Hi Ömer,
It doesn't require Postgres, I just haven't cleaned up the dependencies. My
bad. :-(
I pushed the cleaned version.
However, noticed strange thing during testing of the cleaned package. There is
no leak any more. And the problem is that I can't reproduce it, not even with
previous commits.
Without "-T", it does use double+ the memory (12-14 MB) than with "-T" (<5 MB),
which is strange, but the memory doesn't grow any more.
Will do more testing in the next few days. The only thing I can think of now is
that I updated something in the environment.
So, unless you're curious, there's no need to waste your time. Thanks for the
offer, though. :-)
br,
vlatko
On 06/06/2019 12:22, Ömer Sinan Ağacan wrote:
Hi Vlatko,
Unless this is a side effect of calling getrusage() (perhaps it causes the OS to
update stats) I don't see how this is possible.
Your reproducer seems to require postgres so I'm unable to run it. If you can
provide a version that doesn't need postgres I can take a look.
Ömer
Vlatko Basic<vlatko.ba...@gmail.com>, 5 Haz 2019 Çar, 12:53 tarihinde
şunu yazdı:
Hello ghc-devs,
I wrote about this issue to haskell-cafe, but received no reply as of today, so
I'm hoping I could get some answer(s) here.
I wrote a small Servant server that communicates with the same other server(s).
When compiled without "-with-rtsopts=-T", I see in 'gnome-system-monitor' that
memory used by each server constantly growing.
I was investigating the issue, and found that it is (probably) not in my code,
but in one http call (Servant client call to the same server).
When I compile it with "-with-rtsopts=-T", the memory is constant and steady.
Tested on Arch Linux with Stack LTS 13.14.
If any one wants to test this, here are the steps: (server is standalone and
does not require any external services (like DB, Redis, etc) and uses just a few
MBs of RAM.)
$ hg clonehttps://bitbucket.org/vlatkoB/poomas && cd poomas && stack build
## open your system monitor
## open two terminals in 'poomas' dir and in one run
$ srvb.sh 5
## and in the other #
$ srvb.sh 6
## (5 and 6 represent port number added to 3000, i.e. 3005 and 3006)
## Notice that memory is steady, around 6 MB on my machine.
## In 'server/package.yaml' comment out the line 139 (#-with-rtsopts=-T)
$ stack build --force-dirty
## start those two servers again and see memory usage growing.
Can anyone shed some light what could be happening here?
Best regards,
vlatko
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