August 2010 - Darwin-dev - lists.apple.com

Re: SSH is slow
by Matevž Markovič 10 Aug '10

10 Aug '10

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Re: SSH is slow
by Dan Shoop 10 Aug '10

10 Aug '10

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[OT] Re: SSH is slow
by Alastair Houghton 10 Aug '10

10 Aug '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha1; c=relaxed; d=coriolis-systems.com; h= subject:mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; s=aug07; bh=SsxCEBpy54bM+ZIsdKIc7b4lSys=; b=km1BmiHQy4I+a248VKR97six9tAZ KmVnjL9f/0darQStmvWGQF4uYjMl9W6Env49GhbMxifMcZQAQ9J4HD/8GWvCvdjd vfzeiSvDKJVX3SPrwn4jucVOoP4+p1IMjl/pTxJS/KdWCjGrjXMRXGZ7LbdsnY24 HMOwubhpeVj1+98= On 10 Aug 2010, at 08:30, Matevž Markovič wrote: > If I connect using ssh to my computer at home from work, I have a really bad connection. It feels unresponsive, sometimes hangs for some seconds etc. Logins are sometimes quick, sometimes really slow. When I type something, it takes time for the characters to appear on my screen. Jonas is probably right, it's probably just a latency issue, but it would be worth checking that the problem isn't MTU-related, since that can cause really odd behaviour of a similar variety to the kind of thing you're reporting. See <http://alastairs-place.net/2008/09/path-mtu-proble/> Kind regards, Alastair. -- http://alastairs-place.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: SSH is slow
by Jonas Maebe 10 Aug '10

10 Aug '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 10 Aug 2010, at 09:30, Matevž Markovič 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… My router at home has port 222 open for ssh service, and this port is forwarded to internal network as port 22 (standard ssh port). I have a ADSL 1024/256 connection. Otherwise, the connection is responsive, only ssh hangs. It's unlikely that this has anything to do with Mac OS X. It seems more likely that you either have a high latency connection (you can still get high download speeds with high latency if there's not too much packet loss), that your ISP is purposefully degrading ssh connections (maybe via DPI), or a problem with your router. You can test whether it's related to Mac OS X itself by simply doing an "ssh localhost" on your home machine. If that's also slow then it's ssh/Mac OS X, otherwise it's a problem in the network. This email sent to site_archiver(a)lists.apple.com

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SSH is slow
by Matevž Markovič 10 Aug '10

10 Aug '10

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Re: iPhone calculator application...
by Alastair Houghton 09 Aug '10

09 Aug '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha1; c=relaxed; d=coriolis-systems.com; h= subject:mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; s=aug07; bh=eu0Xb0c545KYgzkrkSyEYkxnpjM=; b=mygDKJtVaNit+9siiiDJ2phLaWtG czVF1o7Xv2AmZeM8QOD8PVmx+bkk+3VmVCn1w6lEfd6SlZX8CyOF82qwIGrh9Dup PXGHDxMpZLwzR8A4mEO+pAWTZl71/tfJmy9YPILuEBVQUZKcPOjJFK95fQlCawtG QplVXxskRSNE5AA= On 9 Aug 2010, at 16:23, Arnab Ganguly wrote: > I am planning to write sample iPhone calculator application.Where can I find sample code which can help on the approach. Not on darwin-dev. Try cocoa-dev. Alastair. -- http://alastairs-place.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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iPhone calculator application...
by Arnab Ganguly 09 Aug '10

09 Aug '10

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Re: Detect Intel System?
by Duane Murphy 08 Aug '10

08 Aug '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Thank you for all of the interesting and useful answers to this question. I'm favoring the sysctl answer at this point. Thank you for all of your help, ...Duane On Aug 8, 2010, at 2:16 AM, Stephane Sudre wrote: > - there can be other CPU with the same endianess. > > - it would just be easier to check the sysctl for that > > IMHO, if the code is supposed to run only on a shipped Mac OS X > system, the cputype sysctl is good enough. Sure, it does not exist on > old OS X releases but you can just assume that if it does not exist, > then you are running on a ppc system. > > > On Sunday, August 8, 2010, Travis Siegel <tsiegel(a)mac-access.net> wrote: >> Wouldn't it be possible to simply create a sufficiently large number, then check the number to see if it's stored in big or little indian? >> Would that be enough to determine if it's i386 enough to execute? >> Alternatively, as mentioned before, you could simply include a small program that does something, such as return a value, and just execute it to see if it returns your specified value or not. If so, then presumably the hardware (or some emulation of such) can handle your i386 executable, and should be sufficient for your purposes. >> Another point of consideration is to see if you can get at the intel serial number. (remember those?) >> If the intel cpu has a serial number, then presumably it's an intel cpu (and the user hasn't disabled it in some way) and therefore your program will work properly. >> I suppose it's possible other cpus have similar (exactly the same?) method of retrieving serial numbers, but I've not explored this option, so this is only a guess that the intel retrieval method will be unique. >> Something to try though. -----BEGIN PGP SIGNATURE----- Version: PGP Desktop 10.0.2 (Build 13) Charset: us-ascii wsBVAwUBTF7Pvkrg9acQ4r2CAQjr+gf6Aq20Q9JqIvhxDCRX5HkLI4Y7SGmVgmsq qiO0uQXFCGNuHTYALvqEP5yS7l1hc9NRclGu5df3Q4w2bXJ1/36AD4b0xyfU4IeX FmGhvXhvp5wOjQPDZRysu/iFVt5mTis2M3w6jjTD3Ldd5zF4MAC5GkoOhYSp74cr MzIbOSDelGdtavc9SiwSz0Y1xAG3eD9TtiSmUDTKn/LIeQFxDMhVyJjZ89ujAQvz LUJcMOh3jG66PVEefQqINB+L4M361MAW2ITTF4pWHPgMBJ1y/4Rq8r6AFK4AvsYR hlD4udMEikrCHmtXLGtDKyx4PP9Cu9z0MZzTH3Ui8O7erXdcS/bs4Q== =hfyc -----END PGP SIGNATURE----- _______________________________________________ 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: Detect Intel System?
by Stephane Sudre 08 Aug '10

08 Aug '10

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Re: Detect Intel System?
by Travis Siegel 07 Aug '10

07 Aug '10

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… Wouldn't it be possible to simply create a sufficiently large number, then check the number to see if it's stored in big or little indian? Would that be enough to determine if it's i386 enough to execute? Alternatively, as mentioned before, you could simply include a small program that does something, such as return a value, and just execute it to see if it returns your specified value or not. If so, then presumably the hardware (or some emulation of such) can handle your i386 executable, and should be sufficient for your purposes. Another point of consideration is to see if you can get at the intel serial number. (remember those?) If the intel cpu has a serial number, then presumably it's an intel cpu (and the user hasn't disabled it in some way) and therefore your program will work properly. I suppose it's possible other cpus have similar (exactly the same?) method of retrieving serial numbers, but I've not explored this option, so this is only a guess that the intel retrieval method will be unique. Something to try though. This email sent to site_archiver(a)lists.apple.com

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