KSP.exe severe I/O Writes and excessive CSRSS.exe I/O Reads

[Gkirmathal]

Hey there community.

I have been having an odd issue while playing KSP since I got it and never had this issue before I had KSP installed.

Don't know whether it is mod related or not, or if it is an Unity4.x limit, as I have not found any info about my issue here on the forums.

So that's why I post here.

The problem.

After KSP runs for more than 30 minutes, I start noticing that my system has instances in which it becomes less responsive, these instances show very high disk activity.

Having a dual screen setup and I run a browser on my second monitor which also started to lag significantly when these instances happened.

Ran Task Manager (standard practice) to see what is going on I/O wise after some ingame time.

Results were processes: KSP.exe and CSRSS.exe, had I/O Writes and Reads counts that went through the 1 to 3+ million mark.

Every time high disk activity occurred, were after scene changes and or when 'alt-tab' to look something up/mod some cfg's.

My system:

W7 x64

Intel X5460 @3.8

6Gb ram

6Gb swap partition on a different drive from OS + game partitions.

Ram with KSP + FF + system still has 1.5Gb free, but swap seems to have increased to it's max size.

Has anyone ever ran into something similar, or can anyone perhaps corroborate this??

Thanks

Edit: I am just about to end another session, ksp is at 3.3Gb, now ~1.5 hours in and KSP.exe I/O Writes count stand at 14.97M counts and CSRSS.exe at 2.16M counts. FF is slow and somewhat unresponsive in browsing.

Edited February 2, 2015 by Gkirmathal

[Bilfr3d]

This is most likely due to KSP's memory leak - over time KSP begins uses more and more memory. This is most likely having an impact on your disks as Windows is continually using your swap because of this excessive memory usage. This is also why it only happens after quite a period of time, as KSP only gets bloated enough from it's memory leak after a while. I could explain it more if you wish, but in ways of fixing this there is not much that can be done apart from purchasing more RAM or removing some mods.

Cheers,

[Gkirmathal]

Thanks for the feedback TotheMun. Already thought that could've been the root cause and I was merely describing its symptom I guess. Not found a post describing this symptom though.

Btw, someone an other thread (memory leak I thought) wrote even his Linux x64 system came to a crawl, after KSP had flooded his 16Gb ram and fully filled his swap.

It worries me so many users reporting these several memory management issues and I have read nothing about any technical, engine related, developments in the Dev Blogs.

[lodestar]

I decided to simply disable swap while playing KSP on linux. I prefer to get an OOM kill instead of getting the whole system unresponsive when memory gets full and the system swaps like crazy.