[webkit-dev] Git/SVN is slow

William Siegrist wsiegrist at apple.com
Thu Mar 15 14:43:17 PDT 2012


Thanks everyone for the debugging information. We are working on both hardware and software solutions, but I have no ETA to give you. 

-Bill



On Mar 15, 2012, at 2:05 PM, Levi Weintraub <leviw at google.com> wrote:

> Likewise in Mountain View... it's making WebKit gardening impossible :(
> 
> On Thu, Mar 15, 2012 at 2:03 PM, Dmitry Titov <dimich at chromium.org> wrote:
> over here in Seattle I am getting 5KiB/s all day, no way to get an updated checkout today :-(
> 
> 
> On Thu, Mar 15, 2012 at 10:54 AM, Jarred Nicholls <jarred at webkit.org> wrote:
> Well I was just about to follow up that from the east coast on Comcast bbone, I'm pulling at acceptable rates from git.webkit.org, ~700KiB/s.  That's about as fast as it's always been.  Same goes for nightly.webkit.org.
> 
> There's a number of possible issues that would result in slow response times and slow downloads.  E.g., it could be sheer packet loss between carrier backbones and not necessarily tapped bandwidth.
> 
> 
> On Thu, Mar 15, 2012 at 1:45 PM, Ryosuke Niwa <rniwa at webkit.org> wrote:
> I don't really think checking the latency is interesting. What's killing us is bandwidth. As far as I tested yesterday, the ping at my work (Google SF office) gives me a reasonable time as well.
> 
> There's something that's killing our bandwidth. Does anyone know some tools to investigate this?
> 
> - Ryosuke
> 
> 
> On Thu, Mar 15, 2012 at 10:40 AM, Jarred Nicholls <jarred at webkit.org> wrote:
> Ditto, @ ae-11-70 attempting to get to ae-21-60 the trace dies.  Pings to svn.webkit.org succeed in acceptable times however, for me.  Perhaps the hops following ae-11-70 and ae-21-60 simple aren't able to reply with proper ICMP packets; no real conclusion to based on that info alone, but maybe worth passing off to the provider and/or directly to Level3.
> 
> Jarred
> 
> 
> On Thu, Mar 15, 2012 at 1:22 PM, Levi Weintraub <leviw at google.com> wrote:
> Likewise, I lose everything past *.car1.sanjose2.level3.net. SVN updates are dog slow :(
> 
>  6  pr01-xe-8-2-0.sjc07.net.google.com (72.14.218.230)  4.306 ms  4.966 ms *
>  7  xe-11-1-0.edge2.sanjose3.level3.net (4.79.40.153)  20.116 ms  3.031 ms  3.056 ms
>  8  ae-31-90.car1.sanjose2.level3.net (4.69.152.203)  4.316 ms
>     ae-11-70.car1.sanjose2.level3.net (4.69.152.75)  4.239 ms
>     ae-21-60.car1.sanjose2.level3.net (4.69.152.11)  4.545 ms
>  9  * * *
> 10  * * *
> 11  * * *
> 
> 
> On Thu, Mar 15, 2012 at 7:31 AM, Philip Rogers <pdr at google.com> wrote:
> Bill,
> 
> I'm currently pulling from svn.webkit.org at what feels like 5kbps, and poor http://build.webkit.org/console hits the page refresh before it's even able to render to the bottom :(
> 
> Below is a traceroute to webkit.org:
> traceroute to svn.webkit.org (17.254.20.241), 30 hops max, 60 byte packets
>  1  DD-WRT (192.168.2.1)  0.233 ms  0.297 ms  0.371 ms
>  2  10.1.10.1 (10.1.10.1)  2.446 ms  2.445 ms  2.518 ms
>  3  96.176.191.1 (96.176.191.1)  24.451 ms  25.398 ms  28.688 ms
>  4  xe-11-0-0-0-sur01.a2atlanta.ga.atlanta.comcast.net (68.85.91.177)  14.588 ms  15.541 ms  15.733 ms
>  5  xe-2-1-3-0-ar01.b0atlanta.ga.atlanta.comcast.net (68.86.106.57)  16.563 ms  16.929 ms  16.946 ms
>  6  pos-3-6-0-0-cr01.atlanta.ga.ibone.comcast.net (68.86.93.201)  17.967 ms pos-3-5-0-0-cr01.atlanta.ga.ibone.comcast.net (68.86.93.125)  14.599 ms  11.428 ms
>  7  4.28.24.77 (4.28.24.77)  15.973 ms  17.858 ms  17.307 ms
>  8  vlan51.ebr1.Atlanta2.Level3.net (4.69.150.62)  19.688 ms vlan52.ebr2.Atlanta2.Level3.net (4.69.150.126)  14.891 ms vlan51.ebr1.Atlanta2.Level3.net (4.69.150.62)  15.116 ms
>  9  ae-73-73.ebr3.Atlanta2.Level3.net (4.69.148.253)  14.651 ms ae-63-63.ebr3.Atlanta2.Level3.net (4.69.148.241)  13.767 ms ae-73-73.ebr3.Atlanta2.Level3.net (4.69.148.253)  14.955 ms
> 10  ae-7-7.ebr3.Dallas1.Level3.net (4.69.134.21)  34.004 ms  36.807 ms  34.950 ms
> 11  ae-3-3.ebr2.LosAngeles1.Level3.net (4.69.132.77)  66.601 ms  65.766 ms  66.692 ms
> 12  ae-6-6.ebr2.SanJose5.Level3.net (4.69.148.202)  78.577 ms  78.007 ms  78.175 ms
> 13  ae-1-100.ebr1.SanJose5.Level3.net (4.69.148.109)  78.594 ms  78.520 ms ae-5-5.ebr4.SanJose1.Level3.net (4.69.148.142)  81.371 ms
> 14  ae-34-34.ebr2.SanJose1.Level3.net (4.69.153.33)  71.989 ms ae-5-5.ebr1.SanJose1.Level3.net (4.69.148.138)  77.341 ms ae-34-34.ebr2.SanJose1.Level3.net (4.69.153.33)  77.662 ms
> 15  ae-62-62.csw1.SanJose1.Level3.net (4.69.153.18)  80.375 ms ae-61-61.csw1.SanJose1.Level3.net (4.69.153.2)  87.895 ms ae-81-81.csw3.SanJose1.Level3.net (4.69.153.10)  77.137 ms
> 16  ae-31-90.car1.SanJose2.Level3.net (4.69.152.203)  77.660 ms ae-41-80.car1.SanJose2.Level3.net (4.69.152.139)  78.313 ms ae-21-60.car1.SanJose2.Level3.net (4.69.152.11)  77.746 ms
> 17  * * *
> 18  * * *
> 19  * * *
> 20  * * *
> 21  * * *
> 22  * * *
> 23  * * *
> 24  * * *
> 25  * * *
> 26  * * *
> 27  * * *
> 28  * * *
> 29  * * *
> 30  * * *
> 
> Thanks for looking into this.
> Philip
> 
> On Thu, Mar 15, 2012 at 10:23 AM, William Siegrist <wsiegrist at apple.com> wrote:
> Our network provider did not find anything wrong. If anyone is currently seeing slow download times, I would like to see a traceroute to the server.
> 
> Thanks,
> -Bill
> 
> 
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