| To: | linux-mips <linux-mips@linux-mips.org> |
|---|---|
| Subject: | Re: Au1550 ethernet throughput low |
| From: | jaypee@hotpop.com |
| Date: | Thu, 14 Jul 2005 13:52:36 +0000 |
| In-reply-to: | <A8A67F242940E246A515077CF9ECACC16B16C4@dbde01.ent.ti.com> (from ajaysingh@ti.com on Thu Jul 14 06:02:22 2005) |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <A8A67F242940E246A515077CF9ECACC16B16C4@dbde01.ent.ti.com> |
| Sender: | linux-mips-bounce@linux-mips.org |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 14/07/05 06:02:22, Singh, Ajay wrote: Is your driver on Linux 2.6 NAPI enabled ? And is CONFIG_PREEMPT=y? Turning preempt on made no difference, maybe a little worse.I put a scope on the TX enable line and it is high for ~100us and low ~50us. With the 2.4 kernel on au1000 it is high all the time. This to me suggest there is some thing wrong in the au1000_eth driver/interrupt handling/ packet scheduling in 2.6 as it is not keeping the DMA buffers full. - -- mailto:jaypee@hotpop.com http://www.jaypee.org.uk -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFC1m41ZDxnKy3oOpYRAhooAJ9W7J8ZpXywqW0jPxc0b8hI3iS/DwCfZzWM 6lp6Z7cHYwW3WWW87SJrZPI= =1No0 -----END PGP SIGNATURE----- |
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