/etc/conf.d/pciparm

pciparm (text/plain), 790 bytes, created by Federico Ferri (RETIRED) on 2007-04-04 13:19:38 UTC

# refer to:
# http://www.gentoo.org/doc/en/articles/hardware-stability-p2.xml
# for a good article on pci tweaking

# report bugs to: http://bugs.gentoo.org/show_bug.cgi?id=173347

# "open up" the PCI bus by allowing fairly long bursts
# for all devices, increasing performance
# (equivalent to: setpci -v -d *:* latency_timer=b0)

LATENCY_TIMER_ALL="b0"

# maximize latency timers for network and audio,
# allowing them to transmit more data per burst,
# preventing buffer over/underrun conditions

# 1) specify wich cards you want to tweak:
TWEAK_CARDS="00:0f.0 00:0e.0"

# 2) set inidivual card params
LATENCY_TIMER_00_0f_0="ff"
LATENCY_TIMER_00_0e_0="ff"
# (equivalent to: setpci -v -s 00:0f.0 latency_timer=ff,
#                 setpci -v -s 00:0e.0 latency_timer=ff)

VERBOSE="yes"