Java Version:
java version "9.0.4"
Java(TM) SE Runtime Environment (build 9.0.4+11)
Java HotSpot(TM) 64-Bit Server VM (build 9.0.4+11, mixed mode)
System: Arch Linux
<pre>
<code>
user=> (require '[clj-memory-meter.core :as mm])
CompilerException java.lang.reflect.InvocationTargetException,
compiling:(clj_memory_meter/core.clj:50:1)
user=> *e
#error {
:cause "Can not attach to current VM"
:via
[{:type clojure.lang.Compiler$CompilerException
:message "java.lang.reflect.InvocationTargetException,
compiling:(clj_memory_meter/core.clj:50:1)"
:at [clojure.lang.Compiler load "Compiler.java" 7391]}
{:type java.lang.reflect.InvocationTargetException
:message nil
:at [jdk.internal.reflect.NativeMethodAccessorImpl invoke0
"NativeMethodAccessorImpl.java" -2]}
{:type java.io.IOException
:message "Can not attach to current VM"
:at [sun.tools.attach.HotSpotVirtualMachine <init>
"HotSpotVirtualMachine.java" 75]}]
:trace
[[sun.tools.attach.HotSpotVirtualMachine <init>
"HotSpotVirtualMachine.java" 75]
[sun.tools.attach.VirtualMachineImpl <init> "VirtualMachineImpl.java" 56]
[sun.tools.attach.AttachProviderImpl attachVirtualMachine
"AttachProviderImpl.java" 58]
[com.sun.tools.attach.VirtualMachine attach "VirtualMachine.java" 207]
[jdk.internal.reflect.NativeMethodAccessorImpl invoke0
"NativeMethodAccessorImpl.java" -2]
[jdk.internal.reflect.NativeMethodAccessorImpl invoke
"NativeMethodAccessorImpl.java" 62]
[jdk.internal.reflect.DelegatingMethodAccessorImpl invoke
"DelegatingMethodAccessorImpl.java" 43]
[java.lang.reflect.Method invoke "Method.java" 564]
[clj_memory_meter.core$mk_vm invokeStatic "core.clj" 42]
[clj_memory_meter.core$mk_vm invoke "core.clj" 38]
[clj_memory_meter.core$load_jamm_agent invokeStatic "core.clj" 45]
[clj_memory_meter.core$load_jamm_agent invoke "core.clj" 44]
[clj_memory_meter.core$eval1822 invokeStatic "core.clj" 50]
[clj_memory_meter.core$eval1822 invoke "core.clj" 50]
[clojure.lang.Compiler eval "Compiler.java" 6927]
[clojure.lang.Compiler load "Compiler.java" 7379]
[clojure.lang.RT loadResourceScript "RT.java" 372]
[clojure.lang.RT loadResourceScript "RT.java" 363]
[clojure.lang.RT load "RT.java" 453]
[clojure.lang.RT load "RT.java" 419]
[clojure.core$load$fn__5677 invoke "core.clj" 5893]
[clojure.core$load invokeStatic "core.clj" 5892]
[clojure.core$load doInvoke "core.clj" 5876]
[clojure.lang.RestFn invoke "RestFn.java" 408]
[clojure.core$load_one invokeStatic "core.clj" 5697]
[clojure.core$load_one invoke "core.clj" 5692]
[clojure.core$load_lib$fn__5626 invoke "core.clj" 5737]
[clojure.core$load_lib invokeStatic "core.clj" 5736]
[clojure.core$load_lib doInvoke "core.clj" 5717]
[clojure.lang.RestFn applyTo "RestFn.java" 142]
[clojure.core$apply invokeStatic "core.clj" 648]
[clojure.core$load_libs invokeStatic "core.clj" 5774]
[clojure.core$load_libs doInvoke "core.clj" 5758]
[clojure.lang.RestFn applyTo "RestFn.java" 137]
[clojure.core$apply invokeStatic "core.clj" 648]
[clojure.core$require invokeStatic "core.clj" 5796]
[clojure.core$require doInvoke "core.clj" 5796]
[clojure.lang.RestFn invoke "RestFn.java" 408]
[user$eval1800 invokeStatic nil 1]
[user$eval1800 invoke nil 1]
[clojure.lang.Compiler eval "Compiler.java" 6927]
[clojure.lang.Compiler eval "Compiler.java" 6890]
[clojure.core$eval invokeStatic "core.clj" 3105]
[clojure.core$eval invoke "core.clj" 3101]
[clojure.main$repl$read_eval_print__7408$fn__7411 invoke "main.clj" 240]
[clojure.main$repl$read_eval_print__7408 invoke "main.clj" 240]
[clojure.main$repl$fn__7417 invoke "main.clj" 258]
[clojure.main$repl invokeStatic "main.clj" 258]
[clojure.main$repl doInvoke "main.clj" 174]
[clojure.lang.RestFn invoke "RestFn.java" 1523]
[clojure.tools.nrepl.middleware.interruptible_eval$evaluate$fn__5508
invoke "interruptible_eval.clj" 87]
[clojure.lang.AFn applyToHelper "AFn.java" 152]
[clojure.lang.AFn applyTo "AFn.java" 144]
[clojure.core$apply invokeStatic "core.clj" 646]
[clojure.core$with_bindings_STAR_ invokeStatic "core.clj" 1881]
[clojure.core$with_bindings_STAR_ doInvoke "core.clj" 1881]
[clojure.lang.RestFn invoke "RestFn.java" 425]
[clojure.tools.nrepl.middleware.interruptible_eval$evaluate invokeStatic
"interruptible_eval.clj" 85]
[clojure.tools.nrepl.middleware.interruptible_eval$evaluate invoke
"interruptible_eval.clj" 55]
[clojure.tools.nrepl.middleware.interruptible_eval$interruptible_eval$fn__5553$fn__5556
invoke "interruptible_eval.clj" 224]
[clojure.tools.nrepl.middleware.interruptible_eval$run_next$fn__5548
invoke "interruptible_eval.clj" 192]
[clojure.lang.AFn run "AFn.java" 22]
[java.util.concurrent.ThreadPoolExecutor runWorker
"ThreadPoolExecutor.java" 1167]
[java.util.concurrent.ThreadPoolExecutor$Worker run
"ThreadPoolExecutor.java" 641]
[java.lang.Thread run "Thread.java" 844]]}
user=>
</code>
</pre>
[stardiviner] <Hack this world!> GPG key ID: 47C32433
IRC(freeenode): stardiviner Twitter: @numbchild
Key fingerprint = 9BAA 92BC CDDD B9EF 3B36 CB99 B8C4 B8E5 47C3 2433
Blog: http://stardiviner.github.io/
On Wed, Mar 7, 2018 at 3:12 PM, Juraj Martinka <juma...@gmail.com> wrote:
> Works great for me. Thank you very much for publishing this!
> Previously, I tried to use jol-cli
> <http://openjdk.java.net/projects/code-tools/jol/>but it was much more
> cumbersome.
>
>
> On Monday, 5 March 2018 11:56:20 UTC+1, Alexander Yakushev wrote:
>>
>> I'm happy to release the first version of clj-memory-meter
>> <https://github.com/clojure-goes-fast/clj-memory-meter>. It's a thin
>> wrapper around jamm <https://github.com/jbellis/jamm>which allows
>> measuring how much space an arbitrary object occupies. clj-memory-meter is
>> usable from the REPL, can be loaded on-demand, and doesn't require to
>> launch JVM with special parameters.
>>
>> Blog post with a little more detail and usage examples:
>> http://clojure-goes-fast.com/blog/introspection-tool-object-memory-meter/
>>
>> To start, using add [com.clojure-goes-fast/clj-memory-meter "0.1.0"], or
>> run the following with clj:
>>
>> $ clj -Sdeps "{:deps {com.clojure-goes-fast/clj-memory-meter
>> {:mvn/version \"0.1.0\"}}}"
>> Clojure 1.9.0
>>
>> ;; Nevermind the warning, it doesn't break the library.
>> user=> (require '[clj-memory-meter.core :as mm])
>> objc[59881]: Class JavaLaunchHelper is implemented in both
>> /Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/bin/java
>> (0x1089814c0) and /Library/Java/JavaVirtualMachi
>> nes/jdk1.8.0_102.jdk/Contents/Home/jre/lib/libinstrument.dylib
>> (0x10d9dc4e0). One of the two will be used. Which one is undefined.
>> nil
>>
>> user=> (mm/measure (vec (range 100000)))
>> "2.8 MB"
>>
>> user=> (mm/measure (list 1 2 3 4 5) :debug true)
>>
>> root [clojure.lang.PersistentList] 320 bytes (40 bytes)
>> |
>> +--_first [java.lang.Long] 24 bytes (24 bytes)
>> |
>> +--_rest [clojure.lang.PersistentList] 256 bytes (40 bytes)
>> |
>> +--_first [java.lang.Long] 24 bytes (24 bytes)
>> |
>> +--_rest [clojure.lang.PersistentList] 192 bytes (40 bytes)
>> |
>> +--_first [java.lang.Long] 24 bytes (24 bytes)
>> |
>> +--_rest [clojure.lang.PersistentList] 128 bytes (40 bytes)
>> |
>> +--_first [java.lang.Long] 24 bytes (24 bytes)
>> |
>> +--_rest [clojure.lang.PersistentList] 64 bytes (40 bytes)
>> |
>> +--_first [java.lang.Long] 24 bytes (24 bytes)
>>
>> "320 B"
>>
>> I hope this library will be useful for you. Enjoy!
>>
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