At the begining of the test, it was written "Your system appears to be suitable for handling real-time audio and other tasks without dropouts." I don't know if I should make the test when cubase / scope are running.
Anyway, after starting the test, I went to eat something and forgot about it.
I started Cubase to play before to check the results, it was full of crackling ! So I remembered it is LatencyMon test !
(as you can see, I left the test running more than one hour !)
And it gave that result but I really don't know what I could turn off in the power management ! Everything is already off ! And it's the same for the bios. The problem is that I'm not sure if the bad result appeared after I started cubase to play or if it was already detected by LatencyMon.
I tried again the test just for 5 mn then started cubase to see if bad results would come back but they didn't. There was still the same message 'system suitable for real-time audio ... bla bla bla'
Anyway...
Here we go for LatencyMon report :
CONCLUSION
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Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates.
LatencyMon has been analyzing your system for 1:15:58 (h:mm:ss) on all processors.
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SYSTEM INFORMATION
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Computer name: JOPO-VROAR
OS version: Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
Hardware: MS-7817, MSI, H81M-E35 V2 (MS-7817)
CPU: GenuineIntel Intel(R) Core(TM) i5-4590S CPU @ 3.00GHz
Logical processors: 4
Processor groups: 1
RAM: 16068 MB total
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CPU SPEED
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Reported CPU speed: 30 MHz
Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.
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MEASURED INTERRUPT TO USER PROCESS LATENCIES
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The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.
Highest measured interrupt to process latency (µs): 3992,864862
Average measured interrupt to process latency (µs): 1,460855
Highest measured interrupt to DPC latency (µs): 131,411606
Average measured interrupt to DPC latency (µs): 0,485133
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REPORTED ISRs
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Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.
Highest ISR routine execution time (µs): 80,3820
Driver with highest ISR routine execution time: ataport.SYS - ATAPI Driver Extension, Microsoft Corporation
Highest reported total ISR routine time (%): 0,031162
Driver with highest ISR total time: portcls.sys - Port Class (Class Driver for Port/Miniport Devices), Microsoft Corporation
Total time spent in ISRs (%) 0,04490
ISR count (execution time <250 µs): 5654200
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 0
ISR count (execution time 1000-1999 µs): 0
ISR count (execution time 2000-3999 µs): 0
ISR count (execution time >=4000 µs): 0
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REPORTED DPCs
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DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.
Highest DPC routine execution time (µs): 255,6880
Driver with highest DPC routine execution time: USBPORT.SYS - Pilote de port USB 1.1 & 2.0, Microsoft Corporation
Highest reported total DPC routine time (%): 0,104755
Driver with highest DPC total execution time: scopexite.sys - Scope XITE-1 WDM Adapter Driver, Sonic Core
Total time spent in DPCs (%) 0,227280
DPC count (execution time <250 µs): 29375742
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 2
DPC count (execution time 1000-1999 µs): 0
DPC count (execution time 2000-3999 µs): 0
DPC count (execution time >=4000 µs): 0
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REPORTED HARD PAGEFAULTS
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Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.
NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.
Process with highest pagefault count: svchost.exe
Total number of hard pagefaults 10639
Hard pagefault count of hardest hit process: 8868
Highest hard pagefault resolution time (µs): 7535954,9010
Total time spent in hard pagefaults (%): 0,435827
Number of processes hit: 17
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 66,586654
CPU 0 ISR highest execution time (µs): 80,3820
CPU 0 ISR total execution time (s): 8,186228
CPU 0 ISR count: 5654200
CPU 0 DPC highest execution time (µs): 255,6880
CPU 0 DPC total execution time (s): 40,817247
CPU 0 DPC count: 29323679
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CPU 1 Interrupt cycle time (s): 17,081369
CPU 1 ISR highest execution time (µs): 0,0
CPU 1 ISR total execution time (s): 0,0
CPU 1 ISR count: 0
CPU 1 DPC highest execution time (µs): 68,0880
CPU 1 DPC total execution time (s): 0,036465
CPU 1 DPC count: 5066
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CPU 2 Interrupt cycle time (s): 14,602806
CPU 2 ISR highest execution time (µs): 0,0
CPU 2 ISR total execution time (s): 0,0
CPU 2 ISR count: 0
CPU 2 DPC highest execution time (µs): 62,2220
CPU 2 DPC total execution time (s): 0,098716
CPU 2 DPC count: 22350
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CPU 3 Interrupt cycle time (s): 15,077881
CPU 3 ISR highest execution time (µs): 0,0
CPU 3 ISR total execution time (s): 0,0
CPU 3 ISR count: 0
CPU 3 DPC highest execution time (µs): 73,6490
CPU 3 DPC total execution time (s): 0,485380
CPU 3 DPC count: 24649
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