is data-ordered really that much slower, I don;t think I really noticed a difference. BTW, wasn't the default data-journal in previous releases, imagine how slow that would be for you then:) On Mon, 23 Dec 2002, Tom Ball wrote: > On Mon, 2002-12-23 at 10:00, Ronald W. Heiby wrote: > > I've got a large data compilation application. It takes in a very > > large quantity of text data and produces a resulting binary file that > > is about 1.3 GB. In the mean time, it holds on the order of 2 GB of > > data in memory while operating on it to produce the output file. > > I also found 8.0 much slower for my smaller builds. One thing that's > different in 8.0 is the ext3 filesystem, which I converted to when > upgrading. By default it runs in ordered data mode, which causes writes > to disk to happen much more frequently than on ext2 filesystems. > > This is normally a goodness, because if your system crashes it takes > much less time to reboot with a working filesystem. For a build system, > however, it's okay to crash in the middle of a build because it is (or > should be) easy to start over with a clean data set. The ext3 > filesystem supports a writeback mode which works well for me. > > To turn writeback on, you need to add "data=writeback" to the build > partition's flags in fstab. IMPORTANT: if you are setting the root > partition, you need to run /sbin/mkinitrd so your initrd file has the > same setting (either overwrite the one in /boot, or create a new one and > change your grub or lilo file to point to it). > > Keep a rescue disk handy when you commit these changes! > > Tom > > > > > > -- Psyche-list mailing list Psyche-list@redhat.com https://listman.redhat.com/mailman/listinfo/psyche-list
