src: introduce PullAll method to speed up blob.text/arrayBuffer #49873

debadree25 · 2023-09-26T11:00:41Z

Made a small attempt at addressing nodejs/performance#118 essentially array buffer repeatedly calls in to the Pull method in c++ gathers all the buffers and then calls again to concatenate the buffers hence moved this entire process to the C++ side. There seems to be good performance improvment of ~3x but could not run the full comparison benchmark because it takes tooo long. My C++ skills are also pretty weak so would need some guidance 😅! Opening this PR to gather enough feedback to improve 😃

Refs: nodejs/performance#118

Thank You!

Refs: nodejs/performance#118

src/node_blob.cc

anonrig · 2023-09-26T15:48:33Z

lib/internal/blob.js

+        // from a non-memory resident blob part (e.g. file-backed blob).
+        // The error details the system error code.
+        const error = lazyDOMException('The blob could not be read', 'NotReadableError');
+        reject(error);


If you pass resolve and reject methods to pullAll function, we don't even need to return anything and just handle it on C++ side. It might provide a performance boost. This would also reduce calling and mutating the callback function.

src/node_blob.cc

anonrig · 2023-09-26T15:50:13Z

src/node_blob.cc

+    size_t offset = 0;
+  };
+
+  struct Impl {


Can we use a little more descriptive struct names?

src/node_blob.cc

debadree25 · 2023-09-26T18:00:12Z

Okay so now the main problem how to replicate something like

reader.pull((status, buffer) => {
// ....
queueMicrotask(() => readNext());
}

in the C++ land
i tried something like this

std::shared_ptr<Impl> impl = std::make_shared<Impl>();
impl->reader = BaseObjectPtr<Blob::Reader>(reader);
impl->callback.Reset(env->isolate(), fn);
impl->env = env;
auto next = [impl_ptr = impl](int status, const DataQueue::Vec* vecs, size_t count, bob::Done doneCb) mutable {
  // ... initialising stuff and collecting the buffer
  if (status > 0) {
      impl_ptr->enqueue_cb();
  } else {
      // .. concatenate the buffers
      Local<Value> argv[2] = {Int32::New(env->isolate(), status), ArrayBuffer::New(env->isolate(), store)};
      impl_ptr->reader->MakeCallback(fn, arraysize(argv), argv);
  }
};

impl->enqueue_cb = [&]() {
    reader->inner_->Pull(next, node::bob::OPTIONS_END, nullptr, 0);
};

impl->enqueue_cb();

but the above gives a segmentation fault ☹️
i tried using unique_ptr too but that gives

note: copy constructor of '(lambda at ../../src/node_blob.cc:420:15)' is implicitly deleted because field '' has a deleted copy constructor

so any other ideas? I know wouldnt be doing a recursive call instead would call the Pull wrapped in enqueue microtask ref: nodejs/performance#118 (comment) but need to get the calling order correct first

anonrig · 2023-09-26T18:09:02Z

src/node_blob.cc

@@ -291,6 +291,7 @@ Local<FunctionTemplate> Blob::Reader::GetConstructorTemplate(Environment* env) {
        BaseObject::kInternalFieldCount);
    tmpl->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "BlobReader"));
    SetProtoMethod(env->isolate(), tmpl, "pull", Pull);
+    SetProtoMethod(env->isolate(), tmpl, "pullAll", PullAll);


Can you also update typescript typings for blob?

debadree25 · 2023-09-27T07:30:34Z

src/node_blob.cc

+    }
+
+    if (status > 0) {
+      impl_ptr->enqueue_cb();


Okay now this causes a stack overflow for large bufs we need to use microtask queue i tried something like this

env->RequestInterrupt([impl_ptr](Environment* env) { env->context()->GetMicrotaskQueue()->EnqueueMicrotask( env->isolate(), [](void* arg) { printf("Calling here?\n"); auto impl_ptr = static_cast<std::shared_ptr<Impl>*>(arg); (*impl_ptr)->enqueue_cb(); }, impl_ptr.get()); });

but this gives a very friendly segfault probably because i mangling the pointer somewhere ☹️ there arent much examples of usage with the microtask queue

any ideas @anonrig ?😅

debadree25 · 2023-12-07T16:34:27Z

@nodejs/cpp-reviewers if anyone could guide on this PR would be great help!

Thank you!

lemire · 2024-02-01T13:27:27Z

src/node_blob.cc

+      size_t total = 0;
+      for (size_t n = 0; n < count; n++) total += vecs[n].len;
+
+      std::shared_ptr<BackingStore> store = v8::ArrayBuffer::NewBackingStore(env->isolate(), total);


I think that NewBackingStore returns std::unique_ptr<BackingStore>, doesn't it? If I am right, and you are changing it to a shared_ptr, then I recommend you justify this choice with a comment.

lemire · 2024-02-01T13:34:51Z

src/node_blob.cc

+    if (status > 0) {
+      impl_ptr->enqueue_cb();
+    } else {
+      std::shared_ptr<BackingStore> store = ArrayBuffer::NewBackingStore(env->isolate(), impl_ptr->total_size);


same question here. If NewBackingStore returns a unique_ptr, changing the type might require an explanation.

lemire · 2024-02-01T13:36:14Z

src/node_blob.cc

+        std::copy(vecs[n].base, vecs[n].base + vecs[n].len, ptr);
+        ptr += vecs[n].len;
+      }
+      std::move(doneCb)(0);


I personnally do not understand why there is a std::move... If it is correct, I recommend adding a comment to explain it.

lemire · 2024-02-01T13:39:40Z

@debadree25 Compiling node with --enable-asan may help with segmentation faults and the like.

debadree25 · 2024-02-01T17:30:39Z

Good idea @lemire I havent had tried with asan build let me get back to you by trying with that, i may that have rewrite this again once to remember the flow i was attempting!, thank you for taking the time to review!

PR-URL: nodejs#49871 Refs: nodejs@fbe28e2 Reviewed-By: Marco Ippolito <[email protected]> Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: Chemi Atlow <[email protected]>

PR-URL: nodejs#49692 Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Robert Nagy <[email protected]> Reviewed-By: Benjamin Gruenbaum <[email protected]>

PR-URL: nodejs#49834 Reviewed-By: Benjamin Gruenbaum <[email protected]> Reviewed-By: Robert Nagy <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]>

PR-URL: nodejs#49878 Fixes: nodejs#49853 Reviewed-By: Benjamin Gruenbaum <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Geoffrey Booth <[email protected]> Reviewed-By: Chemi Atlow <[email protected]>

Original commit message: Reland^2 "[iterator-helpers] Unship due to incompat" This is a reland of commit bab67985346dbc0d566391ad561537b4554455b4 Change since reland: A second breakage reported in chromium:1480783 Original change's description: > Reland "[iterator-helpers] Unship due to incompat" > > This is a reland of commit 1a22cf9896d682a9dfca589f92ed97c7f875b8a2 > > Change since revert: I mistakenly thought part of the finch > kill-switch playbook is to keep it enabled on ToT. It's actually > the opposite. > > Original change's description: > > [iterator-helpers] Unship due to incompat > > > > Bug: chromium:1474613, v8:13558 > > Change-Id: Iccba26e5cd5dc1787172c78b6e4f6889ef67fcea > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4834350 > > Reviewed-by: Adam Klein <[email protected]> > > Commit-Queue: Shu-yu Guo <[email protected]> > > Cr-Commit-Position: refs/heads/main@{#89741} > > Bug: chromium:1474613, v8:13558 > Change-Id: Idc421a114303f036622bff681c9fa252c9110b9d > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4843761 > Commit-Queue: Rezvan Mahdavi Hezaveh <[email protected]> > Auto-Submit: Shu-yu Guo <[email protected]> > Commit-Queue: Shu-yu Guo <[email protected]> > Reviewed-by: Rezvan Mahdavi Hezaveh <[email protected]> > Cr-Commit-Position: refs/heads/main@{#89800} Bug: chromium:1474613, v8:13558 Change-Id: Ia933c874508f1ec10ea4718c6378858cd5bec8f9 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4854732 Reviewed-by: Rezvan Mahdavi Hezaveh <[email protected]> Auto-Submit: Shu-yu Guo <[email protected]> Commit-Queue: Rezvan Mahdavi Hezaveh <[email protected]> Cr-Commit-Position: refs/heads/main@{#89905} Refs: v8/v8@89b3702 PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

Original commit message: fix: EmbeddedTargetOs on IBM i with Python 3.9 For some context, Python 3.9 on IBM i returns "os400" for sys.platform instead of "aix". We used to build with Python 3.6 which returned "aix" as the platform When attempting to build Node.js with python 3.9 on IBM i we run into a build error. Ref: nodejs#48056 Ref: nodejs#48056 (comment) I'm not quite sure where target_os is being passed down to the function ToEmbeddedTargetOs. It seems as though target_os is being generated from sys.platform or similar call from python as we started running into this issue after building with Python 3.9. This PR supersedes initial changes proposed in: https://chromium-review.googlesource.com/c/v8/v8/+/4259330 This PR contains the minimal changes to successfully build Node.js (builds v8 as an internal dep) on IBM i with Python 3.9. Change-Id: I32d43197bce994a72a0d85091e91f80eeea4482d Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4846413 Commit-Queue: Jakob Linke <[email protected]> Reviewed-by: Michael Achenbach <[email protected]> Reviewed-by: Jakob Linke <[email protected]> Cr-Commit-Position: refs/heads/main@{#89981} Refs: v8/v8@8ec2651 PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

Refs: v8/v8@d9715ad PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

Accept a new `step` break message. PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

`--no-harmony-sharedarraybuffer` was removed from V8 but it's still possible to disable the feature with `--enable-sharedarraybuffer-per-context`. PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

Syntax errors from `JSON.parse` contain more information and can now be printed on two lines if they are long. PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

Refs: nodejs#50050 PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

Refs: nodejs#50079 PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

JSTransferable wrapper object is a short-lived wrapper in the scope of the serialization or the deserialization. Make the JSTransferable wrapper object pointer as a strongly-referenced detached BaseObjectPtr so that a JSTransferable wrapper object and its target object will never be garbage-collected during a ser-des process, and the wrapper object will be immediately destroyed when the process is completed. PR-URL: nodejs#50026 Fixes: nodejs#49852 Fixes: nodejs#49844 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Matteo Collina <[email protected]>

Notable changes: This release addresses some regressions that appeared in Node.js 18.18.0: - (Windows) FS can not handle certain characters in file name nodejs#48673 - 18 and 20 node images give error - Text file busy (after re-build images) nodejs/docker-node#1968 - libuv update in 18.18.0 breaks webpack's thread-loader nodejs#49911 The libuv 1.45.0 and 1.46.0 updates that were released in Node.js 18.18.0 have been temporarily reverted. PR-URL: nodejs#50066

PR-URL: nodejs#48902 Fixes: nodejs#48640 Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

PR-URL: nodejs#50091 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Joyee Cheung <[email protected]> Reviewed-By: Tobias Nießen <[email protected]>

PR-URL: nodejs#50032 Refs: nodejs/performance#106 Reviewed-By: Yagiz Nizipli <[email protected]>

PR-URL: nodejs#50088 Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Trivikram Kamat <[email protected]>

This commit adds a 'flush' option to the createWriteStream() family of functions. Refs: nodejs#49886 PR-URL: nodejs#50093 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Marco Ippolito <[email protected]>

PR-URL: nodejs#50142 Reviewed-By: Michael Dawson <[email protected]> Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Tobias Nießen <[email protected]> Reviewed-By: Darshan Sen <[email protected]> Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Benjamin Gruenbaum <[email protected]> Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Ruy Adorno <[email protected]> Reviewed-By: Luigi Pinca <[email protected]>

PR-URL: nodejs#50121 Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Michael Dawson <[email protected]> Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Marco Ippolito <[email protected]> Reviewed-By: Tobias Nießen <[email protected]>

This test was flaky on Windows when trying to clean up the tmp directory, probably because it relied on child processes timing out and being killed. This commit updates the test to check for debug output from the test runner. This should be adequate because the original change was effectively: let concurrency = getOptionValue('--test-concurrency') || true; The test runner now logs the value of the concurrency variable. Fixes: nodejs#50101 PR-URL: nodejs#50108 Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Geoffrey Booth <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]>

PR-URL: nodejs#50038 Refs: nodejs/performance#106 Reviewed-By: Yagiz Nizipli <[email protected]>

debadree25 · 2024-04-15T08:16:33Z

Will reopen have completely messed up my branch

src: introduce PullAll method to speed up blob.text/arrayBuffer

33e2913

Refs: nodejs/performance#118

debadree25 requested a review from anonrig September 26, 2023 11:00

nodejs-github-bot added c++ Issues and PRs that require attention from people who are familiar with C++. needs-ci PRs that need a full CI run. labels Sep 26, 2023

fixup! linting

eb086f2

debadree25 commented Sep 26, 2023

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src/node_blob.cc Outdated Show resolved Hide resolved

debadree25 marked this pull request as draft September 26, 2023 11:35

debadree25 mentioned this pull request Sep 26, 2023

Blob.text and Blob.arraybuffer are 10x+ slower on 20.x nodejs/performance#118

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anonrig reviewed Sep 26, 2023

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anonrig requested a review from jasnell September 26, 2023 15:54

anonrig reviewed Sep 26, 2023

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debadree25 added 3 commits September 27, 2023 11:50

fixup! get everything working

6975d04

fixup! no return

0f22ac7

fixup! use use emplace and update for

d6cd738

debadree25 commented Sep 27, 2023

View reviewed changes

anonrig requested review from joyeecheung and Qard September 30, 2023 02:53

debadree25 requested review from jasnell and removed request for jasnell October 28, 2023 17:07

lemire reviewed Feb 1, 2024

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MoLow and others added 4 commits April 15, 2024 13:43

tools: support updating @reporters/github manually

7de4169

PR-URL: nodejs#49871 Refs: nodejs@fbe28e2 Reviewed-By: Marco Ippolito <[email protected]> Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: Chemi Atlow <[email protected]>

url: improve invalid url performance

5eb1cd2

PR-URL: nodejs#49692 Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Robert Nagy <[email protected]> Reviewed-By: Benjamin Gruenbaum <[email protected]>

stream: use bitmap in writable state

97c63a6

PR-URL: nodejs#49834 Reviewed-By: Benjamin Gruenbaum <[email protected]> Reviewed-By: Robert Nagy <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]>

targos and others added 27 commits April 15, 2024 13:43

deps: bump minimum ICU version to 73

cbcdb50

Refs: v8/v8@d9715ad PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

tools: update V8 gypfiles for 11.4

d48ba77

PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

tools: update V8 gypfiles for 11.5

edce6ae

PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

tools: update V8 gypfiles for 11.6

410e6b8

PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

tools: update V8 gypfiles for 11.7

cc4505f

PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

tools: update V8 gypfiles for 11.8

eda59e7

PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

tools: add new V8 headers to distribution

a95b2d2

PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

lib: update usage of always on Atomics API

a7a5db3

PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

test: adapt debugger tests to V8 11.4

7b537c7

Accept a new `step` break message. PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

test: adapt test-fs-write to V8 internal changes

cb454a9

PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

test: skip test-tick-processor-arguments on SmartOS

8b4a14d

Refs: nodejs#50050 PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

test: skip v8-updates/test-linux-perf

cd32d73

Refs: nodejs#50079 PR-URL: nodejs#49639 Reviewed-By: Jiawen Geng <[email protected]> Reviewed-By: Rafael Gonzaga <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

doc: fix description of fs.readdir recursive option

0345207

PR-URL: nodejs#48902 Fixes: nodejs#48640 Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

deps: update simdutf to 3.2.18

e41fa7f

PR-URL: nodejs#50091 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Joyee Cheung <[email protected]> Reviewed-By: Tobias Nießen <[email protected]>

fs: improve error performance for ftruncateSync

418416a

PR-URL: nodejs#50032 Refs: nodejs/performance#106 Reviewed-By: Yagiz Nizipli <[email protected]>

deps: update corepack to 0.21.0

54c1138

PR-URL: nodejs#50088 Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Trivikram Kamat <[email protected]>

fs: improve error performance of writevSync

d75f4f9

PR-URL: nodejs#50038 Refs: nodejs/performance#106 Reviewed-By: Yagiz Nizipli <[email protected]>

debadree25 closed this Apr 15, 2024

debadree25 mentioned this pull request Apr 15, 2024

src: introduce PullAll method to speed up blob.text/arrayBuffer #52546

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src: introduce PullAll method to speed up blob.text/arrayBuffer #49873

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src: introduce PullAll method to speed up blob.text/arrayBuffer #49873

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