My understanding is that, by default, CIDER loads quite a bit of middleware when it connects so that’s likely the cause of the slowdown. You can override the middleware to provide a more stripped-down experience (but you’ll lose a lot of CIDER’s functionality) – check the CIDER docs for that.
Sean Corfield -- (970) FOR-SEAN -- (904) 302-SEAN An Architect's View -- http://corfield.org/ "If you're not annoying somebody, you're not really alive." -- Margaret Atwood On 8/31/16, 10:28 AM, "Gregg Reynolds" <clojure@googlegroups.com on behalf of d...@mobileink.com> wrote: Hi, I'm having some trouble connecting from a Mac to an nREPL running on an Intel Edison. I'm using boot to launch the nREPL on the Edison; it's *very* slow to launch (~2 minutes 15 seconds), which is not too surprising since the Edison is a relatively constrained device (1 Mb RAM, Atom CPU at 500 MHz). But connecting to the nREPL with cider-connect is also painfully slow (~75 seconds). By contrast, connecting via ssh is quite fast. Does it make sense that connecting is so slow? I would think that once the JVM and Clojure are up and running connecting should not be so sluggish. I'm not sure where to direct this question which is why I'm posting to the general list. At first I thought is was a Cider problem but now I'm not so sure. Maybe its an nREPL issue? Any suggestions? I'm using Clojure 1.7. Would upgrading make any difference? Note that there are three ways to connect to an Edison. It has two USB ports; one functions as a serial line you can use to connect using screen, the other functions as an IP-over-USB line (192.168.2.15 on if usb0; this works out-of-the-box on OS X, might need some configuration on other platforms). If you connect it to a WiFI network you get a third IP on interface wlan0. If I cider-connect to edison2.local (I named my device 'edison2'), cider tries to establish a direct connection. If I cider-connect to 192.168.2.15 it tries direct connection; using WiFi IP (e.g. 192.168.1.206), cider tries to establish an ssh tunnel. In all cases I get the spinning beachball for well over a minute. I can cancel the spinning beachball so it isn't totally hung. Once a connection is established, the nREPL is quite snappy. ## Steps to reproduce the problem Connect to the Edison via the serial line (i.e. screen -L /dev/cu.usbserial... 115200 -l) and launch the nREPL using boot (details below). On the Mac host, open a simple clj file in Emacs, cider-connect (C-c M-c) using any of the hosts mentioned above. Thanks, Gregg ## Environment & Version information ### CIDER version information ``` ;; Connected to nREPL server - nrepl://localhost:8088 ;; CIDER 0.13.0 (California), nREPL 0.2.12 ;; Clojure 1.7.0, Java 1.8.0-internal ``` ### Boot version ~/.boot/profile.boot: (deftask cider "CIDER profile" [] (require 'boot.repl) (swap! @(resolve 'boot.repl/*default-dependencies*) concat '[[org.clojure/tools.nrepl "0.2.12"] [cider/cider-nrepl "0.13.0"] #_[refactor-nrepl "2.2.0"]]) (swap! @(resolve 'boot.repl/*default-middleware*) concat '[cider.nrepl/cider-middleware #_refactor-nrepl.middleware/wrap-refactor]) identity) Launch cmd: `$ boot cider repl` (this takes a long time, like a couple of minutes) nREPL startup msg: nREPL server started on port 8088 on host 127.0.0.1 - nrepl://127.0.0.1:8088 REPL-y 0.3.7, nREPL 0.2.12 Clojure 1.7.0 OpenJDK Server VM 1.8.0-internal-neck_2016_06_06_15_38-b00 ### Emacs version Emacs 24.5.1 (x86_64-apple-darwin13.4.0, NS apple-appkit-1265.21) clojure-mode-display-version: clojure-mode (version 5.5.2) ### Operating system Emacs running on OS X 10.11.5 nREPL running on Intel Edison: edison2:~/nrepl$ uname -a Linux edison2 3.10.98-poky-edison+ #1 SMP PREEMPT Mon Jun 6 14:32:08 PDT 2016 i686 GNU/Linux -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
