Date: Sun, 12 Dec 2004 23:23:01 +0900 (JST) From: Shunsuke SHINOMIYA <shino@fornext.org> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/74986: sysctlize a parameter of if_em's interrupt moderation Message-ID: <200412121423.iBCEN18m012616@zipper.net.ss.titech.ac.jp> Resent-Message-ID: <200412121430.iBCEUQhC094932@freefall.freebsd.org>
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>Number: 74986 >Category: kern >Synopsis: sysctlize a parameter of if_em's interrupt moderation >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: change-request >Submitter-Id: current-users >Arrival-Date: Sun Dec 12 14:30:26 GMT 2004 >Closed-Date: >Last-Modified: >Originator: Shunsuke SHINOMIYA >Release: FreeBSD 5.3-RELEASE i386 >Organization: >Environment: System: FreeBSD zipper.net.ss.titech.ac.jp 5.3-RELEASE FreeBSD 5.3-RELEASE #28: Mon Nov 15 15:50:34 JST 2004 shino@zipper.net.ss.titech.ac.jp:/usr/obj/usr/src/sys/PM i386 >Description: This change sysctlize last one of the parameter of if_em's interrupt moderation . sysctl hw.em?.int_throttle_ceil corresponds to the `absolute timer' at AP450(*1), application note by intel. *1 ftp://download.intel.com/design/network/applnots/ap450.pdf `absolute timer' is for suppressing rate of interrupt per unit of time. The value of int_throttle_ceil means a ceiling of the number of interrupt fireing per unit of time. Default value of int_throttle_ceil is 8000. Setting int_throttle_ceil 0 means disabling throttle moderation concerning the absolute timer. >How-To-Repeat: >Fix: The diff of URL shown below adds sysctl int_throttle_ceil to hw.em?. http://www.fornext.org/patch/if_em.diff >Release-Note: >Audit-Trail: >Unformatted:
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