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 ------------------------------------------------------------------------------ Learn how Oracle Real Application Clusters (RAC) One Node allows customers to consolidate database storage, standardize their database environment, and, should the need arise, upgrade to a full multi-node Oracle RAC database without downtime or disruption http://p.sf.net/sfu/oracle-sfdevnl _______________________________________________ leaf-devel mailing list leaf-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/leaf-devel
