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[BufferPools] PoolSize=0 the holy grail of FSX performance...

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Before I start reading through 10 pages of this post, could someone summarize what it is all about? I basically tried BP=0 and it has some impact on my system, everything seems smoother. Though I can't say for sure if it's better indeed, because I think I have memory problems through it... still in testing.

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Before I start reading through 10 pages of this post, could someone summarize what it is all about? I basically tried BP=0 and it has some impact on my system, everything seems smoother. Though I can't say for sure if it's better indeed, because I think I have memory problems through it... still in testing.
Lol! :--))Hi Word Not Allowed,I am afraid no one is really able to summarize this thread.That's why it's already a 17 pages one and if I can make a prediction, we are far from the end!One of the nicest, interesting and funniest thread we had for months! :(

- PC Hardware: AMD Ryzen 9 9950X3D //  Asus ROG Crosshair X870E HERO //  2x32Gb Corsair Dominator Titanium DDR5 6000MT/s CL30 //  ASUS ROG Strix GeForce RTX 4090 OC Edition // 4Tb Corsair NVMe M.2 MP600  //  Corsair 1600W PSU
Samsung Odyssey Arc 55" curved 165 Hz monitor.
- Simulator Hardware: VIRPIL Constellation Alpha Prime + VIRPIL VPC Universal Control Panel - #3 + MOZA AY210 Force Feedback Yoke + WINWING URSA MINOR 32 Throttle & PAC Metal + WINWING SKYWALKER Metal Rudder Pedals + WINWING Airbus FCU & EFIS + WINWING Boeing 3N PAP + WINWING MCDU-32 + WINWING PFP-4 + WINWING PFP 3-N + WINWING PFP-7. 

   

 

 

Lol! :--))Hi Word Not Allowed,I am afraid no one is really able to summarize this thread.That's why it's already a 17 pages one and if I can make a prediction, we are far from the end!One of the nicest, interesting and funniest thread we had for months! :(
Hahaha, well, was worth the try :( But, interesting thing happened now, something I read on some page of this thread: graphical corruption with heavy scenery, resulting pixels all around and only reboot repaired it. Now removed it and testing.
Lol! :--))Hi Word Not Allowed,I am afraid no one is really able to summarize this thread.That's why it's already a 17 pages one and if I can make a prediction, we are far from the end!One of the nicest, interesting and funniest thread we had for months! :(
----------------------------------------------------------------------David, for myself, this was such clear-cut 'out of the box' WORKING tweak that boosted my FPS by 10, and made for the smoothest animation ever. Caveat though....after about a half hour, all hell broke loose! Snow showers of white dots, texture tears...nothing to do but to end the FSX session, and even REBOOT the computer to get rid of the bogie's. Does it work? Yes! If I had a 2 GB card..I'd have it there to stay. But..in place of that (1 GB GTX285) I have gone back to BUFF at 500000, and with the very slightest of stutter here and there, but no more bogie's. You do what you have to do, lol. This tweak was genuine, if you could pull it off....Mitch
----------------------------------------------------------------------David, for myself, this was such clear-cut 'out of the box' WORKING tweak that boosted my FPS by 10, and made for the smoothest animation ever. Caveat though....after about a half hour, all hell broke loose! Snow showers of white dots, texture tears...nothing to do but to end the FSX session, and even REBOOT the computer to get rid of the bogie's. Does it work? Yes! If I had a 2 GB card..I'd have it there to stay. But..in place of that (1 GB GTX285) I have gone back to BUFF at 500000, and with the very slightest of stutter here and there, but no more bogie's. You do what you have to do, lol. This tweak was genuine, if you could pull it off....Mitch
Mitch,I have a 2 Gb card and unfortunately get the same artefacts.It's not yet the holy grail but it's positively a good tweak and I hope we'll find "the" way to get rid of the bogie's :--)

- PC Hardware: AMD Ryzen 9 9950X3D //  Asus ROG Crosshair X870E HERO //  2x32Gb Corsair Dominator Titanium DDR5 6000MT/s CL30 //  ASUS ROG Strix GeForce RTX 4090 OC Edition // 4Tb Corsair NVMe M.2 MP600  //  Corsair 1600W PSU
Samsung Odyssey Arc 55" curved 165 Hz monitor.
- Simulator Hardware: VIRPIL Constellation Alpha Prime + VIRPIL VPC Universal Control Panel - #3 + MOZA AY210 Force Feedback Yoke + WINWING URSA MINOR 32 Throttle & PAC Metal + WINWING SKYWALKER Metal Rudder Pedals + WINWING Airbus FCU & EFIS + WINWING Boeing 3N PAP + WINWING MCDU-32 + WINWING PFP-4 + WINWING PFP 3-N + WINWING PFP-7. 

   

 

 

----------------------------------------------------------------------David, for myself, this was such clear-cut 'out of the box' WORKING tweak that boosted my FPS by 10, and made for the smoothest animation ever. Caveat though....after about a half hour, all hell broke loose! Snow showers of white dots, texture tears...nothing to do but to end the FSX session, and even REBOOT the computer to get rid of the bogie's. Does it work? Yes! If I had a 2 GB card..I'd have it there to stay. But..in place of that (1 GB GTX285) I have gone back to BUFF at 500000, and with the very slightest of stutter here and there, but no more bogie's. You do what you have to do, lol. This tweak was genuine, if you could pull it off....Mitch
Mitch, Bless your cotton-pickin heart! You are right, you are absolutely right!I tried the 500000 and have, as far as I can tell all the benefits of Bufferpools=0 without any artifacts, jumps, pulls, coughs, flashes, burbs or chugs. Absolutely perfect. I just took off from Darrington Washington with the autogen settings at very dense and my fps hardly ever dipped below 24. It was like running a movie on the VCR. You and Bojote are both geniuses. How did you come up with this? OK, OK, I know that it won't work for everybody, but I don't know why not. Here is what I have, and what I have done:Q9550 OC'd to 3.65ghz4g 1066 ramEVGA GTX275, 1792 ram, OC'd to 721mhzWindows 64 Home PremiumFPS Limiter set to 24fps185.50 driverSliders maxed out except autogen back 1 notch.CFG changesBufferpools at 500000TEXTURE_BANDWIDTH_MULT=60AffinityMask=15TERRAIN_MAX_AUTOGEN_TREES_PER_CELL=800TERRAIN_MAX_AUTOGEN_BUILDINGS_PER_CELL=800(The CFG autogen settings allows nearly full buildings in rural areas and towns with somewhat fewer trees, and still allows fluid performance in cities without altering autogen sliders set at very dense.Nhancer settings: As per Nicks Needham's recommendations except:Anti-Aliasing set at 16xsTexture filtering at High PerformanceLook at these:There are still lots of trees:1267935695.jpgVery Dense Setting1267911094.jpgDarrington1267848197.jpgI suppose more testing is in order to see if I can run for several hours without a crash or whatever, but so far, this is the best I have seen. Fast fun and fluid. Thank you Bojote and Mitch, ...and John, and Nick, and Dick, and Spot, and Jane...
Mitch, Bless your cotton-pickin heart! You are right, you are absolutely right![/I tried the 500000 and have, as far as I can tell all the benefits of Bufferpools=0 without any artifacts, jumps, pulls, coughs, flashes, burbs or chugs. Absolutely perfect. I just took off from Darrington Washington with the autogen settings at very dense and my fps never dipped below 24. It was like running a movie on the VCR. You and Bojote are both geniuses. How did you come up with this? OK, OK, I know that it won't work for everybody, but I don't know why not. Here is what I have, and what I have done:--------------------------------------------------------------------Well....I just luv'd what BUFF=0 did for the whole experience. I just couldn't stay with it. There is no such THING as 'never' or 'no' in my vocabulary, lol. So....I just kept tweaking numbers, playing around, taking flights, observing cause and effect and found that BUFF=500000 (five zeroes) gave me about 98-99 % of the benefits of having BUFFER POOLS set to '0'.I just came back from a flight from Victoria, B.C. to Portland, OR. with AS 6.5, REX2, AI Smooth all running, and had 28-30 FPS all the way with no crashes, VERY, VERY slight micro-stutter occasionally (very livable with) and great graphic animation and clarity. For my GTX285 1 GB, I've locked in BUFF at 500000 to stay. :) I'm glad it worked out for you, too!Mitch
I suppose more testing is in order to see if I can run for several hours without a crash or whatever, but so far, this is the best I have seen. Fast fun and fluid. Thank you Bojote and Mitch, ...and John, and Nick, and Dick, and Spot, and Jane...
I have been using between 500000 and 1mb and on my last flight from KORD to KJFK in the PMDG 744 by the time I got to KJFK the bottom had dropped out of the fuselage! Made for a nice view! I had an old chevy II once that the floor rusted out on, reminded me of that! May also be related to the 196.21 driver as I never had that happen in the past. But it's only with that particular bird. All my other addons work gr8 with the 500000-1000000 BP settings. I don't see any diff between 500000 and 1000000 either. Both work really well, and the best when using DPC latency checker.Noel

Noel

System:  9900X3D Noctua NH-D15 G2, MSI Pro 650-P WiFi, G.SKILL  64GB (2 x 32GB) 288-Pin PC RAM DDR5 6000, WD NVMe 2Tb x 1, Sabrent NVMe 2Tb x 1, RTX 4090 FE, Corsair RM1000W PSU, Win11 Home, LG Ultra Curved Gsync Ultimate 3440x1440, Phanteks Enthoo Pro Case, TCA Boeing Edition Yoke & TQ, Cessna Trim Wheel, RTSS Framerate Limiter w/ Front Edge Sync.

Aircraft used in MSFS 2024:  Fenix A320,  Aerosoft CRJ, FBW, WT 787X, I-Fly 737 MAX 8, Citation Longitude.

 

Confirming. BP=500000 (5 zeroes) is working very similar to 0, but without corruption. At least so far I tested, for half an hour or so...How should this DPC Latency Checker be used? I ran it for a while, only had little green bars...

Confirming. BP=500000 (5 zeroes) is working very similar to 0, but without corruption. At least so far I tested, for half an hour or so...How should this DPC Latency Checker be used? I ran it for a while, only had little green bars...
I think you have outgrown DPC Latency Checker with your i970 @ 4.2Ghz. That is for folks like me with old clunker CPUs :( When I run DPC a BP at over 5,000,000 or more, I get the odd yellow spike. At 500,000-1,000,000 I get little green bars too.

Noel

System:  9900X3D Noctua NH-D15 G2, MSI Pro 650-P WiFi, G.SKILL  64GB (2 x 32GB) 288-Pin PC RAM DDR5 6000, WD NVMe 2Tb x 1, Sabrent NVMe 2Tb x 1, RTX 4090 FE, Corsair RM1000W PSU, Win11 Home, LG Ultra Curved Gsync Ultimate 3440x1440, Phanteks Enthoo Pro Case, TCA Boeing Edition Yoke & TQ, Cessna Trim Wheel, RTSS Framerate Limiter w/ Front Edge Sync.

Aircraft used in MSFS 2024:  Fenix A320,  Aerosoft CRJ, FBW, WT 787X, I-Fly 737 MAX 8, Citation Longitude.

 

I just went back to WinXP 64 on my FSX machine after reading this from NickN"I use WindowsXP x64 for FSX.. no muss, no fuss, no crazy strange sound reductions to offset payware texture issues and black screens, no affinity mask in use or BP settings that would be out of range, in other words.. no hoops to jump thorugh and ladders to climb"Then put in the BP=0 and my jaw hit the floor, all the artifacts were gone no flashes or spike, no more snowy images, it's a little too early to tell as I am just finishing the install tonight, but so far it is a dream. I set all(x/c car and boat traffic and mid water shader 2x) the sliders to max and was pulling 30 fps over FTX friday harbor in the default P51 racer with Orbx weather "bush flyers lucky dip" with 1024 REX clouds.I have to do more testing as I am just at the end of the bulk of the install, but so far I am thrilled. I actually have to fly a real plane tomorrow(training for my checkride), but Sunday night i'll try to get some screen shots up...

I think you have outgrown DPC Latency Checker with your i970 @ 4.2Ghz. That is for folks like me with old clunker CPUs :( When I run DPC a BP at over 5,000,000 or more, I get the odd yellow spike. At 500,000-1,000,000 I get little green bars too.
Noel,The DPC Latency Checker Tool is a valid tool to use no matter what processor you are running. All it takes to screw up the latency is a poor performing addon card, driver, or on board hardware. When you find you do have high latency you can use the tool to isolate the offending hardware/driver. One of the biggest culprits I have found to date that contribute to latency spikes is wireless networking.

I've tried the various tips but still get artifacts with BP at 0. However... there is something weird going on... I can't put my finger on it though. The thing is, while I was testing yesterday I SUDDENLY was able to fly above Darrington with no artifacts at ALL and with Extremele dense autogen... The flight was smooth and perfect: whenever I use 500000 and Extremely dense autogen I do get a lot of stutters. For a very short while I thought I found 'it' (the specific settings I used for compatibilty, TBM, etc. etc. etc.) but no... when I came back later, I got artifacts all over again.I just do not understand why I was able to perfem a perfect flight...! This happened twice btw!Another thing that keeps me thinking about what's going on: I once had terrible artifacts and I switched ti windowed mode... All artifacts were gone! I could fly perfectly well, although unfortunately vsync didn't work. However, also this didn't work everytime...There seems to be something going on at random... As if it matters if specific ram (hardware) of my GTX280 is adressed: some of the ram gives me artifact, some not: that idea. It's weird. And frustrating, because with Darrington and Stark's I can see an amazing difference in performance between 0 and 500000 for the first time!!!

Confirming. BP=500000 (5 zeroes) is working very similar to 0, but without corruption.
What is a bit odd is how far the results, or I should say the settings swing in these latest post.If just leave the Buffer_Pools line out, it reverts to default.FSX-SP2 default is BP=4000000 (4mb)The OP theorized that BP=0 is that BP (" bytes we will allocate for one pool of vertex and index buffers to store geometry"-Aces)is is now unlimited and now handed off at driver level instead of FSX being in charge.But these latest threads are swinging from BP=0 ("unlimited" -OP) to just BP=500000 (just 1/2-MB) = near the same performance as BP=unlimited and better than 4mb default? Are you guys all rebooting your machines between testing to clear memory caches or just re-starting FSX before you test for results, cause this is a bit odd dont you think? I have mixed feeling about leaving any suggested settings since I have already spoken my mind on testing methodology (Thanks Elrond!) and these settings and just leave this observation for everyone to ponder (or not).But since for reference.....From Aces Team member Rafael Cintron:"In RTM, the default setting was 1MB (1000000). The lower this number, the more pools the allocator will have to rummage through to find space for buffers and the more stutters you may have. In Sp1, we raised the default to 4MB (4000000) and optimized the underlying algorithm for finding free buffers"Aces PT: "So be careful here, making this smaller can hurt you, since searching for space takes time and can cause stutters, and making the number too large can waste space. 4-10m is probably the range to be thinking about using unless you have a very high memory graphics card ( >512 )"-------End of Quote ---------I think this suggest that if indeed BP=0=Unlimitted, that swinging in the opposit direction of just 1/2mb is probably not what you want to do. Perhaps go the other way, maybe a bit less than unlimited, maybe thats 100mb (100000000) or even 200mb for your system (I used 400mb for a while myself). Might then again as default is 4mb it might be best to just start conservative and go with 10mb or 20mb depending on hardware etc and rebooting between test.Edited to hopefully help make it clear to others:This IS NOT about the relavance of BP=0 on YOUR system rather about questionable results based on what is being reported if you look at the numbers and do the math (possible improper testing or reporting?).Paul
One of the biggest culprits I have found to date that contribute to latency spikes is wireless networking.
Yes, I'm familiar with its purpose. I just notice people with the highest end systems don't seem to have issues with latency. Are you saying DPCalls relating wireless networking in FSX are impacting FSX performance? Would that be in picking up weather updates? Otherwise, I'm not sure how that would come into play for FSX.

Noel

System:  9900X3D Noctua NH-D15 G2, MSI Pro 650-P WiFi, G.SKILL  64GB (2 x 32GB) 288-Pin PC RAM DDR5 6000, WD NVMe 2Tb x 1, Sabrent NVMe 2Tb x 1, RTX 4090 FE, Corsair RM1000W PSU, Win11 Home, LG Ultra Curved Gsync Ultimate 3440x1440, Phanteks Enthoo Pro Case, TCA Boeing Edition Yoke & TQ, Cessna Trim Wheel, RTSS Framerate Limiter w/ Front Edge Sync.

Aircraft used in MSFS 2024:  Fenix A320,  Aerosoft CRJ, FBW, WT 787X, I-Fly 737 MAX 8, Citation Longitude.

 

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