←back to thread

A deep dive into Debian 13 /tmp: What's new, and what to do if you don't like it

(lowendbox.com)
150 points shaunpud | 1 comments | 29 Aug 25 02:39 UTC | HN request time: 0.202s | source
Show context
fh973 ◴[29 Aug 25 05:37 UTC] No.45060597[source]▶
Swap on servers somewhat defeats the purpose of ECC memory: your program state is now subject to complex IO path that is not end-to-end checksum protected. Also you get unpredictable performance.

So typically: swap off on servers. Do they have a server story?

replies(6): >>45060665 #>>45060768 #>>45062143 #>>45062478 #>>45062741 #>>45110791 #
abrookewood ◴[29 Aug 25 05:50 UTC] No.45060665[source]▶
That's a really good point that had never occurred to me.

Edit: I think that the use of ZFS for your /tmp would solve this. You get Error Corrected memory writing to an check-summed file system.

replies(1): >>45060900 #
yjftsjthsd-h ◴[29 Aug 25 06:34 UTC] No.45060900[source]▶
ZFS /tmp is probably fine, but swapping to ZFS on Linux is dicey AIUI; there's an unfortunate possibility of deadlock https://github.com/openzfs/zfs/issues/7734
replies(2): >>45061284 #>>45061712 #
1. abrookewood ◴[29 Aug 25 07:39 UTC] No.45061284[source]▶
Ah, thanks for pointing that out - wasn't aware.