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Author Topic: Question About Process Priority  (Read 21590 times)
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edward
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« Reply #15 on: August 15, 2007, 10:15:33 am »

Why do you set the Player Priority to Below Normal?

I did it just for the sake of experiment and because Peter said:
"But in either case the priority of the Player could degrade the Audio Engine. So actually the prio of the Player should be as low as possible" (look in the 4th post down on this thread)
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Home built PC (Zalman TNN-300 Silent Case = Intel E2160 - Dual Core 1.8GHz) => Vista (Home Premium) => RAMDisk => M-Audio Audiophile USB (AK4528 DAC) Latency 128 =>

April 19, 2008
0.9u-14a (Double, No Invert, Mem Unchecked, Volume -24dB ** Q1 = -1 ** Player Priority=Low ** Thread Priority=Realtime ** Core Appointment Scheme-1 ** Unattended)
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« Reply #16 on: August 15, 2007, 07:01:54 pm »

Why do you set the Player Priority to Below Normal?

I did it just for the sake of experiment and because Peter said:
"But in either case the priority of the Player could degrade the Audio Engine. So actually the prio of the Player should be as low as possible" (look in the 4th post down on this thread)



Ok reread it; thanks for pointing it out again. 

From PeterSt:
"So actually the prio of the Player should be as low as possible (like shutting off other services to gain on quality), until it can't do its job in time (which would be preparing tracks, and even timing things)."

For me, since most of my music is still a huge single wav file of the album, "preparing tracks" isn't an issue... I wonder what he means by "timing things"... I'm guessing getting the next track ready on time?  Anyway I'm going to try this below normal too or at least go back to normal.

Going back and forth with Thread Priority between High and Realtime (very limited time playing with that and no formal subjective testing yet) I think I might prefer High over Realtime..., but I'll take more time checking that out.

Thanks, Dave
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0.9z-8-3a WAV/CUE files on HDDs via MB FW400>; Win7 pro ttp://www.phasure.com/index.php?topic=352.msg4021#msg4021); [XXHighEnd player  Qs 7, 0, 0, 0, 0; eng 4; adaptive; scheme#3; player priority low; thread priority realtime; clock res 5ms: SFS 420 Wink dac is 24/192 w/32bits; Play Unattended; Stop Services ticked; Wallpaper & Show Back ticked - Mirror Image unticked; Start Engine unticked;garbage collect ticked; copy files to XX-drive; *quad arc prediction upsampling*: straight contiguous:>PCI FW800 card>Fireface 800 DAC [latency 2048 samples for 176.4]; usb/ethernet/mb audio shut off @ MB
PeterSt
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« Reply #17 on: November 16, 2007, 06:38:32 pm »

FYI :

When I try to change to realtime (no matter what program) Vista tells me it is not allowed. "Set to High instead".

I just found that when you are not allowed (Vista) to give a process Realtime Priority, this is caused by not having Uplevelled Administrator Rights (i.e. disable UAC).
Also see Vista Users ... prepare yourselves ..., "Third thing".

Peter
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For the Stealth III LPS PC :
W10-14393.0 - July 17, 2021 (2.11)
XXHighEnd Mach III Stealth LPS PC -> Xeon Scalable 14/28 core with Hyperthreading On (set to 14/28 cores in BIOS and set to 10/20 cores via Boot Menu) @~660MHz, 48GB, Windows 10 Pro 64 bit build 14393.0 from RAM, music on LAN / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 14/-/0/0/*1*/ Q1Factor = *4* / Dev.Buffer = 4096 / ClockRes = *10ms* / Memory = Straight Contiguous / Include Garbage Collect / SFS = *10.13*  (max 10.13) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = Core 3-5 / Not Switch Processors during Playback = Off/ Playback Drive none (see OS from RAM) / UnAttended (Just Start) / Always Copy to XX Drive (see OS from RAM) / Stop Desktop, Remaining, WASAPI and W10 services / Use Remote Desktop / Keep LAN - Not Persist / WallPaper On / OSD Off (!) / Running Time Off / Minimize OS / XTweaks : Balanced Load = *62* / Nervous Rate = *1* / Cool when Idle = n.a / Provide Stable Power = 1 / Utilize Cores always = 1 / Time Performance Index = Optimal / Time Stability = Stable / Custom Filtering *Low* (16x) / Always Clear Proxy before Playback = On -> USB3 from MoBo -> Lush^3
A: W-Y-R-G, B: *W-G* USB 1m00 -> Phisolator 24/768 Phasure NOS1a/G3 75B (BNC Out) async USB DAC, Driver v1.0.4b (16ms) -> B'ASS Current Amplifier -> Blaxius*^2.5* A:B-G, B:B-G Interlink -> Orelo MKII Active Open Baffle Horn Speakers. ET^2 Ethernet from Mach III to Music Server PC (RDC Control).
Removed Switching Supplies from everywhere (also from the PC).

For a general PC :
W10-10586.0 - May 2016 (2.05+)
*XXHighEnd PC -> I7 3930k with Hyperthreading On (12 cores)* @~500MHz, 16GB, Windows 10 Pro 64 bit build 10586.0 from RAM, music on LAN / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 14/-/1/1/1 / Q1Factor = 1 / Dev.Buffer = 4096 / ClockRes = 1ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = 0.10  (max 60) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = Core 3-5 / Not Switch Processors during Playback = Off/ Playback Drive none (see OS from RAM) / UnAttended (Just Start) / Always Copy to XX Drive (see OS from RAM) / All Services Off / Keep LAN - Not Persist / WallPaper On / OSD On / Running Time Off / Minimize OS / XTweaks : Balanced Load = *43* / Nervous Rate = 1 / Cool when Idle = 1 / Provide Stable Power = 1 / Utilize Cores always = 1 / Time Performance Index = *Optimal* / Time Stability = *Stable* / Custom Filter *Low* 705600 / -> USB3 *from MoBo* -> Clairixa USB 15cm -> Intona Isolator -> Clairixa USB 1m80 -> 24/768 Phasure NOS1a 75B (BNC Out) async USB DAC, Driver v1.0.4b (4ms) -> Blaxius BNC interlink *-> B'ASS Current Amplifier /w Level4 -> Blaxius Interlink* -> Orelo MKII Active Open Baffle Horn Speakers.
Removed Switching Supplies from everywhere.

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