Hello,
I trie to get value from api request
i have this response
You might want to review this https://github.com/golang/go/issues/10958
> On Dec 11, 2018, at 10:16 PM, robert engels wrote:
>
> Reviewing the code, the 5s of cpu time is technically the stop-the-world
> (STW) sweep termination
>
> So, I think the cause of your problem is that you have a
Reviewing the code, the 5s of cpu time is technically the stop-the-world (STW)
sweep termination
So, I think the cause of your problem is that you have a tight / “infinite”
loop that is not calling runtime.Gosched(), so it is taking a very long time
for the sweep termination to complete.
>
Btw, I only am guessing large stacks because the memory in use is not that
great or expanding, and the CPU time is massive - meaning walking lots of stack
or root objects.
> On Dec 11, 2018, at 9:43 PM, robert engels wrote:
>
> Well, your pause is clearly related to the GC - the first phase,
Well, your pause is clearly related to the GC - the first phase, the mark, is
5s in #17. Are you certain you don’t have an incorrect highly recursive loop
that is causing the stack marking to take a really long time… ?
> On Dec 11, 2018, at 8:45 PM, Eric Hamilton wrote:
>
> Of course. (I
Hi Than,
I will start with CABIOracle as your suggestion. Thanks again. :)
BR.
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Of course. (I forgot about that option and I'd collected those traces at a
time when I thought I'd ruled out GC-- probably misread MemStats values).
Here's the gctrace output for a repro with a 5.6 second delay ending with
finish of gc17 and a 30+ second delay ending in SIGTERM (which
That looks very good, and easy to use, but as I described, it won’t test the
TCP flow control behavior due to dropped packets - it can inject delays, etc.
but not drop IP datagrams.
At the end of the day though, if you configure the delays correctly and
randomly, you can simulate the most real
On Wed, Dec 12, 2018 at 10:35:14AM +1030, Dan Kortschak wrote:
> Is anyone aware of testing infrastructure for simulating flakey
> networks without recourse to iptables on linux, i.e. a Go package/type
> that can be used to to this?
toxiyproxy maybe interesting?
Yes, you can do it for UDP easily, but anything TCP/stream based you can
“throttle”, but can’t simulate dropped packets by a router, etc. unless using a
raw IP proxy and you need to perform packet manipulation, etc. - not trivial.
What I’ve found is that using “delays” only test part of the
Yeah, that's the kind of thing.
On Tue, 2018-12-11 at 19:45 -0500, Ian Denhardt wrote:
> Quoting robert engels (2018-12-11 19:39:46)
>
> >
> > I am not sure you can do this at the application layer - you need
> > kernel support to drop packets.
> One could write a mock implementation of e.g.
Quoting robert engels (2018-12-11 19:39:46)
> I am not sure you can do this at the application layer - you need kernel
> support to drop packets.
One could write a mock implementation of e.g. net.Conn that does this
kind of simulation; have a goroutine that calls time.Sleep at random
intervals
I am not sure you can do this at the application layer - you need kernel
support to drop packets.
You can however trivially create a TCP proxy that slows traffic simulating
dropped packets / congested networks.
You might be able to do a proxy in Go using raw packets, but a lot of work.
Maybe
I think it would be more helpful if you used gctrace=1 to report on the GC
activity.
> On Dec 11, 2018, at 3:37 PM, e...@kasten.io wrote:
>
> I am observing pause failures in an application and it appears to me that I’m
> seeing it take from 5 to 28 seconds or more for the StopTheWorld to take
Is anyone aware of testing infrastructure for simulating flakey
networks without recourse to iptables on linux, i.e. a Go package/type
that can be used to to this?
thanks
Dan
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I am observing pause failures in an application and it appears to me that
I’m seeing it take from 5 to 28 seconds or more for the StopTheWorld to
take effect for GC.
In all likelihood the problem lies in the application, but before I start
changing it or attempting to tune GC, I’d like to
Thank you for the details!
Regards
dharani
On Tue, Dec 11, 2018 at 2:13 AM wrote:
> Here are some code generators that let you define template parameters:
>
> https://github.com/cheekybits/genny
> https://github.com/taylorchu/generic
> https://github.com/joeshaw/gengen
>
Interesting list.
It was actually done by Phil Winterbottom, Sean Dorward, and myself. Rog
and Charles picked it up later and took on stewardship, which they did well.
-rob
On Wed, Dec 12, 2018 at 3:41 AM Christopher Sebastian
wrote:
> Also, don't forget about the pinnacle of human
Thanks. I opened the issue. Looks like it is being fixed in IntelliJ 2019.1.
> On Dec 11, 2018, at 9:56 AM, Florin Pățan wrote:
>
> Hi Robert,
>
> I would suggest creating an issue on our tracker so that the team can have a
> look at the issue and help you out.
> I pre-filled the issue for
Also, don't forget about the pinnacle of human achievement in OS design:
Inferno.
https://en.wikipedia.org/wiki/Inferno_(operating_system)
http://www.vitanuova.com/inferno/
https://bitbucket.org/inferno-os/inferno-os
Inferno was written in the early 90's by Ken Thompson, Rob Pike, Roger
Peppé,
Hi again,
>>I am interested in contributing code to enable ARM port. I plan to spend
some times on learning gofrontend firstly, then the bridge.
That sounds great. I can certainly offer advice and help along the way.
>>1, Is there any arch-specific code/IR in gofrontend?
The frontend code
Hi Robert,
I would suggest creating an issue on our tracker so that the team can have
a look at the issue and help you out.
I pre-filled the issue for you at this link https://goo.gl/ytk38S but you
will have to attach the images/submit the issue so that you can get the
updates on it. You will
Check out:
- https://godoc.org/golang.org/x/net/icmp
- https://godoc.org/golang.org/x/net/ipv4
- https://godoc.org/golang.org/x/net/ipv6
Cheers,
Christian
On Tuesday, December 11, 2018 at 9:02:02 AM UTC+1, Naveen Neelakanta wrote:
>
> Hi All,
>
> I have an application in golang, which
Hi Khaled,
he had two go binaries in his path with different versions. So he had
multiple installations mixing up.
Try to look if you have multiple go installations - if you uninstall one
and then again put another on the
system you still end up with two. On Linux you could have installed one
Here are some code generators that let you define template parameters:
https://github.com/cheekybits/genny
https://github.com/taylorchu/generic
https://github.com/joeshaw/gengen
https://github.com/clipperhouse/gen
Making use of Go templates:
https://github.com/ncw/gotemplate
Sorry for I was not clear in my first mail.
People may be having some solution when they need generics in Go. For
example, I see some details here:
https://appliedgo.net/generics/
I was wondering if there is any solution that is popular that I can use.
The reason why I am looking for is, I
On Tuesday, December 11, 2018 at 3:35:37 AM UTC+1, Jason E. Aten wrote:
>
> For full, actual python inside Go, one could combine:
>
> (a) https://github.com/iodide-project/pyodide has the python scientific
> stack compiled to wasm (python + numpy + scipy + numplotlib)
>
> and
>
> (b) either
Hi All,
I have an application in golang, which requires me to bind to interface and
send ping request.
Any help would be appreciated
Thanks
Naveen
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