> > [...] > > so a factor of 32 less calls to cfs_fuse_write (including memdb_pwrite) > > That can be huge or not so big at all, i.e. as mentioned above, it would we > good to > measure the impact through some other metrics. > > And FWIW, I used bpftrace to count [0] with an unpatched pmxcfs, there I get > the 32 calls to cfs_fuse_write only for a new file, overwriting the existing > file again with the same amount of data (128k) just causes a single call. > I tried using more data (e.g. from 128k initially to 256k or 512k) and it's > always the data divided by 128k (even if the first file has a different size)
I observe the same thing. Seems the fuse2 use 4K block for new files, but 128K if the file already exists... _______________________________________________ pve-devel mailing list pve-devel@lists.proxmox.com https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
