Eric Rahm EricRahm

## embossc-profile
#!/usr/bin/env python3

# Copyright 2024 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#

## embossc-profile-front-end
#!/usr/bin/env python3

# Copyright 2024 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#

## patch_and_build.sh
#!/usr/bin/env bash

export LOCAL_NDK_BASE_URL='ftp://ftp.kaiostech.com/ndk/android-ndk'

mkdir patches

# Apply open PR for B2G repo
wget https://github.com/kaiostech/B2G/pull/4.patch -O patches/b2g.patch && patch -p1 < patches/b2g.patch

# Init

## build.sh
#!/usr/bin/env bash

# Switch to the stable builds
rustup default stable
rustc -V
cargo -V

cat .mozconfig

echo ""

## build.sh
#!/usr/bin/env sh

# Switch to the nightly builds
rustup default nightly
rustc -V
cargo -V

# Baseline runs without pipelining
unset CARGO_BUILD_PIPELINING
echo -n "Initial run to populate ccache..."

## windows_10mb.md

      
              1 file
            
          
              0 forks
            
          
              0 comments
            
          
              0 stars
            
          
                EricRahm
                / windows_10mb.md
            
            
              Last active
              January 15, 2019 21:17
            
              
                Reducing windows overhead to 10MB
              
          
Savings in KB
Bug
Title


2,000
1449600
Investigate reducing minimum GC memory


400
1470015
Investigate sharing font-related caches among Gecko processes


500
1364559
Consider extending SharedImmutableStringsCache to work between processes


500
1458339
Investigate sharing self-hosted compartment across content processes


250
1475091
Dropping rayon thread pool when a content process is inactive?


400
1474793
consider sharing UA style sheets across processes


128
1477393
Replace various watchdog/hang monitor threads with timers


100
1470339
Reduce the overhead of telemetry in content processes


## versions.md

      
              1 file
            
          
              0 forks
            
          
              1 comment
            
          
              0 stars
            
          
                EricRahm
                / versions.md
            
            
              Last active
              March 12, 2017 10:30
            
              
                Browser versions used for Are They Slim Yet testing March 2017
              
          
    Ubuntu 16.04 LTS


Firefox 55.0a1 (2017-03-08) (64-bit)
Chrome (aka chrome-unstable) 54.0.2810.2 dev (64-bit)

macOS 10.12.3


Firefox 55.0a1 (2017-03-08) (64-bit)
Chrome Version 59.0.3037.0 (Official Build) canary (64-bit)
Safari Tecnhology Preview Release 25 (Safari 10.2, WebKit 12604.1.8.1.2)


## rust-xml.md

      
              1 file
            
          
              0 forks
            
          
              1 comment
            
          
              0 stars
            
          
                EricRahm
                / rust-xml.md
            
            
              Last active
              February 6, 2020 16:54
            
              
                Gecko Rust XML Parser Requirements
              
          
    Goal: Replace Gecko's XML parser, libexpat, with a rust-based XML parser
Reasoning:


Various integer overflow CVEs
Buffer overflows
Simplify, we don't need character conversion (which has lead to several CVEs)

Requirements:


push/sax based interface (lower memory, streaming)
supports DTD, entities


## .mozconfig
ac_add_options --enable-debug
ac_add_options --enable-dmd

# NB: ccache disabled for comparitive build time testing.
#ac_add_options --with-ccache=/usr/bin/ccache

MOZ_MAKE_FLAGS="-j12"
export LD="/usr/bin/gold"

# For gcc-6.3.0

## mem_usage.md

      
              1 file
            
          
              0 forks
            
          
              0 comments
            
          
              0 stars
            
          
                EricRahm
                / mem_usage.md
            
            
              Last active
              January 26, 2016 23:24
            
              
                Comptetitve Analysis (Memory)
              
          
    Test: TP5 (30 tabs, 10s per tab, 60s settle)


OS
Browser
Version
RSS + USS


OSX 10.10.5
Google Chrome Canary
50.0.2627.0
1,419,870,208


OSX 10.10.5
Firefox Nightly + 1 CP
46.0a1 20160122030244
1,117,077,504


Ubuntu 14.04
Google Chrome Unstable
49.0.2618.8 dev (64-bit)
989,814,784


Ubuntu 14.04
Firefox Nightly + 1 CP
46.0a1 20160122030244
550,825,984


Windows 7
Google Chrome Canary
50.0.2631.0 canary (64-bit)
1,187,258,368


Windows 7
Firefox Nightly + 1 CP
47.0a1 20160126030244
537,321,472
	#!/usr/bin/env python3

	# Copyright 2024 Google LLC
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# https://www.apache.org/licenses/LICENSE-2.0
	#
	#!/usr/bin/env bash

	export LOCAL_NDK_BASE_URL='ftp://ftp.kaiostech.com/ndk/android-ndk'

	mkdir patches

	# Apply open PR for B2G repo
	wget https://github.com/kaiostech/B2G/pull/4.patch -O patches/b2g.patch && patch -p1 < patches/b2g.patch

	# Init
	#!/usr/bin/env bash

	# Switch to the stable builds
	rustup default stable
	rustc -V
	cargo -V

	cat .mozconfig

	echo ""
	#!/usr/bin/env sh

	# Switch to the nightly builds
	rustup default nightly
	rustc -V
	cargo -V

	# Baseline runs without pipelining
	unset CARGO_BUILD_PIPELINING
	echo -n "Initial run to populate ccache..."
Savings in KB	Bug	Title
2,000	1449600	Investigate reducing minimum GC memory
400	1470015	Investigate sharing font-related caches among Gecko processes
500	1364559	Consider extending SharedImmutableStringsCache to work between processes
500	1458339	Investigate sharing self-hosted compartment across content processes
250	1475091	Dropping rayon thread pool when a content process is inactive?
400	1474793	consider sharing UA style sheets across processes
128	1477393	Replace various watchdog/hang monitor threads with timers
100	1470339	Reduce the overhead of telemetry in content processes
	ac_add_options --enable-debug
	ac_add_options --enable-dmd

	# NB: ccache disabled for comparitive build time testing.
	#ac_add_options --with-ccache=/usr/bin/ccache

	MOZ_MAKE_FLAGS="-j12"
	export LD="/usr/bin/gold"

	# For gcc-6.3.0
OS	Browser	Version	RSS + USS
OSX 10.10.5	Google Chrome Canary	50.0.2627.0	1,419,870,208
OSX 10.10.5	Firefox Nightly + 1 CP	46.0a1 20160122030244	1,117,077,504
Ubuntu 14.04	Google Chrome Unstable	49.0.2618.8 dev (64-bit)	989,814,784
Ubuntu 14.04	Firefox Nightly + 1 CP	46.0a1 20160122030244	550,825,984
Windows 7	Google Chrome Canary	50.0.2631.0 canary (64-bit)	1,187,258,368
Windows 7	Firefox Nightly + 1 CP	47.0a1 20160126030244	537,321,472