From: "R." <redag2@gmail.com>
To: Dave Taht <dave.taht@gmail.com>
Cc: "cerowrt-devel@lists.bufferbloat.net"
<cerowrt-devel@lists.bufferbloat.net>
Subject: Re: [Cerowrt-devel] cerowrt-3.10.44-6 released
Date: Sun, 6 Jul 2014 15:45:55 -0400 [thread overview]
Message-ID: <CACj-SW1M+V9k0AjEn38pAw_2suUbni00zDf+7oj-MhQKYFUtyw@mail.gmail.com> (raw)
In-Reply-To: <CAA93jw4MJxR9htBQJm5KzYgP1jOvFYQRF_zFwxnCLi1wV1XcUQ@mail.gmail.com>
All of my devices are connected on the 2.4 Ghz AP of a WNDR3800
running 3.10.44-6.
Here's my feedback:
+ WiFi stability has improved in the sense that the AP no longer disappears.
- Latency spikes still exist. Huge latency lag comes in for up to a
minute (can be seen in ping stats). It usually fixes itself within the
minute.
- Net connectivity can go out for up to a minute on all devices. It
usually fixes itself within the minute.
- "Failed to stop TX DMA, queues=0x004!" still occuring. Had 23
instances in the last 9 hours.
- New warning appears multiple time in logs: "daemon.warn
avahi-daemon[2154]: server.c: Packet too short or invalid while
reading known answer record. (Maybe a UTF-8 problem?)"
Overall, fairly satisfied.
On Thu, Jun 26, 2014 at 3:53 PM, Dave Taht <dave.taht@gmail.com> wrote:
> I have been blowing it up with continuous traffic, saturating the cpu,
> talking to multiple devices, using crypto and ethernet, now for
> several days.
>
> I am using sfq on the wifi, rather than fq_codel, at least temporarily.
>
> Occasionally, using the rrul test, I can get it to temporarily either
> lose a route or deassociate from wifi, or something else like netperf
> itself blowing up, but it always comes back within a few seconds. So
> far, using the rrul_be test I haven't seen that happen. I do see cpu
> absolutely maxed at present with rrul and not rrul_be.
>
> I have given up on tuning the wifi aggregate queue length (formerly
> 12, now 48) as much as I had before - as the previous setting had
> adverse effects on download throughput, so I'll put that fix in the
> next release and live with the added latency until we can pull
> together the make-wifi-fast project.
>
> I see an improvement on the simultaneous upload/download test from
> 10mbit up/.2 down to 6up,3down, latency (as measured on the main
> client) of about 80ms (which still sucks about 10x worse than what
> seems possible)
>
> I ran out of space on my packet captures...
>
> I am going to be adding more clients, switching back to fq_codel, and
> adding in ipv6 if this continues to take the load I am throwing at it.
> Then adding impairments to degrade the wifi to more marginal levels.
>
> Interestingly I have not got any instruction traps, nor the famed dma
> overrun bug/recovery in this release so far... I am encouraged, but
> until I setup a mac with bad connectivity and have things run for
> days and days I won't sleep well.
>
> And I had done a build from this codebase for the picostation and am
> watching that crash under normal load regularly. That box only has
> 32MB of memory, where the cerowrt box has 128MB memory.
>
>
> On Thu, Jun 26, 2014 at 12:28 PM, Jim Reisert AD1C
> <jjreisert@alum.mit.edu> wrote:
>> Been running since Wednesday evening, no issues so far.
>>
>> --
>> Jim Reisert AD1C, <jjreisert@alum.mit.edu>, http://www.ad1c.us
>
>
>
> --
> Dave Täht
>
> NSFW: https://w2.eff.org/Censorship/Internet_censorship_bills/russell_0296_indecent.article
> _______________________________________________
> Cerowrt-devel mailing list
> Cerowrt-devel@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/cerowrt-devel
prev parent reply other threads:[~2014-07-06 19:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-25 3:37 Dave Taht
2014-06-26 19:28 ` Jim Reisert AD1C
2014-06-26 19:53 ` Dave Taht
2014-07-06 19:45 ` R. [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://lists.bufferbloat.net/postorius/lists/cerowrt-devel.lists.bufferbloat.net/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CACj-SW1M+V9k0AjEn38pAw_2suUbni00zDf+7oj-MhQKYFUtyw@mail.gmail.com \
--to=redag2@gmail.com \
--cc=cerowrt-devel@lists.bufferbloat.net \
--cc=dave.taht@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox