| To: | netdev@xxxxxxxxxxx |
|---|---|
| Subject: | Re: RFC: NAPI packet weighting patch |
| From: | Rick Jones <rick.jones2@xxxxxx> |
| Date: | Wed, 22 Jun 2005 13:35:46 -0700 |
| Cc: | hadi@xxxxxxxxxx, becker@xxxxxxxxx |
| In-reply-to: | <20050622.132241.21929037.davem@xxxxxxxxxxxxx> |
| References: | <1119458226.6918.142.camel@xxxxxxxxxxxxxxxxxxxxx> <200506221801.j5MI11xS021866@xxxxxxxxxxxxxxxxx> <20050622180654.GX14251@xxxxxxxxxxxxx> <20050622.132241.21929037.davem@xxxxxxxxxxxxx> |
| Sender: | netdev-bounce@xxxxxxxxxxx |
| User-agent: | Mozilla/5.0 (X11; U; HP-UX 9000/785; en-US; rv:1.6) Gecko/20040304 |
Everyone seems to have this absolute fetish about batching the RX descriptor refilling work. It's wrong, it should be done when you pull a receive packet off the ring, for many reasons. Off the top of my head: 1) Descriptors are refilled as soon as possible, decreasing the chance of the device hitting the end of the RX ring and thus unable to receive a packet. IFF one pokes the NIC for each buffer right? rick jones |
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