791 reputation
36
bio website pvv.ntnu.no/~kjetijor
location Trondheim, Norway
age 36
visits member for 3 years, 11 months
seen Nov 10 at 19:35

Nov
5
comment Calls to sync/fsync slow down after 30 minutes uptime
Adding the gist of my comment as an answer.
Nov
5
answered Calls to sync/fsync slow down after 30 minutes uptime
Nov
5
comment Calls to sync/fsync slow down after 30 minutes uptime
smartctl -c, is the drive running some of it's self-tests ? I don't recall the specifics, but many years ago some friends of mine tracked down a periodically occurring slowdown of our storage servers to the drives running selftests at that time monopolizing io.
Dec
16
awarded  Yearling
Dec
11
awarded  Nice Answer
Oct
8
awarded  Nice Answer
Sep
5
comment Static files give ever changing checksum value on Linux
I'm still not entirely sold on this not being caused by an userspace program rather than kernel-bug/faulty hardware. For faulty hardware, given that this is tmpfs, you'd be seeing either memory corruption, or in-flight corruption, which memtest should have caught, I'd also have expected kernel oopses if memory is randomly mangled(It'd be weird if it's isolated only to bodies of files on tmpfs) Unless you've already tried, I'd suggest looking into inotify, and have inotify watches on the files watching for modifications, when you see the files change, and lsof for seeing if the files are opened
Dec
16
awarded  Yearling
Dec
16
awarded  Yearling
Jul
19
revised Sync writes very slow. Ubuntu 10.10, 32 bits, ext4
Oops, fixed misspelled word.
May
22
answered Reducing packet loss in tc rate limiting
May
9
answered Unpredictable memory explosions
Apr
8
comment Is it possible to find the path of a running program?
(deleted my comment as it no longer applied after your edit:)
Apr
8
answered Where do files go when the rm command is issued?
Mar
3
awarded  Critic
Feb
26
comment Add latency when accessing certain websites under linux
You should also be able to use the u32 classifier to tc filter instead of iptables.
Feb
8
answered grep acting strangely
Feb
1
revised How to clean up file extensions?
added note about replacing prename as appropriate
Feb
1
revised How to clean up file extensions?
Removed leftovers of what should have been removed in a previous edit
Feb
1
answered How to clean up file extensions?