<bmcginty>
Anyone know if there's a way to see what output travis is giving for build errors? My last PR failed, but I'm compiling and it just fine from here...running [
<jokke>
sure
<jokke>
click on the link
<bmcginty>
jokke: I tried that and I don't get anything other than that the build failed. I'm using some text-to-speech software, so I might be running into a snag with the travis sites accessibility...
<jokke>
bmcginty: No output has been received in the last 10m0s, this potentially indicates a stalled build or something wrong with the build itself.
<bmcginty>
jokke: I've got the elapsed time and total time, then it lists other jobs that have been run on the crystal repo. Is there something there I should be seeing?
<jokke>
the macos build
<bmcginty>
jokke: ah. okay. thanks.
<jokke>
any time :)
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<bmcginty>
Hmm. Wonder if I could get a mac environment vm to try building on. off to google.
<jokke>
:)
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<crystal-gh>
[crystal] Sija opened pull request #3942: More docs cleanup (master...cleanup-docs) https://git.io/vDvJa
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<jokke>
hi
<jokke>
is there a flag to ignore optimization for a constant so that even if it's never referenced it will be in the resulting binary?
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<unshadow_>
Can someone try the `make static` at https://github.com/bararchy/sslscanner/ and tell me if it works for you ? (Not working for me on Arch Linux C-0.20.5)
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<jokke>
unshadow: i would but i'm also on arch
<unshadow>
jokke: thanks :) on Arch they removed all static libs so it's a huge pain to static compile it (libC is giving massive errors)
<jokke>
yeah
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<jeromegn>
unshadow: I can try on macos
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<unshadow>
jeromegn: Cool ! Thanks dude
<jeromegn>
do I need special libs? looks like the linker failed on my first attempt
<wmoxam>
Anyone have experience with Crystal + travis-ci? I'm getting timeouts with no output ... could that be related to using too much memory or some other resource problem?
<unshadow>
Hm.... I didnt get that error, for me it fully compiled, but then the bin throws big issues
<unshadow>
jeromegn: does regular make works ?
<jeromegn>
it did work with regular make
<unshadow>
Hm.....
<jeromegn>
yea, appears to be a macos thing that gives that lcrt0 lib not found
<jeromegn>
anybody know how I can cleanly reuse a TCPSocket?
<jeromegn>
I'm trying to use a generic TCP connection pool (from the pool shard from ysbaddaden) but I can't check the connections back into the pool after use because they don't seem to clean up well. Definitely my bad... I think I probably need to close the IO and then reopen it somehow before checking the connection back in?
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<michael_campbell>
newbie question: IN ruby I often do things like (foo, bar) = some_string.split(/,/) This array destructuring seems not allowed in crystal. Is there an idiomatic replacement?
<jeromegn>
is it normal that my crystal program is consuming all CPU cores on my machine? I thought crystal only used on thread, one cpu.
<tilpner>
jeromegn - Are you using any non-Crystal libs that could cause that?
<BlaXpirit>
jeromegn, and are you sure it's not just during compilation?
<BlaXpirit>
but yeah, what libs do you use?
<jeromegn>
tilpner: well, I'm using a sockets a lot (those are LibC) and OpenSSL
<BlaXpirit>
openssl could easily be multithreaded itself
<jeromegn>
could be!
<jeromegn>
basically, it's all IO
<jeromegn>
TCP tunnel
<tilpner>
jeromegn - How do you measure the CPU usage?
<jeromegn>
I used the macos instruments app
<jeromegn>
and also looking at `top` while running it
<jeromegn>
from a `build --release` build
<jeromegn>
I'll try without SSL
<tilpner>
And what does top say for your process?
<jeromegn>
actually, I'm using htop. shows my 2 cores + 2 logical are almost at 100% when running `wrk` on it. my program is using most of the CPU. a bit hard to benchmark because it's a TCP tunnel. so there are 2 programs (one server, one client), wrk, and the thing being tunnelled (golang fasthttp server). So those 4 things are heavily being used while I run wrk.
<tilpner>
How much CPU does wrk take? It'd be easier to show a screenshot of htop
<tilpner>
ghc outputs reserved 1TB a while ago, that was fun
<tilpner>
jeromegn - What kind of improvement are you hoping for?
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<jeromegn>
we wrote a golang TCP reverse tunnel program and realized it was heavily CPU bound. For fun, I was trying to write it with Crystal instead. It gave us better throughput! 16K RPS vs 13K RPS. When we originally profiled the golang program, it showed most of the time was spent in syscalls for reading and writing to an IO.
<jeromegn>
golang uses all cores AFAIK, but Crystal doesn't.
<tilpner>
Where does "fork" come from?
<jeromegn>
Process.fork
<jeromegn>
maybe the implementation changed since that gist was posted
<Yxhuvud>
if you don't notice improvement, have you verified that you are hitting all your ports?
<jeromegn>
I'm running 4 x wrk on 4 different ports and all programs seems to be getting requests. but running 4x wrk and 4x server + 4x clients might also be using all my CPU time and making it hard to see improvements
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<tilpner>
I don't have Crystal installed right now (and there's no package), so I can only look at it. I didn't see anything obviously broken, but that's not very helpful...
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