-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Like Eric, I am very concerned about CoW latency and throughput. I am almost certain that allocating new blocks and snapshot copy-on-write are _the_ hot paths in Qubes OS. In particular, I suspect that workloads such as building an image in a throwaway VM or installing packages onto a root volume that had just been shapshotted are dominated by metadata operations, rather than by in-place updates. I suspect that frequently-snapshotted volumes will observe similar behavior in general. - -- Sincerely, Demi Marie Obenour (she/her/hers) Invisible Things Lab -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEdodNnxM2uiJZBxxxsoi1X/+cIsEFAmQE/iEACgkQsoi1X/+c IsHLFxAAyWT4SlSueR15VxrwG07T9cEl7vnQwKHKWdzFBoWl0KhvyjLr52t0ip1J HPmwTVaor+53E+0bLUlgqA7G56a6PwxWWAQ6CsHHdxQ1xo3Serigkhys2hmwRq+e WPVrDSVRQLzOj/Qg6MsF2PPzdL5aNjK2QeHnWVcyXvfwZDhDCJKzz2iJC/ENjFNW X2bD3wazu6A+aFsxjLHtf5wAa0+PhppcEhUZNSgQiC9SiT5DPFabLIIi7jgb0Nlg v5GciAp1w0J+SUq2Wh4atrPR11Sj878AnJ872/Ku+pLseVu8h7N/60p8OwBm47Ak GNZlgq7XF1lien/3eFq9mfJKGc97MxveEkiqI46ankVs+bDQOlUbXriMlINEeT8r AzCar8pYx5W/xFb/gvYPnksATlOxLAaQ1jPZ1j0dIRaPtoOngtQ64TC5alRirGCK uqQ7c1Soj7D3SjahrbQkoqcyODmRoC/55Pu8Klb2l96S91rSRtvca+EV05GNXmyN eaArdGNuWPmzq6E8mQj3YrYnn18Z/x3WRr77xGVTAjUCGDPCE01+o/0G9P/+4cpv olMs1/ludL/WzbBe9scp2JK442dGwE/pcBiWI34DmxbLZTb1baG4BEX6mbDdfnpk SmIQv1RcHtbf16nvuhg+QVXnjAL5qQNiGVWxF9PTH8799wmcsdM= =/KY9 -----END PGP SIGNATURE----- -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
