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Mon, 21 Feb 2022 21:31:16 -0800 (PST) From: Ihor Radchenko <yantar92@gmail.com> To: Matt Price <moptop99@gmail.com> Subject: Re: profiling latency in large org-mode buffers (under both main & org-fold feature) In-Reply-To: <CAN_Dec8aVcO7f0WR8skdC05Ahp_3OuzrS3JP0vyDe8gfrq2WnQ@mail.gmail.com> References: <CAN_Dec8aVcO7f0WR8skdC05Ahp_3OuzrS3JP0vyDe8gfrq2WnQ@mail.gmail.com> Date: Tue, 22 Feb 2022 13:30:48 +0800 Message-ID: <87ilt7piwn.fsf@localhost> MIME-Version: 1.0 Content-Type: text/plain X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::329 (failed) Received-SPF: pass client-ip=2a00:1450:4864:20::329; envelope-from=yantar92@gmail.com; helo=mail-wm1-x329.google.com X-Spam_score_int: -3 X-Spam_score: -0.4 X-Spam_bar: / X-Spam_report: (-0.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, PDS_HP_HELO_NORDNS=0.659, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-orgmode@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "General discussions about Org-mode." <emacs-orgmode.gnu.org> List-Unsubscribe: <https://lists.gnu.org/mailman/options/emacs-orgmode>, <mailto:emacs-orgmode-request@gnu.org?subject=unsubscribe> List-Archive: <https://lists.gnu.org/archive/html/emacs-orgmode> List-Post: <mailto:emacs-orgmode@gnu.org> List-Help: <mailto:emacs-orgmode-request@gnu.org?subject=help> List-Subscribe: <https://lists.gnu.org/mailman/listinfo/emacs-orgmode>, <mailto:emacs-orgmode-request@gnu.org?subject=subscribe> Cc: Org Mode <emacs-orgmode@gnu.org> Errors-To: emacs-orgmode-bounces+larch=yhetil.org@gnu.org Sender: "Emacs-orgmode" <emacs-orgmode-bounces+larch=yhetil.org@gnu.org> X-Migadu-Flow: FLOW_IN X-Migadu-Country: US ARC-Message-Signature: i=1; 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aspmx1.migadu.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=buE673iK; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (aspmx1.migadu.com: domain of "emacs-orgmode-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="emacs-orgmode-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -6.13 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=buE673iK; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (aspmx1.migadu.com: domain of "emacs-orgmode-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="emacs-orgmode-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: D544F2985A X-Spam-Score: -6.13 X-Migadu-Scanner: scn0.migadu.com X-TUID: 02hW9vv819HM Matt Price <moptop99@gmail.com> writes: > However, if I instead use my fairly extensive main config, latency is high > enough that there's a noticeable delay while typing ordinary words. I see > this regardless of whether I build from main or from Ihor's org-fold > feature branch on github. The profiler overview here is pretty different -- > redisplay_internal takes a much higher percentage of the CPU requirement: > > 3170 56% - redisplay_internal (C function) > .... > 1200 21% - completing-read-default > 1200 21% - apply > 1200 21% - vertico--advice > 475 8% + #<subr completing-read-default> Judging from the profiler report, you did not collect enough number of CPU samples. I recommend to keep the profiler running for at least 10-30 seconds when trying to profile typing latency. Also, note that running M-x profiler-report second time will _not_ reproduce the previous report, but instead show CPU profiler report between the last invocation of profiler-report and the second one. I recommend to do the following: 1. M-x profiler-stop 2. M-x profiler-start 3. Do typing in the problematic Org file for 10-30 seconds 4. M-x profiler-report (once!) 5. Share the report here > I've almost never used the profiler and am not quite sure how I should > proceed to debug this. I realize I can comment out parts of the config one > at a time, but that is not so easy for me to do in my current setup, and I > suppose there are likely to be multiple contributing causes, which I may > not really notice except in the aggregate. The above steps should be the first thing to try and they will likely reveal the bottleneck. If not, you can go back to genetic bisection. I do not recommend manual commenting/uncommenting parts of you large config. Instead, you can try https://github.com/Malabarba/elisp-bug-hunter. But only if CPU profiling does not reveal anything useful. Best, Ihor