Am Donnerstag, 6. Januar 2011, 15:44:37 schrieb KP Kirchdoerfer: > Am Donnerstag, 6. Januar 2011, 15:06:42 schrieb Andrew: > > 06.01.2011 15:56, KP Kirchdoerfer пишет: > > > Hi; > > > > > > this is from an old mail, but I tested today what happens if > > > Bering-uClibc3 runs out of memory and what happens on Bering-uClibc4 > > > box. > > > > > > Am Samstag, 12. Juni 2010, 20:17:49 schrieb Andrew: > > >> Hi. > > >> I just finished migration from compressed minix initrd to initramfs > > >> that uses compressed as cpio.gz archive with files. > > >> I'm done this due to several reasons: > > >> 1) Support for multiple initrd files (so, it'll be possible to split > > >> initrd module packages); > > >> 2) It's much easier to repack .cpio archive, and minix driver can be > > >> excluded from kernels (both LEAF and host) > > >> > > >> Due to migration I omitted diverting of rootfs into separate ramdisk - > > >> IMHO it's really unuseful in that case; rootfs with it's default size > > >> will take up to half of available RAM during filling - so it'll be > > >> enough big, and it'll .never consume all available memory. (I check > > >> this, it's working) > > >> > > >> One of it's cons that I found - there is no initramfs usage statistics > > >> in output of 'df'. > > > > > > I simulated running out of space with dd > > > dd if=/dev/zero of=output.file bs=1024 count=1024 > > > filling up the memory to the max. > > > > > > If a Bering-uClibc3 box runs out of memory the dd command fails with > > > the message "no disk on space" and refused to generate the last MB. On > > > a Bering-uClibc4 it starts to kill processes: > > > [36521.153494] Out of memory: kill process 2809 (mini_httpd) score 87 > > > or a child > > > [36521.160859] Killed process 2809 (mini_httpd) vsz:696kB, > > > anon-rss:88kB, file- rss:180kB > > > [36521.190261] Out of memory: kill process 2228 (dnsmasq) score 85 or a > > > child [36521.197453] Killed process 2228 (dnsmasq) vsz:680kB, > > > anon-rss:80kB, file- rss:256kB > > > [36521.219629] Out of memory: kill process 2897 (aiccu) score 37 or a > > > child [36521.226586] Killed process 2897 (aiccu) vsz:4796kB, > > > anon-rss:120kB, file- rss:264kB > > > > > > This is a serious pb and it may happen that a remote box is unavailable > > > even for login via ssh, so you can't just reboot it. > > > > > > Something I've overlooked? > > > kp > > > > Hmm, it looks like initramfs behavior was changed from 2.6.32 kernel, > > and now it hasn't limit in half of available memory. > > We can switch back to rootfs on tmpfs, this will require some init > > scripts modification. > > I found a text which describes the pb's I found (don't know how old it is) > > http://opensource.dyc.edu/ramdisk-vs-ramfs > > Switching back seems to provide a more stable environement > kp
Andrew; can/will you make the changes necessary? I guess you're the one who knows best what has changed moving to initramfs (only) and what needs to be done to have initramfs with rootfs. I consider the issue described above as serious and like to get it solved for beta2. Anything else that anyone considers as showstopper for a new beta version? kp ------------------------------------------------------------------------------ Gaining the trust of online customers is vital for the success of any company that requires sensitive data to be transmitted over the Web. Learn how to best implement a security strategy that keeps consumers' information secure and instills the confidence they need to proceed with transactions. http://p.sf.net/sfu/oracle-sfdevnl _______________________________________________ leaf-devel mailing list leaf-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/leaf-devel
