Hello Experts, My "custom" driver execution takes long with ICH9 as compared to PIIX3, ~4X difference. Custom device is a pluggable device registered. Apart from 2 "ich9pcibridge" devices I don't see any thing else "new" in ICH9. With ICH9, AHCI is connected on other side of the bridge (on bus 2), while on PIIX3, it is on the root port. Could this be the reason for slowness ? I used same settings between the two chipsets, have disabled "audio" in both instances since I don't need them. Is there a way to reduce overall traffic ? I presume all current devices in ICH9 are required (?) but is there a way to improve performance ? I am not much bothered about other devices, apart from having functional chipset.
Thanks.
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