In OSX El Capitan, I am using Magit 20171026.217, Git 2.10.1 (Apple Git-78), Emacs 25.1.1, darwin.
In CentOS Release 6.6, I'm using Magit 20180903.2339, Git 2.13.1, Emacs 26.1, gnu/linux.
For the same 40 MByte git repo, the magit status buffer requires 4 seconds to appear in linux but only 0.5 seconds in Mac OS. There was a one-line change in one file in the linux repo.
In CentOS, my .emacs contains the following commands from the magit performance page and elsewhere:
;; https://magit.vc/manual/magit/Performance.html
(setq magit-refresh-status-buffer nil)
(setq magit-diff-highlight-indentation nil)
(setq magit-diff-highlight-trailing nil)
(setq magit-diff-paint-whitespace nil)
(setq magit-diff-highlight-hunk-body nil)
(setq magit-diff-refine-hunk nil)
(setq magit-revision-insert-related-refs nil)
(remove-hook 'magit-refs-sections-hook 'magit-insert-tags)
(remove-hook 'server-switch-hook 'magit-commit-diff)
(setq vc-handled-backends nil)
(setq auto-revert-buffer-list-filter
'magit-auto-revert-repository-buffers-p)
;; https://williambert.online/2015/11/How-I-made-Magit-fast-again/
(setq magit-commit-show-diff nil)
(setq magit-revert-buffers 1)
(setq magit-refresh-verbose 1)
I used this code to profile magit-status on linux and macOS:
(defun profile-magit ()
(elp-instrument-package "magit")
(elp-reset-all)
(magit-status "pathToRepo")
(elp-results))
(profile-magit)
The results are shown below, first for CentOS (bad) and then for MacOS (great).
Any suggestions on speeding up the CentOS performance are greatly appreciated.
PROFILING RESULTS ON CENTOS (very slow):
magit-status 1 4.637725058 4.637725058
magit-run-section-hook 2 4.633367778 2.316683889
magit-process-file 26 4.408109038 0.1695426553
magit-status-internal 1 4.3173727809 4.3173727809
magit-mode-setup 1 4.317356942 4.317356942
magit-mode-setup-internal 1 4.31735279 4.31735279
magit-refresh-buffer 1 3.95782774 3.95782774
magit-status-refresh-buffer 1 3.957227878 3.957227878
magit-git-insert 13 2.124903824 0.1634541403
magit-git-str 23 1.4826771669 0.0644642246
magit-insert-status-headers 1 1.127880501 1.127880501
magit-rev-parse-safe 20 1.093782861 0.0546891430
magit-insert-unpushed-to-upstream-or-recent 1 1.082952769 1.082952769
magit-git-string 14 1.0594253679 0.0756732405
magit-insert-headers 1 0.982247303 0.982247303
magit-git-wash 4 0.82460503 0.2061512575
magit-insert-recent-commits 1 0.783410273 0.783410273
magit-insert-log 2 0.63769903 0.318849515
magit-rev-verify 4 0.601661585 0.1504153962
magit-git-exit-code 3 0.6005712080 0.2001904026
magit-rev-parse 3 0.4716020800 0.1572006933
magit-log-wash-log 1 0.46797409 0.46797409
magit-insert-tags-header 1 0.389292032 0.389292032
magit-git-items 2 0.386998803 0.1934994015
magit-insert-staged-changes 1 0.359801993 0.359801993
magit-abbrev-length 1 0.31824761 0.31824761
magit-toplevel 21 0.317811276 0.0151338702
magit-insert-unpulled-from-upstream 1 0.314986998 0.314986998
magit-insert-head-branch-header 1 0.302152539 0.302152539
magit-git-success 2 0.294809955 0.1474049775
magit-rev-format 2 0.293499864 0.146749932
magit-insert-upstream-branch-header 1 0.29064293 0.29064293
magit-insert-untracked-files 1 0.242863067 0.242863067
magit-display-buffer 1 0.212477492 0.212477492
magit-bare-repo-p 1 0.201640107 0.201640107
magit-rev-parse-true 1 0.201567176 0.201567176
magit-git-true 1 0.201562606 0.201562606
magit-git-output 1 0.201557613 0.201557613
magit-get-current-tag 2 0.196021831 0.0980109155
magit-get-next-tag 1 0.193064518 0.193064518
magit-insert-unstaged-changes 1 0.187144843 0.187144843
magit-git-dir 11 0.1754272640 0.0159479330
magit-insert-merge-log 1 0.174901715 0.174901715
magit-merge-in-progress-p 1 0.174897354 0.174897354
magit-insert-stashes 1 0.159585508 0.159585508
magit-wash-sequence 3 0.1505684099 0.0501894699
magit-log-wash-rev 10 0.149665603 0.0149665603
magit-get-current-branch 8 0.1476631309 0.0184578913
magit-format-ref-labels 10 0.147321033 0.0147321032
magit-status-mode 1 0.146352289 0.146352289
magit-rev-ancestor-p 1 0.146086039 0.146086039
magit-get-all 18 0.145360679 0.0080755932
magit-config-get-from-cached-list 19 0.145263918 0.0076454693
magit-load-config-extensions 1 0.144793241 0.144793241
magit-display-buffer-traditional 1 0.107423347 0.107423347
magit-section-ident 147 0.0021125400 1.437...e-05
magit-mode 1 0.000829181 0.000829181
magit-diff-wash-diffs 1 0.000642034 0.000642034
magit-get 17 0.0006312269 3.713...e-05
magit--safe-default-directory 9 0.0006285869 6.984...e-05
magit-section 19 0.0006018359 3.167...e-05
magit-diff-wash-diff 1 0.000599268 0.000599268
magit-section-cached-visibility 22 0.000589903 2.681...e-05
magit-insert-heading 7 0.00055112 7.873...e-05
magit-diff-insert-file-section 1 0.000520999 0.000520999
magit-maybe-make-margin-overlay 9 0.00050706 5.634...e-05
magit-file-accessible-directory-p 9 0.000468549 5.2061e-05
magit-section-match 10 0.0004680669 4.680...e-05
magit-maybe-save-repository-buffers 1 0.000440343 0.000440343
magit-save-repository-buffers 1 0.000433461 0.000433461
magit-get-push-branch 5 0.000421858 8.43716e-05
magit-get-section 22 0.000419913 1.908...e-05
magit-process-environment 26 0.0003858840 1.484...e-05
magit-section-match-1 51 0.0003856660 7.562...e-06
magit-get-push-remote 5 0.0003759310 7.518...e-05
magit-rebase-in-progress-p 2 0.000323864 0.000161932
magit-section-show 7 0.000277453 3.963...e-05
magit-diff-wash-hunk 1 0.00026903 0.00026903
magit-insert-rebase-sequence 1 0.000250239 0.000250239
magit-insert-sequencer-sequence 1 0.00024326 0.00024326
magit-log-format-margin 10 0.0002284770 2.284...e-05
magit-mode-get-buffer 1 0.000188089 0.000188089
magit-get-upstream-branch 2 0.000178769 8.93845e-05
magit-bisect-in-progress-p 3 0.0001767080 5.890...e-05
magit--process-coding-system 26 0.0001568349 6.032...e-06
magit-insert-child-count 20 0.000139597 6.979...e-06
magit-diff-expansion-threshold 22 0.000138593 6.299...e-06
magit-insert-bisect-output 1 0.000132705 0.000132705
magit-process-git-arguments 26 0.000132603 5.100...e-06
magit-cherry-pick-in-progress-p 1 0.000122953 0.000122953
magit-insert-am-sequence 1 0.000115193 0.000115193
magit-revert-in-progress-p 1 0.000114903 0.000114903
magit-am-in-progress-p 1 0.000111797 0.000111797
magit-insert-unpushed-to-pushremote 1 0.00010976 0.00010976
magit-section-update-highlight 1 0.000108693 0.000108693
magit-section-match-assoc 5 0.000100528 2.01056e-05
magit-expand-git-file-name 11 9.6376e-05 8.761...e-06
magit-insert-push-branch-header 1 9.618e-05 9.618e-05
magit-make-margin-overlay 16 9.1406e-05 5.712875e-06
magit-delete-line 15 8.555...e-05 5.703...e-06
magit-preserve-section-visibility-cache 19 7.8316e-05 4.121...e-06
magit-insert-unpulled-from-pushremote 1 7.3261e-05 7.3261e-05
magit-file-section-p 22 7.145...e-05 3.248...e-06
magit-file-section 2 6.5891e-05 3.29455e-05
magit--age 10 6.1487e-05 6.1487e-06
magit--assert-default-directory 1 6.0568e-05 6.0568e-05
magit-section-match-2 45 4.7839e-05 1.063...e-06
magit-log-propertize-keywords 12 4.7763e-05 3.980...e-06
magit-diff-highlight 1 4.1871e-05 4.1871e-05
magit-section-goto-successor 1 3.9938e-05 3.9938e-05
magit-set-buffer-margin 1 3.2258e-05 3.2258e-05
magit-insert-bisect-rest 1 2.7742e-05 2.7742e-05
magit-hunk-section 1 2.7432e-05 2.7432e-05
magit-section-hide 2 2.6654e-05 1.3327e-05
magit-insert-bisect-log 1 2.4944e-05 2.4944e-05
magit-refresh-get-relative-position 1 2.3263e-05 2.3263e-05
magit-section-maybe-cache-visibility 9 2.139...e-05 2.377...e-06
magit-get-boolean 1 1.782e-05 1.782e-05
magit-margin-option 11 1.307...e-05 1.188...e-06
magit-process-unset-mode-line-error-status 1 1.2741e-05 1.2741e-05
magit-ignore-submodules-p 2 1.253e-05 6.265e-06
magit-diff-scope 1 1.0888e-05 1.0888e-05
magit-insert-diff-filter-header 1 1.0598e-05 1.0598e-05
magit-repository-local-get 1 9.41e-06 9.41e-06
magit-section-highlight 1 9.284e-06 9.284e-06
magit-current-section 5 8.803...e-06 1.760...e-06
magit-set-window-margin 1 7.655e-06 7.655e-06
magit-save-window-configuration 1 7.348e-06 7.348e-06
magit-diff-type 1 6.795e-06 6.795e-06
magit-maybe-set-dedicated 1 6.511e-06 6.511e-06
magit-repository-local-exists-p 1 5.645e-06 5.645e-06
magit-auto-revert-mode-enable-in-buffers 1 5.231e-06 5.231e-06
magit-log-margin-width 1 5.01e-06 5.01e-06
magit--tramp-asserts 1 4.475e-06 4.475e-06
magit-hunk-section-p 1 4.097e-06 4.097e-06
magit-section-make-overlay 1 2.431e-06 2.431e-06
magit-region-sections 1 2.136e-06 2.136e-06
magit-auto-revert-mode-cmhh 1 2.103e-06 2.103e-06
magit-decode-git-path 2 2.044...e-06 1.022...e-06
magit-repository-local-repository 1 1.555e-06 1.555e-06
magit-xref-setup 1 1.51e-06 1.51e-06
magit-insert-error-header 1 1.505e-06 1.505e-06
magit-turn-on-auto-revert-mode-if-desired 1 1.046e-06 1.046e-06
magit-file-mode-turn-on 1 9.83e-07 9.83e-07
magit-buffer-margin-p 1 9.05e-07 9.05e-07
magit-cancel-section 2 0.0 0.0
PROFILING RESULTS ON MACOS (very fast):
magit-status 1 0.584569 0.584569
magit-process-file 26 0.5628430000 0.0216478076
magit-status-internal 1 0.510929 0.510929
magit-mode-setup 1 0.510912 0.510912
magit-mode-setup-internal 1 0.510904 0.510904
magit-refresh-buffer 1 0.485749 0.485749
magit-status-refresh-buffer 1 0.484318 0.484318
magit-run-section-hook 1 0.430791 0.430791
magit-git-insert 13 0.2643129999 0.0203317692
magit-git-str 24 0.2187900000 0.0091162500
magit-insert-status-headers 1 0.160217 0.160217
magit-rev-parse-safe 20 0.15506 0.007753
magit-insert-headers 1 0.139779 0.139779
magit-insert-head-branch-header 1 0.139406 0.139406
magit-git-string 12 0.134189 0.0111824166
magit-insert-unpushed-to-upstream-or-recent 1 0.109471 0.109471
magit-insert-recent-commits 1 0.082984 0.082984
magit-git-exit-code 3 0.082196 0.0273986666
magit-insert-remaining-headers 1 0.07875 0.07875
magit-toplevel 17 0.0727460000 0.0042791764
magit-rev-verify 4 0.0676649999 0.0169162499
magit-insert-log 2 0.066954 0.033477
magit-git-wash 4 0.06692 0.01673
magit-git-items 2 0.064539 0.0322695
magit-rev-format 2 0.056975 0.0284875
magit-log-wash-log 1 0.04906 0.04906
magit-insert-tags-header 1 0.048515 0.048515
magit-rev-parse 3 0.045511 0.0151703333
magit-insert-untracked-files 1 0.043747 0.043747
magit-abbrev-length 1 0.032661 0.032661
magit-insert-unpulled-from-upstream 1 0.032577 0.032577
magit-insert-staged-changes 1 0.031339 0.031339
magit-insert-upstream-branch-header 1 0.03007 0.03007
magit-git-success 2 0.0290969999 0.0145484999
magit-get-current-tag 2 0.028617 0.0143085
magit-status-mode 1 0.022703 0.022703
magit-get-all 14 0.0214800000 0.0015342857
magit-config-get-from-cached-list 15 0.0213949999 0.0014263333
magit-load-config-extensions 1 0.021059 0.021059
magit-get-next-tag 1 0.019779 0.019779
magit-insert-unstaged-changes 1 0.019263 0.019263
magit-get-current-branch 6 0.017693 0.0029488333
magit-git-dir 11 0.017037 0.0015488181
magit-insert-merge-log 1 0.016681 0.016681
magit-wash-sequence 1 0.016351 0.016351
magit-insert-stashes 1 0.016344 0.016344
magit-log-wash-rev 11 0.016312 0.0014829090
magit-bare-repo-p 1 0.016012 0.016012
magit-rev-parse-p 1 0.015726 0.015726
magit-git-true 1 0.01572 0.01572
magit-format-ref-labels 11 0.014966 0.0013605454
magit-rev-ancestor-p 1 0.013539 0.013539
magit-maybe-save-repository-buffers 1 0.001332 0.001332
magit-save-repository-buffers 1 0.001325 0.001325
magit-mode 1 0.001204 0.001204
magit--safe-default-directory 9 0.001082 0.0001202222
magit-file-accessible-directory-p 9 0.0009219999 0.0001024444
magit-display-buffer 1 0.000802 0.000802
magit-rebase-in-progress-p 2 0.00054 0.00027
magit-get 13 0.0004720000 3.630...e-05
magit-insert-heading 5 0.000455 9.1e-05
magit-display-buffer-traditional 1 0.0004 0.0004
magit-format-ref-label 14 0.0003319999 2.371...e-05
magit-insert-rebase-sequence 1 0.000295 0.000295
magit-section-show 16 0.000288 1.8e-05
magit-get-push-branch 3 0.000285 9.499...e-05
magit-insert-sequencer-sequence 1 0.000253 0.000253
magit-log-format-margin 11 0.000248 2.254...e-05
magit-maybe-make-margin-overlay 6 0.000239 3.983...e-05
magit-get-push-remote 3 0.000234 7.8e-05
magit-mode-get-buffer 1 0.000201 0.000201
magit-section-match-1 32 0.000183 5.71875e-06
magit-file-lines 1 0.000176 0.000176
magit-section-match 7 0.000175 2.5e-05
magit-bisect-in-progress-p 3 0.000173 5.766...e-05
magit-get-upstream-branch 2 0.000171 8.55e-05
magit-section-ident 65 0.0001589999 2.446...e-06
magit-cherry-pick-in-progress-p 1 0.000135 0.000135
magit-section-set-visibility-from-cache 19 0.0001229999 6.473...e-06
magit-process-git-arguments 26 0.0001229999 4.730...e-06
magit-insert-bisect-output 1 0.000119 0.000119
magit-insert-unpulled-from-pushremote 1 0.000117 0.000117
magit-insert-am-sequence 1 0.000117 0.000117
magit-revert-in-progress-p 1 0.000113 0.000113
magit-am-in-progress-p 1 0.000113 0.000113
magit-insert-unpushed-to-pushremote 1 0.000106 0.000106
magit--process-coding-system 26 9.300...e-05 3.576...e-06
magit-insert-push-branch-header 1 9.2e-05 9.2e-05
magit-make-margin-overlay 17 8.9e-05 5.235...e-06
magit-delete-line 11 8.300...e-05 7.545...e-06
magit-section-update-highlight 1 7.5e-05 7.5e-05
magit-section-visibility-ident 35 6.999...e-05 1.999...e-06
magit-get-section 20 6.8e-05 3.4e-06
magit-expand-git-file-name 11 5.900...e-05 5.363...e-06
magit-diff-highlight 1 5.1e-05 5.1e-05
magit--age 11 5e-05 4.545...e-06
magit-cygwin-env-vars 26 4.699...e-05 1.807...e-06
magit-section-update-visibility-cache 16 4.499...e-05 2.812...e-06
magit-diff-expansion-threshold 19 3.799...e-05 2e-06
magit-set-buffer-margin 1 3.6e-05 3.6e-05
magit-insert-bisect-log 1 3.1e-05 3.1e-05
magit-insert-bisect-rest 1 3e-05 3e-05
magit-margin-option 12 1.9e-05 1.583...e-06
magit-diff-scope 1 1.7e-05 1.7e-05
magit-log-propertize-keywords 11 1.600...e-05 1.454...e-06
magit-auto-revert-mode-enable-in-buffers 1 1.5e-05 1.5e-05
magit-save-window-configuration 1 1.5e-05 1.5e-05
magit-get-boolean 1 1.5e-05 1.5e-05
magit-current-section 5 1.400...e-05 2.800...e-06
magit-section-match-2 29 1.4e-05 4.827...e-07
magit-section-goto-successor 1 1.4e-05 1.4e-05
magit-insert-child-count 16 1.100...e-05 6.875...e-07
magit-section-highlight 1 1.1e-05 1.1e-05
magit-set-window-margin 1 9e-06 9e-06
magit-refresh-get-relative-position 1 8e-06 8e-06
magit-auto-revert-mode-cmhh 1 5e-06 5e-06
magit-log-margin-width 1 4e-06 4e-06
magit-insert-error-header 1 2e-06 2e-06
magit-maybe-set-dedicated 1 2e-06 2e-06
magit-buffer-margin-p 1 2e-06 2e-06
magit-section-make-overlay 1 2e-06 2e-06
magit-diff-type 1 2e-06 2e-06
magit--tramp-asserts 1 2e-06 2e-06
magit-region-sections 1 1e-06 1e-06
magit-turn-on-auto-revert-mode-if-desired 1 1e-06 1e-06
magit-diff-use-hunk-region-p 1 1e-06 1e-06
magit-insert-diff-filter-header 1 1e-06 1e-06
magit-xref-setup 1 1e-06 1e-06
magit-cancel-section 3 0.0 0.0
git statusvia Magit (as opposed toM-x magit-statuswhich is something extremely different) takes over 4 seconds?