Date: Wed, 5 Apr 2006 02:33:58 +0200 From: Paolo Pisati <p.pisati@oltrelinux.com> To: current@freebsd.org Cc: Luigi Rizzo <rizzo@icir.org> Subject: Interesting data on network interrupt - part II Message-ID: <20060405003358.GA83600@tin.it>
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Hi, i updated my work on interrupt profiling with sone new experiments. In total we have now: -FreeBSD 4 PIC (no asm part) -FreeBSD 7 APIC -FreeBSD 7 PIC -FreeBSD 7 PREE APIC -FreeBSD 7 APIC JHB Some quick comments: -PIC is much slower in masking interrupt (7k in PIC vs 3k in APIC) -PREE let new thread save less than 500 ticks of 'queue' while preempted threads are often resumed after a lot -JHB patch shaved 2.5k ticks in interrupt masking op For graphs, data and more comments: http://mercurio.sm.dsi.unimi.it/~pisati/interrupt/ bye -- Paolo "le influenze esterne sono troppe, il mondo reale non e' mica quello fatato dei komunisti :-p" - Anonymous Lumbard
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