Just something which is probably obvious to other users but just putting this out there that my pi still hangs with vm.min_free_kbytes = 8192
I've been using raspbian for ~9 days now. The first ~5 days typically caused the pi to hang once a day after it has a decent amount of uptime going. The past ~4 days consecutive uptime have been trouble free with doubling the setting eg: vm.min_free_kbytes = 16,384.
I suppose my questions though are:
1. I didn't get any errors in messages/syslog, is that normal or could it be to do with rootfs on usb hdd? My first suspicion was power for this reason.
2. Any idea of the maths behind this, I'd guess not because of some large variables?
Here's some information for the curious on how I was overloading it with just a 10mbit internet connection:
Raspbian "Pisces" R2
Headless with 224/32 split, rpi-update(d)
1gb swap partition on usb hdd
~4gb rootfs partition on usb hdd
~140gb partition as samba share on usb hdd
Only added a few 24/7 items:
ZNC, Sick Beard (uses about constant ~40mb)
SABnzbdplus configured to use 5 connections (not SSL currently)
and two further connections on a backup server.
SABnzbdplus is the culprit and it is a python usenet client with a simple http frontend. It has no real problem maxing my 10mbit at 1.2mb/s even when it is unraring a download at the same time. I never had any issues at 100mbit transfers over lan but I guess the nature of usenet binary article downloads is a pretty big factor here.