When comparing Rumprun vs ClickOS, the Slant community recommends Rumprun for most people. In the question“What are the best unikernels?” Rumprun is ranked 1st while ClickOS is ranked 5th. The most important reason people chose Rumprun is:
Rumprun is multiplatform and can run on different types of platforms, including hypervisors (such as Xen and KVM) as well as running on bare hardware.
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Pros
Pro Can run on bare hardware as well as hypervisors
Rumprun is multiplatform and can run on different types of platforms, including hypervisors (such as Xen and KVM) as well as running on bare hardware.
Pro Can be integrated to existing systems
Rump provides kernel-quality drivers for a variety of use-cases from filesystem to PCI device drivers. Because of this, they can be integrated into existing systems or can be run as standalone unikernels on hypervisors.
Pro Can run a large number of instances concurrently and cheaply
More than 100 instances of ClickOS can be run concurrently while saturating only a 10GB pipe on an inexpensive server.
Pro Great performance
Benchmarks have shown that ClickOS has great performance. It boots quickly (averages at about 20milliseconds) and has very little delay (about 45 microseconds).
Cons
Con Has some complexity added because it's not based on a language with process isolation
Since C and C++ (with which Rumprun is built) have no language level isolation, Rumprun doesn't have process isolation either. Because of this, sensitive components have to be split into different nodes, isolated by either different virtual machines or different computers.
Con Has some complexity added because it's not based on a language with process isolation
Since C and C++ (with which ClickOS is built) have no language level isolation, ClickOS doesn't have process isolation either. Because of this, sensitive components have to be split into different nodes, isolated by either different virtual machines or different computers.