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| 17:08.54 | carmony | fungus: you around for a systems question? :P |
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| 17:09.38 | jsmith | carmony: Just shout out your question -- there are a lot of "systems" guys around :-p |
| 17:09.45 | carmony | haha |
| 17:09.50 | jsmith | carmony: Unless you're chicken -- and then we'll just laugh at you anyway :-p |
| 17:10.03 | carmony | Ok, so I've been battling a Vagrant/VirtualBox issue where I run our browser tests against it |
| 17:10.17 | carmony | and so far into the suite, the eth0 interface would lockup |
| 17:11.03 | carmony | causing tests to fail |
| 17:11.19 | carmony | So I've been trying thousands of things |
| 17:11.44 | carmony | I've narrowed it down to our code sends out thousands of UDP packets to StatsD |
| 17:11.55 | jsmith | Running out of open file handles? |
| 17:12.06 | jsmith | That'd be my first guess |
| 17:12.10 | carmony | I tried increasing that, will had problems |
| 17:12.20 | jsmith | Hmmmmmn.... |
| 17:12.29 | carmony | So when I comment out the StatsD send code |
| 17:12.30 | carmony | it works |
| 17:12.43 | carmony | I'm just trying to figure out a way to verify this diagnosis |
| 17:12.57 | carmony | like some command to inspect what the eth0 is doing |
| 17:13.59 | josephscott | do you have any firewall rules running too? |
| 17:15.15 | josephscott | could also be virtualbox specific |
| 17:15.35 | jsmith | Yeah, to be perfectly honest, I've never been a huge fan of VirtualBox |
| 17:15.55 | josephscott | what is the virtualbox network type? I know they support bridged and nat |
| 17:16.16 | josephscott | might try bridged if you've been using nat, just to see if that makes a difference |
| 17:18.51 | carmony | nat |
| 17:19.23 | josephscott | you could be filling up the nat table then |
| 17:19.23 | fungus | carmony, the command to see what eth0 is doing is: tcpdump |
| 17:19.50 | josephscott | though for UDP it shouldn't be tracking much |
| 17:19.54 | josephscott | if anything |
| 17:20.39 | carmony | yeah, I'm using tcpdump to watch, and it just gets to a point where it just... hangs |
| 17:20.42 | fungus | you can capture both inside the VM, and outside the VM. |
| 17:20.56 | carmony | oooh, I haven't tried capturing outside |
| 17:21.21 | fungus | If they differ, then it's likely a virtualbox problem. |
| 17:21.30 | carmony | yeah |
| 17:21.39 | carmony | I think I'm just overloading the virtualbox nic |
| 17:21.52 | carmony | virtual nic or whatever it is called |
| 17:22.02 | josephscott | try it bridged, just to see if that makes any difference |
| 17:22.37 | josephscott | I don't know the details of how the NAT hashing works for virtualbox, for UDP it shouldn't be tracking connections, but strangers things have happened |
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| 17:35.16 | jsmith | josephscott: Typically, NAT for UDP still requires a state table, because UDP is stateless -- most NAT firewalls keep a state table so that if a packet comes from the previous destination IP and port (for a limited amount of time, typically between 1 and 5 minutes), it'll be allowed back through the firewall |
| 17:36.55 | josephscott | jsmith: yeah, but for the UDP case the NAT table should be optimized to expect lots of "stuff" |
| 17:37.12 | josephscott | anyway, that was why I suggested trying it with a bridged interface instead |
| 17:37.18 | carmony | which makes me wonder if the vbox nat for udp sucks at 100/s |
| 17:37.29 | josephscott | if it still didn't work after that then it wasn't a NAT issue |
| 17:37.30 | carmony | bridged is hard |
| 17:37.36 | carmony | because I use NFS |
| 17:37.39 | josephscott | why is bridged hard? |
| 17:37.41 | carmony | for the vagrant mounts |
| 17:38.10 | josephscott | NFS, well, I wash my hands clean of this whole conversation now :-) |
| 17:38.14 | carmony | vagrant + nfs + bridged is complicated |
| 17:38.15 | carmony | lol |
| 17:38.21 | josephscott | $8ball is NFS evil? |
| 17:38.21 | tobcri | josephscott: Yes. |
| 17:38.26 | josephscott | there you have it :-) |
| 17:38.46 | carmony | NFS is better performance than VirtualBox's Shared Folders on OS X |
| 17:39.04 | josephscott | are these NFS mounts inside the VM, or they just host the VM backend storage? |
| 17:39.45 | carmony | so vagrant creates the NFS mounts on my host and has the VM mount those for "shared" folders |
| 17:39.47 | fungus | wow, that's harsh. |
| 17:39.50 | carmony | so not the whole OS |
| 17:40.06 | josephscott | gotcha |
| 17:40.09 | fungus | NFS is "better" than something else. It must be bad. |
| 17:40.26 | fungus | ;) |
| 17:40.27 | josephscott | you could still that in a bridged situation |
| 17:41.03 | fungus | carmony, ever think about trying VMware? |
| 17:43.03 | carmony | I did awhile ago |
| 17:43.07 | carmony | need to look at it again |
| 17:43.57 | josephscott | if this is a NAT issue using other VM layers may or may not solve the issue |
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| 20:48.03 | stderr- | SunSparc: Golang++ |
| 20:48.17 | SunSparc | stderr-: :) |
| 20:48.25 | SunSparc | I dig it. |
| 20:48.55 | SunSparc | Though at times I miss python. |
| 20:49.09 | stderr- | yea I love it. I've been putting together a little photography site for my Dad and I'm using Revel |
| 20:49.37 | stderr- | been doing a lot of little projects in it. After I used it to solve several of the levels for the Stripe CTF, though, I've really been immersing myself. |
| 20:49.45 | stderr- | Just slapped a Gopher sticker on my laptop in fact |
| 20:49.53 | stderr- | and I don't slap stickers on willy nilly, let me tell ya. |
| 20:49.54 | stderr- | :P |
| 20:50.24 | SunSparc | I have not looked at Revel. Only framework I have looked at so far is Martini. |
| 20:50.39 | SunSparc | A sticker?! Wow, that is commitment. :) |
| 20:50.55 | stderr- | haha |
| 20:51.14 | SunSparc | You looking for a new gig? |
| 20:51.27 | stderr- | Naw |
| 20:51.48 | stderr- | I know a couple people that might be interested though, I'll forward the email to em. |
| 20:51.50 | SunSparc | I figured you probably were not. |
| 20:52.10 | SunSparc | Cool. |
| 20:53.09 | SunSparc | I am working on creating a stream logger in go at the moment. Playing with the net package. Fun stuff. |
| 20:53.14 | stderr- | dang now you got me itching to write some more Go. It's so much fun. |
| 20:54.02 | stderr- | my only complaint is the dependency on GOPATH, but that's fairly minor |
| 20:54.34 | SunSparc | Yeah, gopath is an interesting dependency. |
| 20:55.03 | SunSparc | Go is such a great and powerful language. I am really enjoying it. |
| 20:56.01 | stderr- | best concurrency primitives of any language. So easy to work with. |
| 20:56.13 | stderr- | mmmm channels. |
| 20:56.28 | SunSparc | heh, concurrency and channels are amazing. |
| 20:57.13 | SunSparc | This is one of those languages that make me think, why have we been using any other languages before now? |
| 20:57.41 | stderr- | yea, I can't wait til it gets more traction and with it more libraries |
| 20:57.49 | stderr- | I have no doubt Go is going to become very, very popular |
| 20:58.35 | SunSparc | My company (SmartyStreets) is certainly helping with that. Check out the GoConvey testing package: goconvey.co |
| 20:59.23 | stderr- | :o you're the guys behind GoConvey? I just started using it last weekend! I love it. |
| 20:59.35 | SunSparc | :) |
| 21:00.03 | SunSparc | Yeah, we love it too. We use it for all our stuff. |
| 21:00.31 | SunSparc | We are rewriting all our services in go and using tests on all of it. |
| 21:02.58 | stderr- | you're lucky man, you're getting a headstart on a language that will be very prominent in the future, I think. |
| 21:03.23 | SunSparc | True that. I consider myself to be in a very amazingly fortunate position. |
| 21:03.58 | SunSparc | I get to do devops in python and golang for service code. It's a dream. |
| 21:04.24 | stderr- | man that's nice. |
| 21:04.42 | stderr- | I can't complain, either, although I certainly wish there was more Go here. |
| 21:05.31 | SunSparc | Perhaps some inception comments about how great go is could move you more that direction. ;) |
| 21:08.14 | stderr- | yea I've been fairly loud about how awesome Go is during/since Stripe CTF |
| 21:08.43 | SunSparc | Then you have planted the seed. |
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| 21:09.32 | stderr- | just have to fertilize it every now and again ;) |
| 21:09.51 | SunSparc | hah, yes |
| 22:04.22 | TuxToaster | ~rlart |
| 22:04.22 | infobot | beats carmony to within 2.54cm of his life |
| 22:04.30 | carmony | :O |
| 22:06.51 | carmony | SunSparc: so you're a big Go fan? |
| 22:07.35 | SunSparc | carmony: I do enjoy it. |
| 22:10.57 | TuxToaster | ~go SunSparc |
| 22:11.07 | TuxToaster | $chuck-fact |
| 22:11.07 | tobcri | Chuck Norris' iPod came with a real charger instead of just a USB cord |
| 22:12.21 | SunSparc | Hey TuxToaster, do any Minecrafting lately? |
| 22:12.48 | TuxToaster | nope. Crazy work schedule the past few months |
| 22:13.12 | SunSparc | Bummer. |
| 22:13.35 | TuxToaster | though it's tempting to get a pickaxe and go mining around macnewbold's desk... I need to find where his diamonds hide |
| 22:14.01 | SunSparc | lol, I say go for it. |
| 22:14.26 | TuxToaster | http://www.youtube.com/watch?v=pF843ZbQWn4 |
| 22:18.04 | SunSparc | Watch out for traps around macnewbold's desk. :) |
| 22:18.38 | TuxToaster | yup yup |
| 22:19.35 | SunSparc | I still find time every now and again to play. Gotta harvest wheat and feed the animals you know. |