Comments on: Building a kernel on the eeepc. http://www.codemonkey.org.uk/2009/01/07/building-kernel-eeepc/ Dave Jones' Linux & opensource stuff. Sun, 04 Jul 2010 17:35:25 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: Artem S. Tashkinov http://www.codemonkey.org.uk/2009/01/07/building-kernel-eeepc/comment-page-1/#comment-58 Artem S. Tashkinov Fri, 09 Jan 2009 19:49:35 +0000 http://www.codemonkey.org.uk/?p=57#comment-58 Almost certainly you used GCC 4.3.x for compiling. If you had used GCC 3.4.x it would have probably taken three times less time. Almost certainly you used GCC 4.3.x for compiling. If you had used GCC 3.4.x it would have probably taken three times less time.

]]> By: kmike http://www.codemonkey.org.uk/2009/01/07/building-kernel-eeepc/comment-page-1/#comment-56 kmike Fri, 09 Jan 2009 08:28:33 +0000 http://www.codemonkey.org.uk/?p=57#comment-56 In fact the SSD on the Aspire One is extremely slow when writing, too, so it must be something else. Maybe the Celeron fails here, or maybe me setting dirty_writeback_centisecs to 15000 has helped? On the related note: http://kernelslacker.livejournal.com/132087.html?thread=680439#t680439 In fact the SSD on the Aspire One is extremely slow when writing, too, so it must be something else. Maybe the Celeron fails here, or maybe me setting dirty_writeback_centisecs to 15000 has helped?

On the related note:
http://kernelslacker.livejournal.com/132087.html?thread=680439#t680439

]]> By: davej http://www.codemonkey.org.uk/2009/01/07/building-kernel-eeepc/comment-page-1/#comment-53 davej Fri, 09 Jan 2009 04:46:09 +0000 http://www.codemonkey.org.uk/?p=57#comment-53 tmpfs wouldn't help, because it's crippled with RAM too. Only 1GB iirc. (It's off right now, and I'm too lazy to power it up to check). -pipe .. I'm pretty sure the kernel build does that by default. Again, I'm too lazy to check right now. And removable SSD.. I think the 700 series was soldered to the board. not sure at all about the 900 series. tmpfs wouldn’t help, because it’s crippled with RAM too. Only 1GB iirc.
(It’s off right now, and I’m too lazy to power it up to check).

-pipe .. I’m pretty sure the kernel build does that by default. Again, I’m too lazy to check right now.

And removable SSD.. I think the 700 series was soldered to the board. not sure at all about the 900 series.

]]> By: Bryan http://www.codemonkey.org.uk/2009/01/07/building-kernel-eeepc/comment-page-1/#comment-51 Bryan Thu, 08 Jan 2009 20:18:41 +0000 http://www.codemonkey.org.uk/?p=57#comment-51 How did you test writes? dd? I don't suppose you can have the Makefile write object code to a tmpfs mount? Maybe gcc -pipe will help a little. Also, out of curiosity, is the SSD replacable? It's not a hardwired NAND flash chip (like in the OLPC) is it? Of course then it would be super awesome because you could use jffs2 and writes wouldn't suck because you wouldn't have lousy hardware wear leveling or whatever goofiness they use that is slowing down the write speed. How did you test writes? dd?

I don’t suppose you can have the Makefile write object code to a tmpfs mount?

Maybe gcc -pipe will help a little. Also, out of curiosity, is the SSD replacable? It’s not a hardwired NAND flash chip (like in the OLPC) is it? Of course then it would be super awesome because you could use jffs2 and writes wouldn’t suck because you wouldn’t have lousy hardware wear leveling or whatever goofiness they use that is slowing down the write speed.

]]> By: davej http://www.codemonkey.org.uk/2009/01/07/building-kernel-eeepc/comment-page-1/#comment-48 davej Thu, 08 Jan 2009 16:52:47 +0000 http://www.codemonkey.org.uk/?p=57#comment-48 hdparm only benchmarks reads, which aren't too shabby. Where this ssd sucks, is writes. They take forever. hdparm only benchmarks reads, which aren’t too shabby. Where this ssd sucks, is writes. They take forever.

]]> By: Bryan http://www.codemonkey.org.uk/2009/01/07/building-kernel-eeepc/comment-page-1/#comment-47 Bryan Thu, 08 Jan 2009 16:47:59 +0000 http://www.codemonkey.org.uk/?p=57#comment-47 It must be the SSD, because my AMD Geode GX + 4200 rpm HDD does the compile in about an hour (for the stock kernel). What does hdparm give for performance values? It sounds to me like the 901 is a waste of money. It must be the SSD, because my AMD Geode GX + 4200 rpm HDD does the compile in about an hour (for the stock kernel).

What does hdparm give for performance values? It sounds to me like the 901 is a waste of money.

]]> By: Valerie Aurora http://www.codemonkey.org.uk/2009/01/07/building-kernel-eeepc/comment-page-1/#comment-46 Valerie Aurora Thu, 08 Jan 2009 15:18:19 +0000 http://www.codemonkey.org.uk/?p=57#comment-46 I am either aghast or in awe. No, no, I'm aghast. I am either aghast or in awe. No, no, I’m aghast.

]]> By: davej http://www.codemonkey.org.uk/2009/01/07/building-kernel-eeepc/comment-page-1/#comment-45 davej Thu, 08 Jan 2009 12:15:42 +0000 http://www.codemonkey.org.uk/?p=57#comment-45 single core celeron + crap first gen SSD = fail. single core celeron + crap first gen SSD = fail.

]]> By: kmike http://www.codemonkey.org.uk/2009/01/07/building-kernel-eeepc/comment-page-1/#comment-44 kmike Thu, 08 Jan 2009 07:14:13 +0000 http://www.codemonkey.org.uk/?p=57#comment-44 It certainly took much much less on Acer Aspire One w/512MB RAM and 8GB SSD. Less than 2 hours I'd think, but that was with the concurrency level 2. It certainly took much much less on Acer Aspire One w/512MB RAM and 8GB SSD. Less than 2 hours I’d think, but that was with the concurrency level 2.

]]> By: davej http://www.codemonkey.org.uk/2009/01/07/building-kernel-eeepc/comment-page-1/#comment-43 davej Thu, 08 Jan 2009 05:13:37 +0000 http://www.codemonkey.org.uk/?p=57#comment-43 Yeah 'a week or so' is my guess too. I think the ssd might die before it completes :) Yeah ‘a week or so’ is my guess too. I think the ssd might die before it completes :)

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