Messages in this thread |  | | Date | Thu, 14 Sep 2000 16:40:55 -0400 (EDT) | From | jamal <> |
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What Alexey's code does is _not_ preallocation -- it does re-cycling. On tx_completion, the skb is recycled onto a recycle queue unless the queue is full (which is a tunable parameter) in which case it is freed. This is more sensible than doing pre-allocation during idle times or other smart schemes. On a busy system this queue will always have something.
What i meant by aging is to have a separate thread that prunes the queue based on age i.e how long the skb has been sitting there etc. I think Jes had a bottom-half running there; a simple per-cpu timer might suffice. The heuristic (such as the timer decay etc) for this part needs a study and thats what Robert and i are planing to do.
cheers, jamal
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