| 00:01.36 | mickey|zzZZzz | need to deconstruct the MACHINE_CLASS stuff, now that 01 and 02 are doomed to be seperate machines anyways |
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| 00:46.40 | Spyro | hi! |
| 00:47.18 | Spyro | im just wondering what the problem with embedding php in dokuwiki is? |
| 00:47.28 | Spyro | shit wrong channel |
| 00:47.33 | Spyro | :-) |
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| 05:31.14 | CIA-1 | 03Mike Westerhof <mwester@dls.net> 07org.openembedded.dev * r0faec81b54 10openembedded.git/packages/ftpd-topfield/ (files/usb-header-name-2-6-23.patch ftpd-topfield_0.7.5.bb): ftpd-topfield: add patch for 2.6.23 kernel headers |
| 06:34.43 | CIA-1 | 03Mike Westerhof <mwester@dls.net> 07org.openembedded.dev * r1bbdc74a53 10openembedded.git/packages/opkg/ (4 files in 2 dirs): |
| 06:34.43 | CIA-1 | opkg_wget_nogpg: dramatically reduce memory footprint, too dodge OOM killer. |
| 06:34.43 | CIA-1 | - eliminate unnecessary libopkg.so |
| 06:34.43 | CIA-1 | - use vfork() instead of fork() and system() |
| 06:34.43 | CIA-1 | - make specifying of alternate tmpdir actually work. |
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| 07:58.32 | luke-jr | uh |
| 07:58.37 | luke-jr | I thought vfork was deprecated |
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| 09:51.00 | pb_ | luke-jr: depends who you talk to, I guess. vfork certainly has its uses. |
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| 14:43.07 | cdbot2 | * * OE Bug 4948 has been created by prices(AT)dflytech.com |
| 14:43.09 | cdbot2 | * * openwrt-sdk.conf points to generic-uclibc.conf which doesn't exist |
| 14:43.11 | cdbot2 | * * http://bugs.openembedded.net/show_bug.cgi?id=4948 |
| 14:43.41 | mwester | vfork() is like a vampire; it won't die. I rather suspect that someone will have to create a version of fork() that doesn't copy the entire address space before vfork() can be properly buried. Until then, it will live on... |
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| 16:42.03 | Crofton | my vfork understanding is Linux basically does vfork with fork ..... |
| 16:50.17 | mwester | They threaten. |
| 16:50.21 | mwester | But not so far. |
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| 16:53.03 | Crofton | interesting |
| 16:53.13 | Crofton | what is the difference? |
| 16:56.29 | mwester | fork() creates a new process that has its own virtual memory mapping, that just happen to map to the same pages as the parent process -- but they are unique page tables and all that. vfork() creates a child that actually shares the parents page tables and stuff -- so a vfork() is highly dangerous if not coded carefully, but a fork() runs afoul of the OOM killer because even though it uses no extra memory (beyond the extra set of page tables) it *could |
| 16:56.29 | mwester | * use extra RAM - and that invokes the wrath of the almighty OOM killer. |
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| 17:24.12 | pb_ | linux has only fairly recently gained vfork() support in the first place. it would be a bit of a bizarre retrograde step for them to remove it again. |
| 17:24.16 | pb_ | oh well, crazy kernel h4x0rs. |
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| 18:03.48 | luke-jr | pb_: I recall reading that fork() was just as efficient as vfork() now |
| 18:13.59 | mwester | luke-jr: It's not, but efficiency is not the real issue in this case; it is the need to dodge the murderous rampage of the OOM killer. |
| 18:26.08 | luke-jr | >_< |
| 18:36.47 | pb_ | mwester: I'm a bit surprised that the OOM killer gets so excited about potentially-overcommitted memory. Is that a new change? |
| 18:37.32 | pb_ | I'm fairly sure it never used to do that: if you had /proc/sys/vm/overcommit_memory set to 1, you could happily mmap() several times the amount of actual memory that you had available, so long as you didn't actually dirty the pages. |
| 18:37.52 | mwester | That still works. |
| 18:38.11 | pb_ | So why is the fork() case different? |
| 18:38.30 | mwester | But I think that core system utilities essential to the operation of the base image should not require non-standard kernel settings. |
| 18:39.31 | pb_ | Ah, I see. You mean you want to make it work even if overcommit_memory is set to zero? |
| 18:39.38 | mwester | That's the default. |
| 18:40.08 | pb_ | Yes, indeed. Personally, I always considered setting to one to just be one of those things that you had to do to get a working system. |
| 18:40.20 | mwester | Well, I tend to agree. |
| 18:40.34 | pb_ | Not that I think it would be a bad thing if you didn't have to do that, of course. Making the system utilities use vfork() is a fine idea. |
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| 18:41.16 | pb_ | But, for myself, I was always happy enough to just set that variable to one as part of the startup process and then live with it. :-} |
| 18:42.57 | mwester | Frankly, I wish there was a way to provide a per-executable or at least per-process exception. e.g. I *know* that opkg will never actually modify the parent's memory pages, so there's no danger -- if I could mark it as such, it would save a lot of trouble. |
| 18:43.41 | mwester | I think the intent of the OOM Killer is good, but it's implementation is rather horrid. |
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| 18:43.59 | mwester | must run off for a bit, back later. |
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| 19:45.44 | pb_ | mickeyl: are you familiar with the feedparser module by any chance? |
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| 20:05.45 | josch | hey! how do i create a *.sig file for my openembedded repository |
| 20:11.39 | CIA-1 | 03Koen Kooi <koen@openembedded.org> 07org.openembedded.dev * r36f71557a9 10openembedded.git/packages/gimp/gimp.inc: gimp: add gdk-pixbuf-csource-native to DEPENDS |
| 20:11.47 | CIA-1 | 03Koen Kooi <koen@openembedded.org> 07org.openembedded.dev * r793de93f23 10openembedded.git/packages/linux/ (linux-omap/omap3evm/defconfig linux-omap_git.bb): linux-omap git: update evm defconfig |
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