From owner-freebsd-arm@FreeBSD.ORG Mon Mar 15 11:07:08 2010 Return-Path: Delivered-To: freebsd-arm@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A2944106566C for ; Mon, 15 Mar 2010 11:07:08 +0000 (UTC) (envelope-from owner-bugmaster@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 5AC568FC22 for ; Mon, 15 Mar 2010 11:07:08 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.4/8.14.4) with ESMTP id o2FB78Vj026807 for ; Mon, 15 Mar 2010 11:07:08 GMT (envelope-from owner-bugmaster@FreeBSD.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id o2FB7713026805 for freebsd-arm@FreeBSD.org; Mon, 15 Mar 2010 11:07:07 GMT (envelope-from owner-bugmaster@FreeBSD.org) Date: Mon, 15 Mar 2010 11:07:07 GMT Message-Id: <201003151107.o2FB7713026805@freefall.freebsd.org> X-Authentication-Warning: freefall.freebsd.org: gnats set sender to owner-bugmaster@FreeBSD.org using -f From: FreeBSD bugmaster To: freebsd-arm@FreeBSD.org Cc: Subject: Current problem reports assigned to freebsd-arm@FreeBSD.org X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the StrongARM Processor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 15 Mar 2010 11:07:08 -0000 Note: to view an individual PR, use: http://www.freebsd.org/cgi/query-pr.cgi?pr=(number). The following is a listing of current problems submitted by FreeBSD users. These represent problem reports covering all versions including experimental development code and obsolete releases. S Tracker Resp. Description -------------------------------------------------------------------------------- o arm/134368 arm [patch] nslu2_led driver for the LEDs on the NSLU2 o arm/134338 arm [patch] Lock GPIO accesses on ixp425 o arm/134092 arm [patch] NSLU.hints contains wrong hints for on board n 3 problems total. From owner-freebsd-arm@FreeBSD.ORG Mon Mar 15 17:50:57 2010 Return-Path: Delivered-To: freebsd-arm@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5A09C106564A for ; Mon, 15 Mar 2010 17:50:57 +0000 (UTC) (envelope-from tinguely@casselton.net) Received: from casselton.net (casselton.net [63.165.140.2]) by mx1.freebsd.org (Postfix) with ESMTP id 00BD08FC23 for ; Mon, 15 Mar 2010 17:50:56 +0000 (UTC) Received: from casselton.net (localhost [127.0.0.1]) by casselton.net (8.14.3/8.14.3) with ESMTP id o2FHotYU018884; Mon, 15 Mar 2010 12:50:55 -0500 (CDT) (envelope-from tinguely@casselton.net) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=casselton.net; s=ccnMail; t=1268675455; bh=S9UPvs+jtXyPef3tOTqQkkHByh7cCzg3+J51vpIQNJE=; h=Date:From:Message-Id:To:Subject:In-Reply-To; b=svIHOXKkls1jPz12WjAJdE0wrWg9VdeIoakQ3tCLDQku8fCfSwXJaiRUgY4MtBGIN R7lUXn3zhdtsOV0gwJ/qY/eyuKsYTK5V/4FehrFoUHL7+fvcl/J6Ggqs+vYKh9Nz0K nqbhr+XW5s79cyQMYQHWY18MsZCDHqCUw1mu0cDM= Received: (from tinguely@localhost) by casselton.net (8.14.3/8.14.2/Submit) id o2FHotdJ018883; Mon, 15 Mar 2010 12:50:55 -0500 (CDT) (envelope-from tinguely) Date: Mon, 15 Mar 2010 12:50:55 -0500 (CDT) From: Mark Tinguely Message-Id: <201003151750.o2FHotdJ018883@casselton.net> To: freebsd-arm@freebsd.org, maksverver@geocities.com In-Reply-To: <4B9A7F2D.2080202@geocities.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.3.2 (casselton.net [127.0.0.1]); Mon, 15 Mar 2010 12:50:55 -0500 (CDT) Cc: Subject: Re: Performance of SheevaPlug on 8-stable X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the StrongARM Processor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 15 Mar 2010 17:50:57 -0000 On Fri, 12 Mar 2010 18:51, Maks Verver said: > On 03/10/2010 04:53 PM, Rafal Jaworowski wrote: > > Mark, Can you confirm this worsening over time happens with a fresh > > (from scratch) kernel build (with Mark T. patch applied)? Please > > provide the scenario / steps which lead to this behaviour. > > Was this directed at me? If so, I've rebuilt the distribution from > CURRENT sources (previously, I used 8-STABLE with some patches applied) > which I believe includes Mark Tinguely's patches. > > With these patches, the problem doesn't occur for tests that I run > immediately after booting. However, if I create a new binary (either by > recompiling, which is what I did before, or simply by copying, as I > found out) then this new binary executes slowly: > > elysium# time ./test > 9.000u 0.000s 0:09.07 99.6% 40+1324k 1+0io 0pf+0w > elysium# cp test test2 > elysium# time ./test2 > 287.000u 0.000s 4:48.54 99.5% 40+1322k 0+0io 0pf+0w > > 9 seconds is still slower than it should be (Linux runs this test > program in 5.4 s) but this may well be a completely separate issue. > > I also added the KASSERT line that Mark Tinguely suggested, but I forgot > to enable the INVARIANT option when rebuilding the kernel. I'll have to > get back to you on that one. > > Kind regards, > Maks Verver. As a FYI to everyone else, I ask Maks to include a printf statement in vm_hold_free_pages(); it ensures the vm_page and the KVA are in sync on the pages that are freed. I also added a printf statement in the pmap_remove_pages() and pmap_remove_all() routines to make sure they are not being called before freeing the page. pmap_remove_pages() is for a memory map being removed. Kernel maps are global, so we can't go and clear them. pmap_remove_all() removes all references to a particular page. We cannot remove the pte entry in pmap_remove_all(), but we might be able to remove the md.pv_kva value. It seems to me that that kernel allocator should still call the pmap_[kq]remove() for this page. Worse case, we can clean the md.pv_kva and md.pv_flags when we free the page. We might get some objections from the VM people about this. --Mark Tinguely. 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