On Tue, 13 Jan 2004 17:55:32 -0800
Ben Greear <greearb@xxxxxxxxxxxxxxx> wrote:
> Stephen Hemminger wrote:
> > I have a patch for name hashing, but don't know if it's needed.
> > Even without it I can add 9 thousand bridge entries,
> > and each one takes longer to start the command than add the entry now.
> Check out the af_packet code. At least some branches do a
> device lookup by name for each transmitted packet. One
> method is: packet_sendmsg_spkt
> packet_sendmsg gets by index, which could also be hashed...
> At one time ifconfig -a was almost un-usable with large numbers
> of devices, but I think it has been improved. I haven't tried on
> large numbers of devices lately...
I found some other fast-path'ish cases of dev_get_by_name(), one of which
is atalk_rcv()'s handling of IP over DDP packets.
I didn't even search around for __dev_get() and dev_get_by_index() cases.
There are probably some more there.
Therefore, I think it's wise to just do this right from the start and use a
Stephen can you test up and submit the netdev name hash patch you have?