I recently installed Debian Squeeze on a new TS-419P+, and it ran nicely. So, to make it more interesting, I upgraded to Wheeze, and now I'm seeing a performance/responsiveness regression whose cause I can't quite figure out.
This has following symptoms: - Big-file dd with large block size (over 16 kiB or so, but especially like 1 MiB), from both RAID-5 backed files and bare disks performs much slower (30-60%!) than before. - dd with small blocks (4 kiB would seem to be close to sweet spot) performs roughly as expected, but slightly slower when served from RAID-5 (maybe 25% difference at most). - SSH and even serial console interaction on other shells feels much choppier than it used to be according to my memory with Squeeze while I was doing these benchmarks. - System is fine without this disk activity (I didn't try if network activity would have a similar effect, but just busylooping processes cause no trouble). Do you have a chance to try this on Kirkwood system, preferably with Marvell 6282, not 6281? Somehow I'm feeling that linux-image-3.0.0-1-kirkwood kernel is missing interrupts, or something. There is no indication of this on dmesg, though. -kirma -- To UNSUBSCRIBE, email to debian-arm-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CACJDtkirvjcG9dp9q-+F9U=13jkh1ws2-7j0vgfgcqs5tth...@mail.gmail.com
