCl1Ubm5IS1MxYmJKVmc/edit?usp=sharing Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted January 28, 2014 Share Posted January 28, 2014 you also have the sdclt.exe bug. Link to comment Share on other sites More sharing options...
lshv Posted January 28, 2014 Share Posted January 28, 2014 Thanks a lot Andre, CPU down to 5% - fantastic you're a lifesaver. Link to comment Share on other sites More sharing options...
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