Do you have any way of determining the performance difference of writing to a fie vs writing to stdout?
Ralph > On Aug 6, 2018, at 8:47 AM, Rob Tompkins <chtom...@gmail.com> wrote: > > I find myself writing to either standard out or a file. When I write to a > file in docker I tend to “share” that file with the filesystem on the docker > host. But, I prefer writing to standard our and appending that to a file on > the machine as it deals with less of the underlying filesystem networking > (which is cumbersome). > > Don’t know if that helps. > > -Rob > >> On Aug 6, 2018, at 11:44 AM, Ralph Goers <ralph.go...@dslextreme.com> wrote: >> >> I don’t know. That is why I am asking if you guys have tried anything with >> Docker containers. Writing to stdout is a “best practice” so I am just >> trying to validate whether that is good or bad advice or what needs to be >> done to make it work well. Or if Log4j should implement a Docker plugin to >> write to, or something else. >> >>> On Aug 6, 2018, at 8:28 AM, Gary Gregory <garydgreg...@gmail.com> wrote: >>> >>> Can't you just configure the console appender with a large-ish buffer and >>> remove the bottleneck? >>> >>> Gary >>> >>> On Mon, Aug 6, 2018 at 8:55 AM Ralph Goers <ralph.go...@dslextreme.com> >>> wrote: >>> >>>> So that begs the question, when logging to stdout in a container is a >>>> console attached? i.e. can you normally view the output like you could in a >>>> regular VM or is it all redirected somewhere else? I haven’t worked much >>>> with Docker yet so I am afraid I don’t know the answer. >>>> >>>> Ralph >>>> >>>>> On Aug 6, 2018, at 6:40 AM, Remko Popma <remko.po...@gmail.com> wrote: >>>>> >>>>> It may be to do with whether a tty is attached and how fast it is: >>>> https://stackoverflow.com/questions/3857052/why-is-printing-to-stdout-so-slow-can-it-be-sped-up >>>>> >>>>> (Shameless plug) Every java main() method deserves http://picocli.info >>>>> >>>>>> On Aug 6, 2018, at 4:21, Ralph Goers <ralph.go...@dslextreme.com> >>>> wrote: >>>>>> >>>>>> Our performance page shows that logging to the console is extremely >>>> slow. Yet one of the “best practices” for containers is to have the >>>> applications log to STDOUT or STDERR. This leads me to two questions: >>>>>> Is the performance of writing to STDOUT just as bad in a container? I >>>> have no reason to believe it wouldn’t be but have no evidence. >>>>>> Assuming performance is poor what are the realistic alternatives? Is >>>> there something more Log4j needs to be doing to play well in a cloud >>>> environment? >>>>>> >>>>>> Ralph >>>> >>>> >>>> >> >> > >
