August 2009 - Darwin-dev - lists.apple.com

Re: looking for System APIs for load monitoring
by Terry Lambert 18 Aug '09

18 Aug '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Have you looked at the sources to ps or top? (e..g, http://opensource.apple.com/source/top/top-39/) -- Terry _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… On Aug 18, 2009, at 4:32 AM, Mo McRoberts <lists(a)ilaven.net> wrote: On Tue, Aug 18, 2009 at 08:30, Marc Lohse<Lohse(a)mpimp-golm.mpg.de> wrote: The kind of information i need is essentially what's supplied by the ps -axv command. Please be aware the the APIs used by these programs are considered SPI, and are therefore unstable from software update to software update, and, as I noted the other day, at least in Leopard, they are not even guaranteed to be 64 bit clean. Portability of the code to Tiger and earlier versions is also problematic, as the SPI in use for this changed in that time frame (i.e. your code will not work on all of Tiger, Leopard, and later simultaneously in all bitness, even if you compile from source each time). Despite what he wants or doesn't want, popen'ing the ps command and using the POSIX mandated -A option for "all processes" and the POSIX mandated -o option to control output formatting to make it easy to parse the program output are your best bets to ensure binary compatibility. We (a) have to maintain POSIX compliance for the ps command, (b) will rev the ps command in lockstep with the changes to the SPI, so you are reasonably assured it will keep working over SPI changes, or be fixed quickly, (c) POSIX itself rarely changes the list of supported options to command line commands, and (d) your code will be portable to other POSIX compliant OSs, without modification. This email sent to site_archiver(a)lists.apple.com

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Re: Reading system framework information through Stabs file ?
by Arnab Ganguly 18 Aug '09

18 Aug '09

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Re: Reading system framework information through Stabs file ?
by Terry Lambert 18 Aug '09

18 Aug '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: which pages of the file are in the cache
by Fritz Anderson 18 Aug '09

18 Aug '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 18 Aug 2009, at 8:17 AM, Joel Reymont wrote: I'm tasked with improving Firefox startup performance on Mac OSX. — F _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Is there a way to find out what pages of a file are in the filesystem cache? Is this a good list to discuss IO performance? In the spirit of what-have-you-done, is your question based on performance statistics from Shark? Particularly the Time Profile (All Thread States) and System Trace techniques? Does the File Activity template in Instruments tell you anything about locality of access? Second-guessing the filesystem sounds like a world of hurt, dependent on OS, hardware, and differences between runs. Maybe there are in-app strategies that will pay off before you get into it. This email sent to site_archiver(a)lists.apple.com

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which pages of the file are in the cache
by Joel Reymont 18 Aug '09

18 Aug '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:content-type :content-transfer-encoding:subject:date:message-id:to:mime-version :x-mailer; bh=rzpVmJe0mBaFrji2pNnVsc6QtCNAGF43jC1VTzvMgWU=; b=szA8c3wz2wxCBb9t0gh5YAy3kDeO9N82bXdKGT007q1457xQYEO6/fL+cdfc1yNdVq xwaIeSffARqpkN1AJGkIJWtEdbFKUB4iWoKJNgO6iYGo0p4H9T8sBuUk4kMz0SUBXAjn 64eNEDOB0CrW3b33H7prFWFGs3QtI2AoT+vjQ= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:content-type:content-transfer-encoding:subject:date:message-id :to:mime-version:x-mailer; b=czagot5hC6xryVN+Zgb3yNCJu3erKuuLavbTXpQ1xg4HgmJ2FaV5USfiJkAKIzDqx+ 8KJNSB61h6xKUi/t63cE0xJPFL3rZptfEN8jhaahtjMNO/8Yj9Y9CiIoOrSv0VX1c+qr YggK3qjQRTnN55js/XQG9MHz22HsVKD0HG1Xo= Folks, I'm tasked with improving Firefox startup performance on Mac OSX. Is this a good list to discuss IO performance? Thanks, Joel --- making mac firefox run faster http://twitter.com/wagerlabs _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Is there a way to find out what pages of a file are in the filesystem cache? This email sent to site_archiver(a)lists.apple.com

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Re: Reading system framework information through Stabs file ?
by Jean-Daniel Dupas 18 Aug '09

18 Aug '09

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Re: Reading system framework information through Stabs file ?
by Arnab Ganguly 18 Aug '09

18 Aug '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=BlmeyQWyHmlWuEvRtboXtbQwlTibvzJL5wcsex51tyU=; b=wmMEw0i7csJ8jUqjpzqdnfC3nt+pM/bhlfIWfIBiO8IgS+xyYYbfUPSdDx6BNBMKg4 8kLSJKvTGhtR3y2/tag1sDemadFfKnRJxF/xzUCExXtIN9PD5Jk4W8nNMax4gl3xwvl/ Y1nk+pvghxJGDU8wLbphv8tSui3VhsM416XOM= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=JuGUpvzk3rH+fgNKaFspQE71meuZWftP//CGKduBWXOeXptD5dh5Rfy+WydgFrjqwc pIVrUnAyaYXJ5JxhaSbVREV15gYhM3Gp+RqNob830MvujVkizVBiOUrDH6xRN+swsTvF uTGxGEcDidL1ymYYTLqa6ZCp6XXMvYPgBNXmA= _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: Reading system framework information through Stabs file ?
by Jonas Maebe 18 Aug '09

18 Aug '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 18 Aug 2009, at 12:58, Arnab Ganguly wrote: Jonas _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… I am considering older formats.This product is pretty old and supported in older versions of Mac. Again if we consider "DWARF" how the system framework symbols are resolved ? I tried dwarfdump but the output doesn't shows any system framework symbols when I compare with Apple report. The system frameworks do not contain debugging information (stabs nor DWARF), but only plain symbol information. You can extract this information by reading the Mach-O symbol table. This email sent to site_archiver(a)lists.apple.com

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Re: looking for System APIs for load monitoring
by Mo McRoberts 18 Aug '09

18 Aug '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Tue, Aug 18, 2009 at 08:30, Marc Lohse<Lohse(a)mpimp-golm.mpg.de> wrote: > The kind of information i need is essentially what's supplied by the ps -axv command. Have you looked at the sources to ps or top? (e..g, http://opensource.apple.com/source/top/top-39/) M. -- http://nevali.net _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: Reading system framework information through Stabs file ?
by Arnab Ganguly 18 Aug '09

18 Aug '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=42Z8uZZqalP2YXosjlwVe+gQLYgJFTgAgP47a/DhQDk=; b=xeWY2YbMS0jBO3PltuNqWFQqjOuwVYaQAZLHDYhbJgFP7n9l1XKYgYR/YRwLihlPYK Y7BZzyatX22kJ77JdiUlQ+lWmgMC1LK6CI5huSN4RwMXRsCENxZ4WgJjALkQAM0DlxPb 46QJ5wjUdBm5VzlC6KViy8Ej5e/RRr4uav7Y4= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=i9E6inalbky2oxabmZ0PmaEkFcwYaED0lsZPbWIGmIQJmq78JHAj275HZX7D7wAXbM YfsSNg2iWQBZ5YUL+YbUhWxBkLSKhCf23vc5qIyLV7TGFiNV+7L1FxzS1MpZfShTmKYx +4R4x06GqNwH4o0x2LONg84CAYyuioFaJ2yCw= _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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