Chromium is taking a long time to compile

<3 · Veteran Joined: 21 Oct 2004 Posts: 1081

Can someone please tell me why it takes so long to compile www-client/chromium. I just noticed that compile times for www-client/chromium have gotten way out of hand

szczerb · Posted: Tue Jan 27, 2015 10:05 am Post subject:

It doubled on my machine since the 36 version. How much RAM and /var/tmp do you have?

That's from i7-4800MQ with 16GB of RAM and 12GB of /var/tmp on SSD with MAKEOPTS="-j7":

<3 · Veteran Joined: 21 Oct 2004 Posts: 1081

This is on my laptop which is a Core i7-2530QM 2.00Ghz (Sandy Bridge) octa-core (4 physical & 4 virtual cores [hyperthreading]) with 6 GB of ram.

<3 · Veteran Joined: 21 Oct 2004 Posts: 1081

I've never used this qlop program before but something looks fishy

<3 · Veteran Joined: 21 Oct 2004 Posts: 1081

so I guess I'm the only one having long compile times with chromium?

szczerb · Posted: Wed Jan 28, 2015 10:43 am Post subject:

It's long for everyone. Just not that long.

Also the issue with multi-day times from qlop are interesting.

Don't really know how to help you with that.

<3 · Veteran Joined: 21 Oct 2004 Posts: 1081

on my other gentoo install on another computer chromium builds were about 45 mins long. never multiple hours long. so yes I understand that. But there is a big difference between 45mins and 4 hours.

<3 · Veteran Joined: 21 Oct 2004 Posts: 1081

Maybe I should just un-install Chromium to deal with this issue?

kurly · Apprentice Joined: 02 Apr 2012 Posts: 260

You've got 6GB of RAM and are using MAKEOPTS="-j9". You're probably swapping, which would account for serious slow down. Not sure it would account for multi-day compile times, but maybe it could... compiling in swap is sloooooooow.

<3 · Veteran Joined: 21 Oct 2004 Posts: 1081

Wow swapping with 6GB of ram? Even libreoffice is compiling faster than Chromium.

Princess Nell · l33t Joined: 15 Apr 2005 Posts: 916

Can you compare qlop output with genlop -t?

<3 · Veteran Joined: 21 Oct 2004 Posts: 1081

This is on a laptop and I am using the power cord that the laptop was bought with. I would never emerge anything without the machine being plugged in for fear the battery would die during compilation.

szczerb · Posted: Thu Feb 19, 2015 2:20 pm Post subject:

You can just put the laptop to sleep during emerge, if you're running low on battery. Or Ctrl+C it in the compile phase.

ShanaXXII · Apprentice Joined: 29 Jun 2014 Posts: 283 Location: Canada

I don't really think you need swap.
My laptop only has 4Gb RAM and it has never run out of RAM once. (-j5)
It has sometimes gotten close, but that was mostly because of multiple compilations.

<3 · Veteran Joined: 21 Oct 2004 Posts: 1081

can someone else post their compile times and system specs so that I can compare? I want to know if this issue is affecting my system only. I have a Core i7-2630QM 8 core (4 logical, 4 virtual cores, hyperthreading) 6GB ram physical hard drive with 150GB space free and a 12GB swap partition. gcc version 4.8.3, glibc version 2.19-r1 MAKEOPTS="-j9" ccache-3.19-r4

dweezil-n0xad · Posted: Mon Feb 23, 2015 2:44 pm Post subject:

RayOfLight · Posted: Mon Feb 23, 2015 4:29 pm Post subject:

yzg · Guru Joined: 18 Jun 2005 Posts: 493

For me, it grows from 30min to just under 3 hours.

<3 · Veteran Joined: 21 Oct 2004 Posts: 1081

Thank you guys, maybe I'm making a fuss over nothing. I guess I will leave it be till a real problem arrives.

zsitvaij · n00b Joined: 11 Jan 2006 Posts: 74

There's the option to build with clang in the latest masked packages of 42.*, and simply copy-pasting the changes to 40.* and 41.* worked for me to reduce build times by 1/2-1/3 depending on system:

core 2 duo 5870 @ 2 ghz:

kernelOfTruth · Posted: Fri Nov 25, 2016 1:13 pm Post subject:

Scheduler-issues and cpu governor issues [intel_pstate, ondemand not properly clocking up the CPU] can also account for that:

Ant P. · Watchman Joined: 18 Apr 2009 Posts: 6920

Tom_ · Guru Joined: 20 May 2004 Posts: 444 Location: France

First, I'm sorry to reply to this old thread but I'm curious to understand why it takes so long to build Chromium nowadays. I know that it is long for everyone but I'm wondering what has changed to get an almost 3 hours long merge.

For the last Chromium compilation, I mounted /var/tmp/portage as tmpfs. It improved the compile time slightly but it is not amazing.

Compile times on my computer (see emerge --info below)

kharitonow · n00b Joined: 10 Dec 2015 Posts: 38

Hi Tom,

you can enable ccache feature in your make.conf (see wiki) to boost future builds of chromium.

Hu · Moderator Joined: 06 Mar 2007 Posts: 21633