* [Bloat] passive network delay monitoring utility
@ 2017-05-01 0:41 Kathleen Nichols
2017-05-23 19:22 ` Jim Gettys
0 siblings, 1 reply; 5+ messages in thread
From: Kathleen Nichols @ 2017-05-01 0:41 UTC (permalink / raw)
To: bloat
Hi,
I've just made one of the tools I use to measure network delay
available with a GPLv2 license. Perhaps it will be of intererst.
https://github.com/pollere/pping
Kathie
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Bloat] passive network delay monitoring utility
2017-05-01 0:41 [Bloat] passive network delay monitoring utility Kathleen Nichols
@ 2017-05-23 19:22 ` Jim Gettys
2017-05-23 19:50 ` Eric Dumazet
2017-05-26 18:41 ` Kathleen Nichols
0 siblings, 2 replies; 5+ messages in thread
From: Jim Gettys @ 2017-05-23 19:22 UTC (permalink / raw)
To: Kathleen Nichols; +Cc: bloat
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Those of you who have not looked at pping should do so.
See: http://pollere.net/pping.html for a description, and look at the
slides linked to on that page.
In particular, it would be sweet to run this on a home router, as you can
monitor latency simultaneously in either direction. Then we can point a
finger properly at the ISP or at the WiFi in the home network (encouraging
either/both to get fixed).
Anyone interested in undertaking such a project with me, please drop me a
note.
The only downside is that pping is a C++ app, which makes it big for a home
router, so it can't be used on old small home routers due to footprint
issues; but many current home routers would have space for it.
- Jim
On Sun, Apr 30, 2017 at 8:41 PM, Kathleen Nichols <nichols@pollere.com>
wrote:
>
> Hi,
> I've just made one of the tools I use to measure network delay
> available with a GPLv2 license. Perhaps it will be of intererst.
>
> https://github.com/pollere/pping
>
> Kathie
> _______________________________________________
> Bloat mailing list
> Bloat@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/bloat
>
[-- Attachment #2: Type: text/html, Size: 2653 bytes --]
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Bloat] passive network delay monitoring utility
2017-05-23 19:22 ` Jim Gettys
@ 2017-05-23 19:50 ` Eric Dumazet
2017-05-26 17:31 ` Kathleen Nichols
2017-05-26 18:41 ` Kathleen Nichols
1 sibling, 1 reply; 5+ messages in thread
From: Eric Dumazet @ 2017-05-23 19:50 UTC (permalink / raw)
To: Jim Gettys; +Cc: Kathleen Nichols, bloat
I had the honor to attend Kathleen presentation at Google ;)
I then worked on making sure TCP TS TSval would use 1ms units,
regardless of CONFIG_HZ option in the kernel, since apparently some
distros/devices use HZ=250 or even HZ=100
This should be in linux-4.13 when released.
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/commit/?id=9a568de4818dea9a05af141046bd3e589245ab83
Cover letter for the patch series :
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/commit/?id=e26925ec03b31f5ae4c1fc544515486229334ef9
On Tue, 2017-05-23 at 15:22 -0400, Jim Gettys wrote:
> Those of you who have not looked at pping should do so.
>
>
> See: http://pollere.net/pping.html for a description, and look at the
> slides linked to on that page.
>
>
> In particular, it would be sweet to run this on a home router, as you
> can monitor latency simultaneously in either direction. Then we can
> point a finger properly at the ISP or at the WiFi in the home network
> (encouraging either/both to get fixed).
>
>
> Anyone interested in undertaking such a project with me, please drop
> me a note.
>
>
> The only downside is that pping is a C++ app, which makes it big for a
> home router, so it can't be used on old small home routers due to
> footprint issues; but many current home routers would have space for
> it.
>
>
> - Jim
>
>
>
>
>
>
>
> On Sun, Apr 30, 2017 at 8:41 PM, Kathleen Nichols
> <nichols@pollere.com> wrote:
>
> Hi,
> I've just made one of the tools I use to measure network delay
> available with a GPLv2 license. Perhaps it will be of
> intererst.
>
> https://github.com/pollere/pping
>
> Kathie
> _______________________________________________
> Bloat mailing list
> Bloat@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/bloat
>
>
> _______________________________________________
> Bloat mailing list
> Bloat@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/bloat
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Bloat] passive network delay monitoring utility
2017-05-23 19:50 ` Eric Dumazet
@ 2017-05-26 17:31 ` Kathleen Nichols
0 siblings, 0 replies; 5+ messages in thread
From: Kathleen Nichols @ 2017-05-26 17:31 UTC (permalink / raw)
To: Eric Dumazet, Jim Gettys; +Cc: bloat
Eric,
You are the king of Making The Right Thing Happen.
Kathie
On 5/23/17 12:50 PM, Eric Dumazet wrote:
> I had the honor to attend Kathleen presentation at Google ;)
>
> I then worked on making sure TCP TS TSval would use 1ms units,
> regardless of CONFIG_HZ option in the kernel, since apparently some
> distros/devices use HZ=250 or even HZ=100
>
> This should be in linux-4.13 when released.
>
> https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/commit/?id=9a568de4818dea9a05af141046bd3e589245ab83
>
> Cover letter for the patch series :
>
> https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/commit/?id=e26925ec03b31f5ae4c1fc544515486229334ef9
>
>
> On Tue, 2017-05-23 at 15:22 -0400, Jim Gettys wrote:
>> Those of you who have not looked at pping should do so.
>>
>>
>> See: http://pollere.net/pping.html for a description, and look at the
>> slides linked to on that page.
>>
>>
>> In particular, it would be sweet to run this on a home router, as you
>> can monitor latency simultaneously in either direction. Then we can
>> point a finger properly at the ISP or at the WiFi in the home network
>> (encouraging either/both to get fixed).
>>
>>
>> Anyone interested in undertaking such a project with me, please drop
>> me a note.
>>
>>
>> The only downside is that pping is a C++ app, which makes it big for a
>> home router, so it can't be used on old small home routers due to
>> footprint issues; but many current home routers would have space for
>> it.
>>
>>
>> - Jim
>>
>>
>>
>>
>>
>>
>>
>> On Sun, Apr 30, 2017 at 8:41 PM, Kathleen Nichols
>> <nichols@pollere.com> wrote:
>>
>> Hi,
>> I've just made one of the tools I use to measure network delay
>> available with a GPLv2 license. Perhaps it will be of
>> intererst.
>>
>> https://github.com/pollere/pping
>>
>> Kathie
>> _______________________________________________
>> Bloat mailing list
>> Bloat@lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/bloat
>>
>>
>> _______________________________________________
>> Bloat mailing list
>> Bloat@lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/bloat
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Bloat] passive network delay monitoring utility
2017-05-23 19:22 ` Jim Gettys
2017-05-23 19:50 ` Eric Dumazet
@ 2017-05-26 18:41 ` Kathleen Nichols
1 sibling, 0 replies; 5+ messages in thread
From: Kathleen Nichols @ 2017-05-26 18:41 UTC (permalink / raw)
To: Jim Gettys; +Cc: bloat
Couple of things. First, it's probably not hard to write a pping in
other languages
but c++ is my go to. (I am sort of learning javascript right now.) I
think it's great
if we get other versions.
Secondly, for anyone who seriously wants to localize delay in their
application/device/
what-have-you, I have other ways of doing that and I'm happy to discuss
working with
you but there will be $ involved.
Finally, I've been using my infant javascript skills (see paragraph 1)
to make a sort of
web page display for pping and I do plan to open source it when it's not
too embarassing but I'd be happy to connect with other people with a
serious interest in visualizing the
data in a meaningful way.
Kathie
On 5/23/17 12:22 PM, Jim Gettys wrote:
> Those of you who have not looked at pping should do so.
>
> See: http://pollere.net/pping.html for a description, and look at the
> slides linked to on that page.
>
> In particular, it would be sweet to run this on a home router, as you
> can monitor latency simultaneously in either direction. Then we can
> point a finger properly at the ISP or at the WiFi in the home network
> (encouraging either/both to get fixed).
>
> Anyone interested in undertaking such a project with me, please drop me
> a note.
>
> The only downside is that pping is a C++ app, which makes it big for a
> home router, so it can't be used on old small home routers due to
> footprint issues; but many current home routers would have space for it.
>
> - Jim
>
>
>
>
> On Sun, Apr 30, 2017 at 8:41 PM, Kathleen Nichols <nichols@pollere.com
> <mailto:nichols@pollere.com>> wrote:
>
>
> Hi,
> I've just made one of the tools I use to measure network delay
> available with a GPLv2 license. Perhaps it will be of intererst.
>
> https://github.com/pollere/pping <https://github.com/pollere/pping>
>
> Kathie
> _______________________________________________
> Bloat mailing list
> Bloat@lists.bufferbloat.net <mailto:Bloat@lists.bufferbloat.net>
> https://lists.bufferbloat.net/listinfo/bloat
> <https://lists.bufferbloat.net/listinfo/bloat>
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
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2017-05-01 0:41 [Bloat] passive network delay monitoring utility Kathleen Nichols
2017-05-23 19:22 ` Jim Gettys
2017-05-23 19:50 ` Eric Dumazet
2017-05-26 17:31 ` Kathleen Nichols
2017-05-26 18:41 ` Kathleen Nichols
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