3 ms·

Whats the difference to OSv? https://github.com/cloudius-systems/osv https://github.com/cloudius-systems/osv

by nix23 5y ago

dkjaudyeqooe 5y ago
See https://nanos.org/faq https://nanos.org/faq where there is a comparison table but it's not complete or out of date, because OSv website says: "OSv supports many managed language runtimes including unmodified JVM, Python 2 and 3, Node.JS, Ruby, Erlang as well as languages compiling directly to native machine code like Golang and Rust" This seems like a big deal on the Nanos side: "Another big difference is that Nanos keeps the kernel/user boundary. In our testing removing the large process to process context switching that general purpose operating systems still removes quite a lot of the perceived cost in other systems. We keep the internal kernel <> user switch for security purposes. Without it page protections are basically useless as an attacker can adjust the permissions themselves with privileged instructions." This would seem to me that they are slower than OSv.
convolvatron 5y ago
they look pretty similar from the outside nanos is recently written for this particular use case and uses lwip for networking osv looks like FreeBSD with some machinery around it to package single applications and run them on boot
- nix23 5y ago
  >osv looks like FreeBSD with some machinery around it to package single applications and run them on boot Just because ZFS? Because everything else is not from BSD's, it's a unikernel made to run on a hypervisor made to run linux-bin's, i really don't see a difference....or any plus to use nanos.
  - dkjaudyeqooe 5y ago
    OSv describes the project as BSD code with a Linux compatibility layer. ZFS is optional.
    - nix23 5y ago
      > OSv describes the project as BSD code with a Linux compatibility layer. Show me that. There is one little bsd folder that's it: https://github.com/cloudius-systems/osv/tree/master/bsd https://github.com/cloudius-systems/osv/tree/master/bsd Absolutely nothing written about BSD: https://github.com/cloudius-systems/osv https://github.com/cloudius-systems/osv
  - convolvatron 5y ago
    I was just looking at the source, there are big hunks of freebsd kernel in there, but I don't know the real functional decomposition. didn't suggest that nanos was better - if it does indeed use big hunks of freebsd code, that's had considerably more cooking time than nanos.

Whats the difference to OSv? https://github.com/cloudius-systems/osv https://github.com/cloudius-systems/osv

by nix23 5y ago

Whats the difference to OSv? https://github.com/cloudius-systems/osv https://github.com/cloudius-systems/osv

See https://nanos.org/faq https://nanos.org/faq where there is a comparison table but it's not complete or out of date, because OSv website says: "OSv supports many managed language runtimes including unmodified JVM, Python 2 and 3, Node.JS, Ruby, Erlang as well as languages compiling directly to native machine code like Golang and Rust" This seems like a big deal on the Nanos side: "Another big difference is that Nanos keeps the kernel/user boundary. In our testing removing the large process to process context switching that general purpose operating systems still removes quite a lot of the perceived cost in other systems. We keep the internal kernel <> user switch for security purposes. Without it page protections are basically useless as an attacker can adjust the permissions themselves with privileged instructions." This would seem to me that they are slower than OSv.

convolvatron 5y ago

they look pretty similar from the outside nanos is recently written for this particular use case and uses lwip for networking osv looks like FreeBSD with some machinery around it to package single applications and run them on boot

nix23 5y ago
>osv looks like FreeBSD with some machinery around it to package single applications and run them on boot Just because ZFS? Because everything else is not from BSD's, it's a unikernel made to run on a hypervisor made to run linux-bin's, i really don't see a difference....or any plus to use nanos.
- dkjaudyeqooe 5y ago
  OSv describes the project as BSD code with a Linux compatibility layer. ZFS is optional.
  - nix23 5y ago
    > OSv describes the project as BSD code with a Linux compatibility layer. Show me that. There is one little bsd folder that's it: https://github.com/cloudius-systems/osv/tree/master/bsd https://github.com/cloudius-systems/osv/tree/master/bsd Absolutely nothing written about BSD: https://github.com/cloudius-systems/osv https://github.com/cloudius-systems/osv
- convolvatron 5y ago
  I was just looking at the source, there are big hunks of freebsd kernel in there, but I don't know the real functional decomposition. didn't suggest that nanos was better - if it does indeed use big hunks of freebsd code, that's had considerably more cooking time than nanos.