Slow I/O with LUKS on amd64
Quoted 2 lines · Thomas Damgaard
I have recently switched from i386 to amd64. After switching to 64 bit, I/O on LUKS encrypted devices became horribly slow.
I had the same issue with Ubuntu 10.10. After installing a kernel from the upcoming 11.04, doing a 'time /usr | wc -l' went from 3 minutes to 6 seconds. And yes, I dropped my caches. :)
I installed the following image, BTW:
//launchpadlibrarian.net/65900455/linux-image-2.6.38-6-generic_2.6.38-6.34_amd64.deb
Hanno