5 ms·

Just curious, how does a unikernel solve network latency?

• masklinn 11y ago
  The issue GP talks about comes from the cost of context-switching on a syscall (going into "kernel mode", performing the call, then going back into "application mode"). There's no context switch in a unikernel.
  • BrainInAJar 11y ago
    Well, unless you count the hypervisor context switch, which you do.
    • wmf 11y ago
      I guess in the glorious future everyone will be using SR-IOV.
    • floatboth 11y ago
      And if you need super high performance, you can run a unikernel on bare metal.
  • silly1 11y ago
    Are you assuming SRV-IOV passthrough (which has its own performance profile) ? Because normal virt -definitely- hits a context switch when it goes from unikernels virtual NIC to real NIC, if not twice.