Messages in this thread | | | From | "Joakim Tjernlund" <> | Subject | Re: NETIF_F_SG question | Date | Sat, 1 Feb 2003 23:16:45 +0100 |
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> Joakim Tjernlund <Joakim.Tjernlund@lumentis.se> : > [...] > > Surley the copy operation will cost something? > > Cost is hidden while checksumming. > > -- > Ueimor
Yes, I realize that you can make the cost much smaller by checksumming and copying at the same time. However for every word that is checksummed one must execute an extra store. That store will also hit the L1 cache, flushing more important data to memory, so maybe the cost is visible?
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