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Groups > linux.kernel > #1299179
| From | Andy Tai <atai@atai.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | latency problem of TCP/IP over USB (rndis_host driver related) |
| Date | 2015-12-30 01:50 +0100 |
| Message-ID | <qLd7I-7Ke-7@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
Hi, I tried to connect two Linux computers connected via a USB2 link and use the rndis_host driver to establish a logical ethernet connection over this USB link. I can have normal TCP/IP connections (TCP and UDP) over this setup between the two computers; ssh, sftp and ping all work over this logical ethernet connection. The only issue is that there is significant delay in the packet arrival time; it takes 0.3 secs for some packets to go through this ethernet connection (same for both TCP and UDP). This compares with packet traverse time over regular ethernet (CAT5 cables) between two Linux computers that is in the sub millisecond range. 0.3 sec latency is too large for my applications. What can I do to reduce the latency? Thanks for any info on this. -- Andy Tai, atai@atai.org, Skype: licheng.tai Year 2015 民國104年 自動的精神力是信仰與覺悟 自動的行為力是勞動與技能 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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latency problem of TCP/IP over USB (rndis_host driver related) Andy Tai <atai@atai.org> - 2015-12-30 01:50 +0100
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