On Thu, Mar 07, 2024 at 09:28:13AM -0800, Bart Van Assche via cfarm-users wrote: > > On 3/7/24 01:30, Martin Guy via cfarm-users wrote: > >which usually begins to degrade above 80% and seriously above 90% if > >I remember correctly. > I think that there is a significant difference between log-structured > and overwrite-in-place filesystems with regard to performance if a > filesystem is almost full. I think the above numbers come from the > following paper: Rosenblum, Mendel, and John K. Ousterhout. "The design > and implementation of a log-structured file system." ACM Transactions on > Computer Systems (TOCS) 10, no. 1 (1992): 26-52.
Disks were 50MB..150MB in those days. gcc110: $ df -h . Filesystem Size Used Avail Use% Mounted on /dev/md4 1.6T 1.5T 60G 97% /home gcc135: $ df -h . Filesystem Size Used Avail Use% Mounted on /dev/mapper/centos_gcc135-home 25T 4.1T 21T 17% /home gcc120: $ df -h . Filesystem Size Used Avail Use% Mounted on /dev/mapper/almalinux_gcc120-root 11T 962G 9.5T 10% / (Yes, not all our machines have too small disk). Segher _______________________________________________ cfarm-users mailing list cfarm-users@lists.tetaneutral.net https://lists.tetaneutral.net/listinfo/cfarm-users
