DragonFly commits List (threaded) for 2011-04
git: kernel - Fix CAM tag reservation for AHCI and SILI driver
Author: Matthew Dillon <firstname.lastname@example.org>
Date: Sat Apr 9 19:56:24 2011 -0700
kernel - Fix CAM tag reservation for AHCI and SILI driver
* These drivers were adjusting the number of available tags upward
using the wrong CAM call, which resulted in CAM not actually queueing
multiple tags. Use the correct call.
* With the issue fix and verified up to a combined 31 read and write
requests can now be queued in parallel to a SATA drive via the AHCI
driver. It does appear to make a difference.
Summary of changes:
sys/dev/disk/ahci/ahci_cam.c | 12 +++++++++---
sys/dev/disk/sili/sili_cam.c | 12 +++++++++---
2 files changed, 18 insertions(+), 6 deletions(-)
DragonFly BSD source repository