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November 29, 2022, 05:34:40 PM

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20 November 2022: Continued LEX Issues and Periodic Outages

Started by Tarkus, November 20, 2022, 09:22:48 PM

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Tarkus

The LEX is presently back up, after it became necessary to take it down yesterday (November 19th) due to a RAM usage spike that locked up the server.  Note, however though we are still having to carefully monitor the server's utilization, as this has become a recurring issue.  The site may continue to be somewhat unreliable, and we may have to take the LEX offline again if the issue becomes severe enough again.

The issues are inherent to the LEX software, particularly related to its session handling, and this is something that especially flares up when a user opens up the Dependency Tracker, and also, occasionally with the search features.  Dependency Tracker calls on larger files, such as the LEX Superior Collections and the BSC Seaports, have been especially prone to this, and we've sadly had to either remove Dependency Tracker support on these files, or, in the case of the Superior Collections (since they're entirely Dependency Tracker-based), lock them entirely.

We are still evaluating possible solutions, but in the meanwhile, all we can do is advise patience when using SC4D and the LEX in their current configuration.

Thank you all for your continued support of SC4 Devotion and SC4 as a whole.

Alex (Tarkus)
SC4D Site Owner

Tarkus

LEX usage put the server's RAM utilization into the red again (98.5% utilization), so I've had to ice it once more.  It'll be down for probably the next 36 hours.

As I mentioned elsewhere recently, the current issues have no bearing on SC4D's long-term future.  Our hosting contract is paid through July 2025, and while the RAM usage issues with the LEX's software are severe enough to require it to be completely replaced, we have plans underway for its replacement.  Until that replacement is ready, however (and there is no ETA), these sorts of "rolling blackouts" are going to be an unfortunate reality for awhile, whether they be preemptive (as in this case), or because the LEX pegs the RAM usage to 100% and locks up the whole server.  Preemptively taking it down is preferred, as it still allows the rest of SC4D to remain accessible.

Some interim solutions are being discussed, but we'd like to avoid doing anything particularly involved on that end (i.e. a "temporary LEX") if at all possible.

Thank you all for your patience and continued support.

Alex (Tarkus)
SC4D Site Owner