On Tue, 2007-03-13 at 21:03 +0100, Andreas Westin wrote: > Thomas Otto wrote: > >> It's sata drives and from what I can gather from hdparm DMA is enabled. > >> I'm not able to test if this occurs without dmcrypt since all drives on > >> this controller (SATA_SIL) uses dmcrypt and my system disc is SCSI. This > >> problem has only been present in recent kernels, >=2.6.18. > >> > > > > Yes, as Jon pointed out, this seems to be the same unfixed problem as > > before, but this time reniceing (for ext3) the corresponding kjournalds > > doesn't help that much. > > > > <http://thread.gmane.org/gmane.linux.kernel.device-mapper.dm-crypt/1940> > > > > Ok, I saw in that thread that someone had made some kind of fix for it > in 2.6.19. But I'm using 2.6.19 and it's still present, haven't tried > 2.6.20 yet since I'm using the grsecurity patch and it's not released > for 2.6.20 yet. > hi guys I have a 3ware 9650SE PCI-Express controller 8 Drives WDC 320GB RAID5 2,1 TB GPT partition table created with parted XFS filesystem bonnie++ results: encrypted with cryptsetup-luks with aes_64 blowfish serpent sha256: write 50MB/S rewrite 30MB/S read 50MB/S unencrypted: write 180MB/S rewrite 90MB/S read 450MB/S so, W T F ? :( using kernel 2.6.20 and 2.6.20-gentoo-r2 2.6.17 .18 and 19 same --------------------------------------------------------------------- dm-crypt mailing list - http://www.saout.de/misc/dm-crypt/ To unsubscribe, e-mail: dm-crypt-unsubscribe@xxxxxxxx For additional commands, e-mail: dm-crypt-help@xxxxxxxx
