Technical advices when number of journal increases in a single install of OJS3?

Our historic experience is with OJS2 rather than OJS3. That said, we use a couple different server profiles, each with 20 - 40 journals:

  • Profile 1
    • CPU: 4 core (typical load 20% - 50%)
    • RAM: 8 GB (PHP memory_limit 512MB)
  • Profile 2
    • CPU: 1 core (typical load 15% - 35%)
    • RAM: 4 GB (PHP memory_limit 2G)

We use a RHEL-flavored OS. These servers have typically had minimal memory usage, the only increase from PHP’s default limit (of 128M) came when we were performing large imports/exports.

Disk usage depends entirely on journal content, and ranges from 21 GB to 147 GB.

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