On Monday, 5 December 2022 06:30:22 GMT Walter Dnes wrote: > On Wed, Nov 30, 2022 at 01:50:02PM +0100, Jochen Kirchner wrote > > > this is my make.conf: (its a web - and mail server) > > > > MAKEOPTS="-j17 -l17" > > Ouch!!! How much ram do you have on that machine? The Gentoo install > handbook has a dire warning at... > > https://wiki.gentoo.org/wiki/Handbook:AMD64/Full/Installation#MAKEOPTS > > ...that you need approx 2 gigabytes free ram for each increment in > "MAKEOPTS". > > > * Warning > > Using a large number of jobs can significantly impact memory > > consumption. A good recommendation is to have at least 2 GiB of RAM > > for every job specified (so, e.g. -j6 requires at least 12 GiB). To > > avoid running out of memory, lower the number of jobs to fit the > > available memory. > > If you have a fancy-schmancy "desktop environment" allow another 3 or > 4 Gigs, especially if you're simultaneously running Chrome or > calculating large spreadsheets or processing large documents. For > "MAKEOPTS=-j17" you'll need at least 36-to-40 gigabytes.
Well, I've seen that warning, and I run a plasma desktop, but I set -j48 -- jobs=48 --load-average=72 without noticeable swapping in this 64GB, 24-core Ryzen 9 5900X machine. The one exception is qtwebengine, which wants 48GB for itself. -- Regards, Peter.
