posts /

16TB Speicher

Posted Sat 22 Jun 2013 11:47:33 PM CEST

Rechner mit 16TByte Ram - Booten dauert >1 Stunde weil der Speicherinhalt geloescht werden muss :)

Date: Fri, 21 Jun 2013 11:25:32 -0500 From: Nathan Zimmer nzimmer@sgi.com Subject: [RFC 0/2] Delay initializing of large sections of memory

This rfc patch set delays initializing large sections of memory until we have started cpus. This has the effect of reducing startup times on large memory systems. On 16TB it can take over an hour to boot and most of that time is spent initializing memory.

We avoid that bottleneck by delaying initialization until after we have started multiple cpus and can initialize in a multithreaded manner. This allows us to actually reduce boot time rather then just moving around the point of initialization.