Load Balancing in Ceph: Load Balancing With Pseudorandom Placement - - PowerPoint PPT Presentation

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Load Balancing in Ceph: Load Balancing With Pseudorandom Placement - - PowerPoint PPT Presentation

Sep 03, 2022 381 likes •513 views

Load Balancing in Ceph: Load Balancing With Pseudorandom Placement Esteban Molina-Estolano, Carlos Maltzahn, Scott Brandt University of California, Santa Cruz The Load Balancing Problem Pseudorandom placement for distributed storage

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Load Balancing in Ceph:

Load Balancing With Pseudorandom Placement

Esteban Molina-Estolano, Carlos Maltzahn, Scott Brandt University of California, Santa Cruz

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The Load Balancing Problem

  • Pseudorandom placement for distributed

storage systems has several advantages

  • Problem: pseudorandom placement makes

load balancing harder

  • Research platform: Ceph, object-based

storage system developed at UCSC

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Coincidental overload

clients primary replicas

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Primary switching

clients replicas primaries

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Read flash crowd

clients primary replicas

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Read shedding

clients primary replicas

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Read shedding

clients primary replicas

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Write flash crowd

clients primary replicas

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Write shedding

clients primary replicas

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Write shedding

clients primary replicas

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Serialization: Easy with POSIX HPC I/O extensions, complicated otherwise

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Preliminary Results

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Preliminary Results