| To: | Baruch Even <baruch@xxxxxxxxx> |
|---|---|
| Subject: | Re: netif_rx packet dumping |
| From: | jamal <hadi@xxxxxxxxxx> |
| Date: | 03 Mar 2005 17:03:06 -0500 |
| Cc: | Stephen Hemminger <shemminger@xxxxxxxx>, Injong Rhee <rhee@xxxxxxxxxxxx>, John Heffner <jheffner@xxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Yee-Ting Li <Yee-Ting.Li@xxxxxxx>, netdev@xxxxxxxxxxx |
| In-reply-to: | <42278122.6000000@xxxxxxxxx> |
| Organization: | jamalopolous |
| References: | <20050303123811.4d934249@xxxxxxxxxxxxxxxxx> <42278122.6000000@xxxxxxxxx> |
| Reply-to: | hadi@xxxxxxxxxx |
| Sender: | netdev-bounce@xxxxxxxxxxx |
On Thu, 2005-03-03 at 16:26, Baruch Even wrote: > NAPI was not used because it caused skews in the performance, I haven't > tested it myself, just passing hearsay. It will help to post on this list when such issues are noticed. It could be a simple a driver bug: such a the one posted on by Lennert 2 days ago on e1000 NAPI - such a bug could have had serious repurcasions on TCP because it sat on packets in DMA occasionally upto 2 seconds. Seems like that bug has been sitting there for a long time. What kernel version? What kind of skews? Is it possible you tell this person to repeat the tests with 2.6.11? cheers, jamal |
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