kuvwert
@kuvwert@lemmy.dbzer0.com
- Comment on My NFS timeouts / dirty page writeback problem. 2 weeks ago:
Holy Canoli You were right.
Checked the Synology’s network interface page and it was negotiating at 100 Mbps to my Orbi router. Your comment about 11.4 MB/s lining up with a 100 Mbps ceiling is exactly what got me to actually check the link speed instead of just assuming gigabit.
Bought a cheap unmanaged switch, plugged the NAS and server into it directly, came up at 1000 Mbps, and now I’m getting 107-115 MB/s on the same tests. Updated the post and credited you. Appreciate you pushing back on it.
- Comment on My NFS timeouts / dirty page writeback problem. 3 weeks ago:
You could 1000% percent be right here. I don’t have an education on networking or system ops.
The NAS can sustain gigabit writes without complaint. My premis is the kernel isn’t flushing at wire speed in a steady stream. It hoards 2+ GB in page cache then fires a burst of concurrent NFS RPCs all at once. The NAS can’t ack them fast enough and the client declares it dead.
I ran three dd tests, same 2GB file, same NAS, only changed client config:
- 128K buffers: 101 MB/s, dies at 2GB
- 32K buffers: 2.1 GB/s (all page cache, nothing hitting the wire), dies even harder
- 64MB dirty page cap: steady 11.4 MB/s, zero timeouts, clean finish
The NAS handled all 2GB in test 3 because it arrived as a drip instead of a wall.
At least thats the working theory :)
- Submitted 3 weeks ago to selfhosted@lemmy.world | 9 comments
- Comment on Valheim player keeps building Dollar Generals despite friend begging them to stop: 'I do not want to play Valheim with Greg anymore' 2 months ago:
Ah yes! I saw your mum in poundland last night
(I’m so sorry, it was right there)
- Comment on Any FLOSS alternative's to Ground News? 7 months ago:
Could you share your flow for that? Its sounds awesome
- Comment on PSA: filebrowser is no longer being actively developed 9 months ago:
Ive had some good experience with filestash but recently they swapped to collabora which brought me a host of headaches.
The Dev is awesome though.
- Comment on PSA: filebrowser is no longer being actively developed 9 months ago:
I doubt it, why dont you have sudo?
- Comment on PSA: filebrowser is no longer being actively developed 9 months ago:
github.com/gtsteffaniak/filebrowser
File browser Quantum is the shiny feature rich fork