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Been trying to migrate a large old site from a Ubuntu NGINX 18.04 4-core (Broadwell, IBRS)) to an Ubuntu 22.04 OLS 8-core site. Both are managed under the RunCloud management platform. Both are VPSes and don’t seem overprovisioned.
The site migration has gone fine, and the cloned site run ok, but the new OpenLiteSpeed site just seems SLOWER running PHP/WP code.
We’ve spent a while trying to identify anything related to the OS or the webhosting stack that might be a significant change in performance, but not finding anything.
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Any obvious gotchas I might be overlooking?
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Shoot RunCloud support a ticket telling about the situation. I can’t imagine why it’d be different/slower.
What exactly is slower? Frontend or backend? Have you run any diagnostics? Checked `top`? WP CLI [profile](https://github.com/wp-cli/profile-command)?