[Solved] Slow build time (inc HMR)

performance
1

Hi All,

I’m just posting this just in case it helps anyone else out, as I managed to ‘fix’ the issue.

My issue: Slow build times in the Dev environment.

The problem was really slowing my development as I had gotten really used to the hot module replacement feature where I would iterate on code, save and see the results in the browser pretty much immediately.

I’m using a Mac and React for my project.

For no reason I could think of, one day build times increased dramatically. I put up with it for a while, but it was getting more and more frustrating, so I decided to do something about it.

I looked through my code, made sure all my 3rd party code was up to date, restarted my machine, even did a meteor reset. None of which worked.

I then saw the Environment variable you can set that will give you a verbose output when meteor is building. So I gave that a go to see what was causing the issue.

Basically run: METEOR_PROFILE=1 meteor --settings settings.json
(no need for the settings bit, it’s just that I have some dev env. settings).

On initial build, I get a load of info.
On file change, I get another (smaller) dump of info.

Here’s the funny thing though - my builds have sped up again!!
I quit meteor and re-run without the profiler on, and build speeds are still fast.

So, something about running with the profiler on has ‘cleared out’ whatever was causing my slow builds.

Like I said, I don’t really know why they started in the first place as I had only changed a few lines of my code and not installed or updated anything. I had tried all sorts before trying the profiler too.

I’m curious to hear if other people have the same problem and this little ‘trick’ cured it for them too…

2

Hello,
For about 10 days my builds in development are longer (nothing has really changed in my mac or in my app). I try your trick but this had no effect for me…

3

That’s a shame. Good luck with finding your issue!

4

Hi, have you run with METEOR_PROFILE=1 to understand where the time has increased?

5

METEOR_PROFILE is not going to make any difference in next builds, it just enables more outputs.

This was just a coincidence.

Did you identify in each step your build were running slower?

6

I figured it was a coincidence, but thought I would mention it just in case.

The output let me see which bits of the build were the slowest, but because I didn’t have an output from a slow build and a fast build to compare, I’ve no idea if there was some specific part of the build that slowed down during the time I was having problems.

What I might do is do a build with the logging enabled and save it to a file somewhere, so if I get the problem again I can create a new log and compare it to the older one to see if a specific thing slowed.

Rob.

7

Hello Filipe,
I start my app with METEOR_PROFILE=1. Then I add a dummy space character in one of my file to trigger the rebuild and this is the output :

I took nearly 40 seconds.

| (#4) Profiling: ProjectContext prepareProjectForBuild
| 
| ProjectContext prepareProjectForBuild...........................844 ms (1)
| ├─ _initializeCatalog...........................................113 ms (1)
| │  └─ LocalCatalog#initialize...................................112 ms (1)
| │     ├─ addPatternsToList                                        1 ms (2)
| │     ├─ LocalCatalog#_computeEffectiveLocalPackages              1 ms (1)
| │     └─ LocalCatalog#_loadLocalPackages........................110 ms (1)
| │        ├─ PackageSource#initFromPackageDir for cfs-http-methods-fixed 4 ms (1)
| │        ├─ PackageSource#initFromPackageDir for meteor-tabular-fixed 1 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-activities 1 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-attachments 1 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-bom    1 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-categories-csv-export 1 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-comments 1 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-core   4 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-cron   1 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-custom-managed-service.2 ms (1)
| │        │  └─ sqlite query                                       1 ms (2)
| │        ├─ PackageSource#initFromPackageDir for rationalk-erp   10 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-events 2 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-fields.2 ms (1)
| │        │  └─ sqlite query                                       1 ms (2)
| │        ├─ PackageSource#initFromPackageDir for rationalk-license.1 ms (1)
| │        │  └─ sqlite query                                       1 ms (2)
| │        ├─ PackageSource#initFromPackageDir for rationalk-project-dashboard 1 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-project-overview 1 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-project-pictures 1 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-project-summary 1 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-project.3 ms (1)
| │        │  └─ runJavaScript package.js                           1 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-tags   2 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-tasks  2 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-tree-view 2 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-upload-logo 2 ms (1)
| │        ├─ PackageSource#initFromPackageDir for rationalk-users..3 ms (1)
| │        │  └─ sqlite query                                       2 ms (2)
| │        ├─ PackageSource#initFromPackageDir for twbs-bootstrap-modified.2 ms (1)
| │        │  └─ sqlite query                                       1 ms (2)
| │        └─ other LocalCatalog#_loadLocalPackages                19 ms
| ├─ _resolveConstraints...........................................18 ms (1)
| │  ├─ Select Package Versions.....................................8 ms (1)
| │  │  └─ new CS.Input                                             8 ms (1)
| │  ├─ files.writeFileAtomically                                   1 ms (1)
| │  └─ other _resolveConstraints                                   8 ms
| ├─ _downloadMissingPackages......................................41 ms (1)
| │  ├─ Isopack.readMetadataFromDirectory..........................31 ms (135)
| │  │  ├─ files.stat                                               1 ms (135)
| │  │  ├─ files.readFile                                          28 ms (135)
| │  │  └─ other Isopack.readMetadataFromDirectory                  2 ms
| │  └─ other _downloadMissingPackages                             10 ms
| └─ _buildLocalPackages..........................................672 ms (1)
|    ├─ _ensurePackageLoaded(accounts-base)                         2 ms (1)
|    ├─ _ensurePackageLoaded(ajduke:bootstrap-tagsinput)............2 ms (1)
|    │  └─ _ensurePackageLoaded(twbs:bootstrap).....................2 ms (1)
|    │     └─ IsopackCache Build local isopack                      1 ms (1)
|    ├─ _ensurePackageLoaded(aldeed:tabular)........................3 ms (1)
|    │  ├─ IsopackCache Build local isopack                         1 ms (1)
|    │  └─ other _ensurePackageLoaded(aldeed:tabular)               1 ms
|    ├─ _ensurePackageLoaded(rationalk:activities)................612 ms (1)
|    │  ├─ _ensurePackageLoaded(rationalk:core).....................7 ms (1)
|    │  │  └─ IsopackCache Build local isopack......................6 ms (1)
|    │  │     ├─ Isopack#getMergedWatchSet                          1 ms (2)
|    │  │     ├─ watch.isUpToDate...................................4 ms (1)
|    │  │     │  ├─ files.readdirWithTypes                          3 ms (20)
|    │  │     │  └─ other watch.isUpToDate                          1 ms
|    │  │     └─ other IsopackCache Build local isopack             1 ms
|    │  ├─ _ensurePackageLoaded(rationalk:fields)...................3 ms (1)
|    │  │  ├─ _ensurePackageLoaded(rationalk:settings)..............1 ms (1)
|    │  │  │  └─ IsopackCache Build local isopack                   1 ms (1)
|    │  │  └─ IsopackCache Build local isopack                      1 ms (1)
|    │  ├─ _ensurePackageLoaded(rationalk:erp)....................601 ms (1)
|    │  │  ├─ _ensurePackageLoaded(rationalk:contacts)..............2 ms (1)
|    │  │  │  └─ IsopackCache Build local isopack                   2 ms (1)
|    │  │  ├─ _ensurePackageLoaded(rationalk:meeting-minutes)       1 ms (1)
|    │  │  └─ IsopackCache Build local isopack....................596 ms (1)
|    │  │     ├─ Isopack#getMergedWatchSet                          2 ms (2)
|    │  │     ├─ files.readFile                                     1 ms (1)
|    │  │     ├─ compiler.compile(rationalk:erp)..................231 ms (1)
|    │  │     │  └─ compileUnibuild (rationalk:erp)...............231 ms (3)
|    │  │     │     ├─ Isopack#getUnibuildAtArch                    2 ms (252)
|    │  │     │     ├─ PackageSource#_findSources for os...........29 ms (1)
|    │  │     │     │  ├─ _realpath                                 3 ms (69)
|    │  │     │     │  ├─ files.stat                                9 ms (69)
|    │  │     │     │  ├─ safeWatcher.watch                         2 ms (138)
|    │  │     │     │  ├─ files.readdirWithTypes                    7 ms (138)
|    │  │     │     │  └─ other PackageSource#_findSources for os   8 ms
|    │  │     │     ├─ optimistic readFile........................131 ms (838)
|    │  │     │     │  ├─ files.readFile                          130 ms (838)
|    │  │     │     │  └─ other optimistic readFile                 2 ms
|    │  │     │     ├─ safeWatcher.watch                            2 ms (839)
|    │  │     │     ├─ PackageSource#_findSources for web.browser..12 ms (1)
|    │  │     │     │  ├─ _realpath                                 1 ms (69)
|    │  │     │     │  ├─ files.readdirWithTypes                    6 ms (138)
|    │  │     │     │  └─ other PackageSource#_findSources for web.browser 5 ms
|    │  │     │     ├─ PackageSource#_findSources for web.browser.legacy.9 ms (1)
|    │  │     │     │  ├─ files.readdirWithTypes                    5 ms (138)
|    │  │     │     │  └─ other PackageSource#_findSources for web.browser.legacy 3 ms
|    │  │     │     └─ other compileUnibuild (rationalk:erp)       46 ms
|    │  │     ├─ compiler.lint(rationalk:erp)                       2 ms (1)
|    │  │     ├─ Isopack#saveToPath...............................352 ms (1)
|    │  │     │  ├─ files.stat                                     25 ms (624)
|    │  │     │  ├─ files.mkdir                                    12 ms (208)
|    │  │     │  ├─ Builder#write.................................269 ms (2183)
|    │  │     │  │  ├─ Builder#_ensureDirectory                     6 ms (2183)
|    │  │     │  │  ├─ sha1                                        18 ms (2183)
|    │  │     │  │  ├─ files.writeFile                            227 ms (2183)
|    │  │     │  │  └─ other Builder#write                         18 ms
|    │  │     │  └─ other Isopack#saveToPath                       43 ms
|    │  │     └─ other IsopackCache Build local isopack             6 ms
|    │  └─ IsopackCache Build local isopack                         1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:category-csv-export)         1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:comments)                    1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:docs-rights).................2 ms (1)
|    │  └─ _ensurePackageLoaded(rationalk:project)..................1 ms (1)
|    │     └─ IsopackCache Build local isopack                      1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:gantt).......................2 ms (1)
|    │  ├─ _ensurePackageLoaded(rationalk:tasks)                    1 ms (1)
|    │  └─ IsopackCache Build local isopack.........................1 ms (1)
|    │     └─ watch.isUpToDate                                      1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:kanban)......................1 ms (1)
|    │  └─ IsopackCache Build local isopack                         1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:prices-import)...............1 ms (1)
|    │  └─ IsopackCache Build local isopack                         1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:production-orders)...........1 ms (1)
|    │  └─ IsopackCache Build local isopack.........................1 ms (1)
|    │     └─ watch.isUpToDate                                      1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:project-accounting)..........2 ms (1)
|    │  └─ IsopackCache Build local isopack.........................1 ms (1)
|    │     └─ watch.isUpToDate                                      1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:project-import)..............1 ms (1)
|    │  └─ IsopackCache Build local isopack                         1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:project-pictures)............1 ms (1)
|    │  └─ IsopackCache Build local isopack.........................1 ms (1)
|    │     └─ watch.isUpToDate                                      1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:project-risks)               1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:tasks-import)................1 ms (1)
|    │  └─ IsopackCache Build local isopack                         1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:tree-view)...................2 ms (1)
|    │  └─ IsopackCache Build local isopack.........................2 ms (1)
|    │     └─ watch.isUpToDate                                      1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:user-signatures)             1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:users).......................2 ms (1)
|    │  └─ IsopackCache Build local isopack.........................2 ms (1)
|    │     └─ watch.isUpToDate                                      1 ms (1)
|    ├─ _ensurePackageLoaded(rationalk:users-roles-import)..........2 ms (1)
|    │  └─ IsopackCache Build local isopack                         1 ms (1)
|    └─ other _buildLocalPackages                                   4 ms
| 
| Top leaves:
| files.writeFile............................................228 ms (2189)
| files.readFile.............................................159 ms (975)
| 
| (#4) Total: 844 ms (ProjectContext prepareProjectForBuild)
| 
| (#5) Profiling: Rebuild App
| 
| files.stat                                                        0 ms (1)
| files.unwatchFile                                                 1 ms (184)
| Rebuild App..................................................45,077 ms (1)
| └─ bundler.bundle............................................45,077 ms (1)
|    ├─ initFromAppDir                                              1 ms (1)
|    ├─ compiler.compile(the app)..............................42,598 ms (1)
|    │  └─ compileUnibuild (the app)...........................42,598 ms (3)
|    │     ├─ Isopack#getUnibuildAtArch                             2 ms (516)
|    │     ├─ PackageSource#_findSources for os                     4 ms (1)
|    │     ├─ files.readdirWithTypes                               13 ms (248)
|    │     ├─ _realpath.............................................3 ms (245)
|    │     │  ├─ files.lstat                                        2 ms (245)
|    │     │  └─ other _realpath                                    1 ms
|    │     ├─ legacy handler (.i18n.json)......................42,192 ms (15)
|    │     │  ├─ sha1                                               2 ms (15)
|    │     │  └─ other legacy handler (.i18n.json)             42,191 ms
|    │     ├─ PackageSource#_findSources for web.browser            3 ms (1)
|    │     └─ other compileUnibuild (the app)                     379 ms
|    ├─ compiler.lint(the app)                                      2 ms (1)
|    ├─ bundler.bundle..makeClientTarget........................2,290 ms (1)
|    │  └─ Target#make..........................................2,290 ms (1)
|    │     ├─ Isopack#getUnibuildAtArch                            14 ms (13812)
|    │     ├─ Target#_runCompilerPlugins..........................125 ms (1)
|    │     │  ├─ Isopack#getUnibuildAtArch                         22 ms (25626)
|    │     │  ├─ plugin ecmascript                                 13 ms (1)
|    │     │  ├─ plugin meteor                                      2 ms (1)
|    │     │  ├─ plugin templating-compiler........................32 ms (1)
|    │     │  │  ├─ files.readFile                                  2 ms (57)
|    │     │  │  └─ other plugin templating-compiler               30 ms
|    │     │  ├─ plugin coffeescript                                2 ms (1)
|    │     │  ├─ plugin zodern:meteor-package-versions              1 ms (1)
|    │     │  └─ other Target#_runCompilerPlugins                  52 ms
|    │     ├─ Target#_emitResources.............................1,988 ms (1)
|    │     │  ├─ PackageSourceBatch.computeJsOutputFilesMap.......493 ms (1)
|    │     │  │  ├─ sha1                                            3 ms (1247)
|    │     │  │  ├─ ImportScanner#getAbsModuleId                   24 ms (5042)
|    │     │  │  ├─ ImportScanner#realPath                         41 ms (3796)
|    │     │  │  ├─ ImportScanner#scanImports for modules           2 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for ecmascript-runtime-client 4 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for random            3 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for ddp-client        1 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for minimongo         2 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for blaze             2 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for ostrio:files      1 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for aldeed:tabular....3 ms (1)
|    │     │  │  │  └─ ImportScanner#readFile                       1 ms (2)
|    │     │  │  ├─ ImportScanner#scanImports for matb33:collection-hooks 1 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:core...27 ms (1)
|    │     │  │  │  ├─ Babel.compile                                6 ms (149)
|    │     │  │  │  ├─ ImportScanner#findImportedModuleIdentifiers..6 ms (287)
|    │     │  │  │  │  ├─ sha1                                      3 ms (574)
|    │     │  │  │  │  └─ other ImportScanner#findImportedModuleIdentifiers 3 ms
|    │     │  │  │  └─ other ImportScanner#scanImports for rationalk:core 14 ms
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:settings 3 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:fields.11 ms (1)
|    │     │  │  │  ├─ Babel.compile                                3 ms (63)
|    │     │  │  │  ├─ ImportScanner#findImportedModuleIdentifiers..3 ms (118)
|    │     │  │  │  │  ├─ sha1                                      1 ms (236)
|    │     │  │  │  │  └─ other ImportScanner#findImportedModuleIdentifiers 1 ms
|    │     │  │  │  └─ other ImportScanner#scanImports for rationalk:fields 5 ms
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:meeting-minutes.4 ms (1)
|    │     │  │  │  ├─ ImportScanner#findImportedModuleIdentifiers  1 ms (41)
|    │     │  │  │  └─ other ImportScanner#scanImports for rationalk:meeting-minutes 2 ms
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:rh-vacation-requests 2 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:erp....95 ms (1)
|    │     │  │  │  ├─ Babel.compile                               47 ms (357)
|    │     │  │  │  ├─ ImportScanner#findImportedModuleIdentifiers.15 ms (663)
|    │     │  │  │  │  ├─ sha1                                      7 ms (1326)
|    │     │  │  │  │  └─ other ImportScanner#findImportedModuleIdentifiers 9 ms
|    │     │  │  │  ├─ ImportScanner#resolve                        2 ms (215)
|    │     │  │  │  └─ other ImportScanner#scanImports for rationalk:erp 31 ms
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:custom-managed-service.11 ms (1)
|    │     │  │  │  ├─ Babel.compile                                2 ms (56)
|    │     │  │  │  ├─ ImportScanner#findImportedModuleIdentifiers  4 ms (109)
|    │     │  │  │  ├─ ImportScanner#resolve                        1 ms (171)
|    │     │  │  │  └─ other ImportScanner#scanImports for rationalk:custom-managed-service 4 ms
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:custom-reactolab 2 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:kpi     1 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:inventory 1 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:activities.11 ms (1)
|    │     │  │  │  ├─ Babel.compile                                2 ms (59)
|    │     │  │  │  ├─ ImportScanner#findImportedModuleIdentifiers..4 ms (115)
|    │     │  │  │  │  ├─ sha1                                      1 ms (230)
|    │     │  │  │  │  └─ other ImportScanner#findImportedModuleIdentifiers 2 ms
|    │     │  │  │  └─ other ImportScanner#scanImports for rationalk:activities 5 ms
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:production-orders 3 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:project.12 ms (1)
|    │     │  │  │  ├─ Babel.compile                                5 ms (72)
|    │     │  │  │  ├─ ImportScanner#findImportedModuleIdentifiers..3 ms (142)
|    │     │  │  │  │  ├─ sha1                                      1 ms (284)
|    │     │  │  │  │  └─ other ImportScanner#findImportedModuleIdentifiers 1 ms
|    │     │  │  │  └─ other ImportScanner#scanImports for rationalk:project 4 ms
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:project-calendars 3 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:project-resources 2 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:project-dashboard.7 ms (1)
|    │     │  │  │  ├─ Babel.compile                                2 ms (50)
|    │     │  │  │  ├─ ImportScanner#findImportedModuleIdentifiers..2 ms (102)
|    │     │  │  │  │  └─ sha1                                      1 ms (204)
|    │     │  │  │  └─ other ImportScanner#scanImports for rationalk:project-dashboard 3 ms
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:categories 2 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:receipts 2 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:project-accounting 3 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:project-risks 1 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:tasks..10 ms (1)
|    │     │  │  │  ├─ Babel.compile                                2 ms (61)
|    │     │  │  │  ├─ ImportScanner#findImportedModuleIdentifiers..3 ms (121)
|    │     │  │  │  │  ├─ sha1                                      1 ms (242)
|    │     │  │  │  │  └─ other ImportScanner#findImportedModuleIdentifiers 1 ms
|    │     │  │  │  └─ other ImportScanner#scanImports for rationalk:tasks 5 ms
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:gantt   2 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:kanban..4 ms (1)
|    │     │  │  │  ├─ Babel.compile                                1 ms (34)
|    │     │  │  │  ├─ ImportScanner#findImportedModuleIdentifiers  1 ms (66)
|    │     │  │  │  └─ other ImportScanner#scanImports for rationalk:kanban 2 ms
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:tags    4 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:attachments.10 ms (1)
|    │     │  │  │  ├─ Babel.compile                                2 ms (53)
|    │     │  │  │  ├─ ImportScanner#findImportedModuleIdentifiers  2 ms (103)
|    │     │  │  │  └─ other ImportScanner#scanImports for rationalk:attachments 6 ms
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:users...5 ms (1)
|    │     │  │  │  ├─ Babel.compile                                1 ms (40)
|    │     │  │  │  ├─ ImportScanner#findImportedModuleIdentifiers  1 ms (74)
|    │     │  │  │  └─ other ImportScanner#scanImports for rationalk:users 2 ms
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:comments 2 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:journal 1 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:bpm     1 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for rationalk:ext     3 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for montiapm:agent    2 ms (1)
|    │     │  │  ├─ ImportScanner#scanImports for the app...........3 ms (1)
|    │     │  │  │  ├─ ImportScanner#findImportedModuleIdentifiers  1 ms (8)
|    │     │  │  │  └─ other ImportScanner#scanImports for the app  2 ms
|    │     │  │  ├─ ImportScanner#scanMissingModules for the app...67 ms (2)
|    │     │  │  │  ├─ ImportScanner#resolve.......................12 ms (1013)
|    │     │  │  │  │  ├─ ImportScanner#addPkgJsonToOutput          6 ms (468)
|    │     │  │  │  │  └─ other ImportScanner#resolve               6 ms
|    │     │  │  │  ├─ ImportScanner#getAbsModuleId                 2 ms (437)
|    │     │  │  │  ├─ ImportScanner#realPath                       7 ms (437)
|    │     │  │  │  ├─ ImportScanner#readFile                      19 ms (438)
|    │     │  │  │  ├─ DefaultHandlers.js...........................3 ms (430)
|    │     │  │  │  │  ├─ reifyCompileWithCache                     1 ms (430)
|    │     │  │  │  │  └─ other DefaultHandlers.js                  2 ms
|    │     │  │  │  ├─ ImportScanner#findImportedModuleIdentifiers  1 ms (444)
|    │     │  │  │  └─ other ImportScanner#scanMissingModules for the app 24 ms
|    │     │  │  ├─ ImportScanner#scanMissingModules for socket-stream-client 2 ms (1)
|    │     │  │  ├─ PackageSourceBatch._watchOutputFiles            3 ms (1)
|    │     │  │  └─ other PackageSourceBatch.computeJsOutputFilesMap 58 ms
|    │     │  ├─ PackageSourceBatch#getResources................1,301 ms (192)
|    │     │  │  ├─ PackageSourceBatch#_linkJS..................1,300 ms (192)
|    │     │  │  │  ├─ sha1                                         9 ms (572)
|    │     │  │  │  ├─ linker.fullLink..........................1,247 ms (1)
|    │     │  │  │  │  ├─ linker Module#getPrelinkedFiles.........527 ms (1)
|    │     │  │  │  │  │  ├─ linker File#getPrelinkedOutput       251 ms (715)
|    │     │  │  │  │  │  ├─ getPrelinkedFiles toStringWithSourceMap 228 ms (1)
|    │     │  │  │  │  │  └─ other linker Module#getPrelinkedFiles 47 ms
|    │     │  │  │  │  ├─ linker Module#computeAssignedVariables..713 ms (1)
|    │     │  │  │  │  │  ├─ linker File#computeAssignedVariables 708 ms (715)
|    │     │  │  │  │  │  └─ other linker Module#computeAssignedVariables 5 ms
|    │     │  │  │  │  └─ other linker.fullLink                     7 ms
|    │     │  │  │  ├─ files.rm_recursive                           8 ms (1)
|    │     │  │  │  ├─ files.writeFileAtomically...................19 ms (1)
|    │     │  │  │  │  └─ files.writeFile                          18 ms (1)
|    │     │  │  │  └─ other PackageSourceBatch#_linkJS            18 ms
|    │     │  │  └─ other PackageSourceBatch#getResources           1 ms
|    │     │  ├─ sha512                                            19 ms (1157)
|    │     │  ├─ sha1                                               3 ms (1213)
|    │     │  └─ other Target#_emitResources                      172 ms
|    │     ├─ Target#minifyJs......................................71 ms (1)
|    │     │  ├─ sha512                                            33 ms (193)
|    │     │  └─ other Target#minifyJs                             37 ms
|    │     ├─ ClientTarget#minifyCss................................2 ms (1)
|    │     │  └─ minifyCssFiles                                     2 ms (1)
|    │     ├─ sha512                                               50 ms (1350)
|    │     ├─ sha1                                                  3 ms (1350)
|    │     └─ other Target#make                                    37 ms
|    ├─ bundler writeTargetToPath.................................180 ms (1)
|    │  └─ ClientTarget#write.....................................178 ms (1)
|    │     ├─ sha1                                                  1 ms (638)
|    │     ├─ bundler writeFile....................................10 ms (1988)
|    │     │  ├─ Builder#_ensureDirectory                           6 ms (1988)
|    │     │  └─ other bundler writeFile                            4 ms
|    │     ├─ Builder#write........................................32 ms (1270)
|    │     │  ├─ Builder#_ensureDirectory                           5 ms (1270)
|    │     │  ├─ sha1                                              20 ms (1270)
|    │     │  ├─ files.writeFile                                    1 ms (1)
|    │     │  └─ other Builder#write                                5 ms
|    │     └─ other ClientTarget#write                            134 ms
|    └─ other bundler.bundle                                        5 ms
| 
| Top leaves:
| other legacy handler (.i18n.json).......................42,191 ms (15)
| linker File#computeAssignedVariables.......................708 ms (715)
| other compileUnibuild (the app)............................379 ms (3)
| linker File#getPrelinkedOutput.............................251 ms (715)
| getPrelinkedFiles toStringWithSourceMap....................228 ms (1)
| other Target#_emitResources................................172 ms (1)
| other ClientTarget#write...................................134 ms (1)
| sha512.....................................................103 ms (2749)
| 
| (#5) Total: 45,078 ms (Rebuild App)
| 
=> Client modified -- refreshing
=> Finished delayed build of web.browser.legacy in 1384ms

I see some strange 42 seconds with .i18n.json files … this can be a hint
(and I remember I add a new language to the app around 10 days ago when it started to be slower)

Is this normal to have this i18n translation strings impacting my build ? Or they should be loaded by the tap:18n package later by the app ?

8

I believe you are discussing this issue in more detail here.

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