On Tue, 2011-05-31 at 18:37 +0200, SirJective wrote: > Package: linux-2.6 > Version: 2.6.38-2 > Severity: important > > > I'm using swap space on an LVM volume on a LUKS-encrypted partition. > Swapping is ridiculously slow (< 1MB/s) whenever I swap to either the encrypted > swap partition, or some file inside an encrypted partition. > It is reasonably fast when swapping to a file on an unencrypted partition. > > Normal writes (file copying, dd if=/dev/zero, etc) to the encrypted partition are > reasonably fast (~30MB/s), so the CPU overhead caused by encryption > cannot account for this. Please run 'top -b -d 1 -n 10' while this is happening and send the output. > [I posted a similar bug for 2.6.32 to the linux-image-*-686 package in squeeze, which > was probably a bad idea, so I'm posting this to the linux-2.6 source package, > where all the other bugs are posted.] That should not be necessary; reportbug should assign the bug to 'linux-2.6' anyway. What was the other bug number? Also, is it correct that this bug is present in both the 'squeeze' kernel (version 2.6.32-34squeeze1) and version 2.6.38-2? Is it fixed in version 2.6.39-1 (currently in sid)? > The real-world impact is that, for example, when I open a huge image in iceweasel > with other stuff already open in the background, the system virtually freezes > up for 15 minutes or more. Ben. -- Ben Hutchings Once a job is fouled up, anything done to improve it makes it worse.
Attachment:
signature.asc
Description: This is a digitally signed message part