D:233 GB left out if 1 TB bad?

[savagebeest]

I'm learning about pc's and I just downloaded DCS and it was a big file. I have almost all ww2 planes and maps. 

 

I went back to play il2 (vr) and felt it a bit sluggish in frames. Normally its totally fine few stutters here & there but after this installation of DCS it seems a bit slow. 

 

Can a nearly full ssd cause performance issues? 

 

I7 9700k 

2070 super

16 ram

All ssd

Rift s 

Edited June 21, 2022 by savagebeest

[Skycat1969]

Although this doesn't directly answer your question: I updated to the most current Nvidia drivers last week and it turned my VR experience into a slide show. I then reverted to a May version of the drivers and the game was still unplayable. I downloaded drivers from April and the game was back to normal. So, if you updated your drivers recently that may be the cause of the sluggishness.

 

My specs: i7-9700K, RTX 2080 Ti, Reverb G2 (and sometimes Rift S).

Edited June 21, 2022 by Skycat1969

[cardboard_killer]

7 hours ago, savagebeest said:

Can a nearly full ssd cause performance issues? 

 

Yes, but if you have 233 GB left you are not nearly full. I try to keep 100 GB free for temp and swap files, but I think you're safe to go down to less than 50 GB before running into any trouble.

[AEthelraedUnraed]

30 minutes ago, cardboard_killer said:

I think you're safe to go down to less than 50 GB before running into any trouble.

*Easily*.

 

You should be able to go as low as 10GB or so without noticing a thing (although Windows Updates sometimes requires up to 20GB, and various processes might completely fill up your SSD in the blink of an eye if it's that full, which will lead to problems). SSDs can degrade and break down, but if that's the case, you should expect similar problems in other apps such as DCS.

[Livai]

As long we talk about Game files only fill your SSD as you wish even to 100%. Game Updates overwrite always the same file sector. Read performance never drop, don't worry.

 

When you see bad performance maybe something running in the background cause the issue. Samsung as example had some issue with their Evo - Series maybe you have these troublemakers in your PC.

[jollyjack]

I guess when Normandy and or FC2 comes out the map files will be around 1 GB more maybe.

[savagebeest]

On 6/21/2022 at 2:39 AM, Skycat1969 said:

Although this doesn't directly answer your question: I updated to the most current Nvidia drivers last week and it turned my VR experience into a slide show. I then reverted to a May version of the drivers and the game was still unplayable. I downloaded drivers from April and the game was back to normal. So, if you updated your drivers recently that may be the cause of the sluggishness.

 

My specs: i7-9700K, RTX 2080 Ti, Reverb G2 (and sometimes Rift S).

This has to be it. Because soon as I did an update it was feeling sluggish.  So I will revert and see if it helps. Thank you. 

[AEthelraedUnraed]

20 hours ago, Livai said:

Game Updates overwrite always the same file sector.

That's not true. Even with a HDD, game updates might end up at a different section of the disk if there is not enough concurrent space (or, if the filesystem feels like it for whatever reason, really). In addition to that, SSDs do load balancing so data you write may end up at any empty sector. That's not necessarily at the same sector it was located beforehand, even if you're overwriting files without changing the file size.

[Livai]

interfere

On 6/22/2022 at 5:08 PM, AEthelraedUnraed said:

That's not true. Even with a HDD, game updates might end up at a different section of the disk if there is not enough concurrent space (or, if the filesystem feels like it for whatever reason, really). In addition to that, SSDs do load balancing so data you write may end up at any empty sector. That's not necessarily at the same sector it was located beforehand, even if you're overwriting files without changing the file size.

 

Assume your HDD/SSD is full = 100% and fresh installed - Now assume all Games Updates not go beyond 100%. What you think what each Game Update do on your HDD/SSD - search for the files what need to be overwritten in the sector where these files are stored. As long the Game Update not start to delete things or the Human artificial intelligence not start to delete/move some Game files or delete the whole Game to install something different - Only these cause files to be installed in different sectors criss-cross everywhere and on HDDs you need to defragment to fix this mess for better performance SSD don't care where each piece is stored their read performance never change only their write perfomance goes down when the SSD reach their threshold this is when SSDs reach 75-100% or run out of own Cache or own RAM. Same story for all HDD/SSDs if something in the background interfere performance then HDD still suffer more than SSDs.

 

 

 

 

 

[AEthelraedUnraed]

19 hours ago, Livai said:

Assume your HDD/SSD is full = 100%

Won't ever happen.

 

19 hours ago, Livai said:

What you think what each Game Update do on your HDD/SSD - search for the files what need to be overwritten in the sector where these files are stored.

I know at least three reasons why that's completely incorrect:

- Game updates on Steam don't overwrite any files - they just create new ones and delete the old ones once they've been downloaded.

- Even *if* a game update would "overwrite" a file, if it's on a HDD and the new file is larger than the old one (which tends to happen since updates usually add content), there's no telling if the files end up at the same block. If the next block is already occupied, the entire file will be moved to a new free block (and possibly other files will be moved around as well).

- If it's on an SSD, even if a file is the same size or smaller, wear leveling might make the file end up at a completely different sector.

 

19 hours ago, Livai said:

As long the Game Update not start to delete things or the Human artificial intelligence not start to delete/move some Game files or delete the whole Game to install something different - Only these cause files to be installed in different sectors criss-cross everywhere

Completely wrong. There's tons of reasons why files are moved around and end up in different sectors, see above. On SSDs more so than on HDDs, but it happens on both technologies.

 

19 hours ago, Livai said:

on HDDs you need to defragment to fix this mess for better performance SSD don't care where each piece is stored their read performance never change only their write perfomance goes down when the SSD reach their threshold this is when SSDs reach 75-100% or run out of own Cache or own RAM. Same story for all HDD/SSDs if something in the background interfere performance then HDD still suffer more than SSDs.

This is mostly correct. However, it's good to mention that most SSDs automatically keep 10% or so free (over-provisioning). This free space *does not* show up in Windows, so usually if Windows says your SSD is 90% full, it's actually something like 90%-10%=80% full.

 

Bottom line is, game updates *do not* overwrite the same sector. On a full HDD this may lead to fragmentation, which will slow down the system. On an SSD, fragmentation is not a problem, but a very full SSD requires more write operations to accomplish what it's told to do, which will slow down the system as well (and may also wear down your SSD faster). In either case, 233GB out of 1TB is more than enough and shouldn't lead to any problems whatsoever.