Date: Mon, 17 Nov 2008 17:14:21 +0200 From: Murat Balaban <murat@enderunix.org> To: freebsd-hackers@freebsd.org Subject: Giant lock, bce and uhc using the same irq Message-ID: <1226934861.6310.25.camel@efe>
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Hello hackers, In one of my production servers (64-bit Intel Xeon machine) running 6.3-RELEASE-p4 (amd64) FreeBSD 6.3-RELEASE-p4 #0: Fri Sep 12 17:07:19 EEST 2008 I see this "top -S" output excerpt: 32 root 1 -68 -187 0K 16K *Giant 0 48.3H 3.08% irq17: bce1 uhci1 What I get from above is that bce and uhc drivers both use irq17. I assume bce is SMPng'ed, and uhc is not. Does uhc being Giant locked, affect bce performance, because they use the same interrupt handler thread? -- Murat http://www.enderunix.org/murat/
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