* [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 [-- Attachment #1: Type: text/plain, Size: 1186 bytes --] 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
end of thread, other threads:[~2017-05-26 18:41 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 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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