Comprehensive and Detailed Explanation From Exact Extract:
Portworx requires swap to be disabled on Linux hosts where it runs. Disabling swap is necessary because swap usage can cause unpredictable latency and performance degradation for storage operations. Portworx relies on consistent and predictable I/O performance for managing block devices and volumes, which is incompatible with the potential delays caused by swapping memory pages to disk. Additionally, many Kubernetes environments recommend disabling swap to meet Kubernetes scheduler requirements, aligning with Portworx’s needs. Portworx installation and system requirements documentation explicitly state that swap should be disabled on nodes running Portworx to ensure cluster stability, optimal performance, and predictable behavior of storage operations【Pure Storage Portworx System Requirements†source】.
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