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diff --git a/sys-apps/pciutils/files/conf.d-pciparm b/sys-apps/pciutils/files/conf.d-pciparm
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+++ b/sys-apps/pciutils/files/conf.d-pciparm
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+# PCI tweaking article:
+# http://www.gentoo.org/doc/en/articles/hardware-stability-p2.xml
+#
+# Apply to all devices:
+# PCIPARM_ALL="...."
+# Cards also can be addressed by vid:pid or by bus:slot.func
+# (see setpci man page relative to -d and -s options)
+# PCIPARM_(BUS|VENDOR)_#="...."
+# Where # is sequentially numbered from zero.
+
+# Examples:
+# "open up" the PCI bus by allowing fairly long bursts
+# for all devices, increasing performance
+# (equivalent to: setpci -v -d *:* latency_timer=b0)
+#PCIPARM_ALL="latency_timer=b0"
+
+# maximize latency timers for network and audio,
+# allowing them to transmit more data per burst,
+# preventing buffer over/under-run conditions
+#PCIPARM_BUS_0="00:04.0 latency_timer=ff"
+#PCIPARM_BUS_1="01:04.0 latency_timer=ff"
+#PCIPARM_VENDOR_0="1057:3410 latency_timer=ff"
+
+# -v : whether to be verbose about changes
+# -D : dry-run, no commit
+# -f : do not warn if the change is already set
+# (see the setpci manpage for more advanced options)
+SETPCI_OPT="-f"