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Disable the memory information in /tps unless argument is passed

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Memory usage is a pretty useless value in any modern garbage collector
as the way memory is used makes this information not representive of
any actionable data.

In the recommended GC flags, this memory value will constantly rise until
it is near max and then goes down. This is perfectly normal and expected.

Having this information shown will lead to confusion.

Plus, many servers give this command to end users, which now really might
not want to expose this memory data.

So this disables it unless /tps mem is used, and also requires a permission
node to even run this subcommand.
This commit is contained in:
Aikar 2020-06-28 01:29:54 -04:00
parent d871ae80fe
commit 20e92f90d4
No known key found for this signature in database
GPG key ID: 401ADFC9891FAAFE
1 changed files with 11 additions and 4 deletions
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15
Spigot-Server-Patches/0023-Further-improve-server-tick-loop.patch
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@ -162,10 +162,10 @@ index e531fe5e77901e6478554c6269a83028e391db5f..0d28a442e0ffb524140208710b253ca8
{
diff --git a/src/main/java/org/spigotmc/TicksPerSecondCommand.java b/src/main/java/org/spigotmc/TicksPerSecondCommand.java
index 9cd57c9d5fe59ceb2cd307e4e1a2052c9ac428fe..f70173827feb0e896e540aec0873886810627c46 100644
index 9cd57c9d5fe59ceb2cd307e4e1a2052c9ac428fe..7218f23df4d06ff1ca612286e4a404246389ab18 100644
--- a/src/main/java/org/spigotmc/TicksPerSecondCommand.java
+++ b/src/main/java/org/spigotmc/TicksPerSecondCommand.java
@@ -26,22 +26,23 @@ public class TicksPerSecondCommand extends Command
@@ -26,22 +26,30 @@ public class TicksPerSecondCommand extends Command
return true;
}
@ -180,18 +180,25 @@ index 9cd57c9d5fe59ceb2cd307e4e1a2052c9ac428fe..f70173827feb0e896e540aec08738868
+
+ for ( int i = 0; i < tps.length; i++) {
+ tpsAvg[i] = format( tps[i] );
+ }
+ sender.sendMessage(ChatColor.GOLD + "TPS from last 1m, 5m, 15m: " + org.apache.commons.lang.StringUtils.join(tpsAvg, ", "));
+ if (args.length > 0 && args[0].equals("mem") && sender.hasPermission("bukkit.command.tpsmemory")) {
+ sender.sendMessage(ChatColor.GOLD + "Current Memory Usage: " + ChatColor.GREEN + ((Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory()) / (1024 * 1024)) + "/" + (Runtime.getRuntime().totalMemory() / (1024 * 1024)) + " mb (Max: " + (Runtime.getRuntime().maxMemory() / (1024 * 1024)) + " mb)");
+ if (!hasShownMemoryWarning) {
+ sender.sendMessage(ChatColor.RED + "Warning: " + ChatColor.GOLD + " Memory usage on modern garbage collectors is not a stable value and it is perfectly normal to see it reach max. Please do not pay it much attention.");
+ hasShownMemoryWarning = true;
+ }
}
- sender.sendMessage( sb.substring( 0, sb.length() - 2 ) );
- sender.sendMessage(ChatColor.GOLD + "Current Memory Usage: " + ChatColor.GREEN + ((Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory()) / (1024 * 1024)) + "/" + (Runtime.getRuntime().totalMemory() / (1024 * 1024)) + " mb (Max: "
- + (Runtime.getRuntime().maxMemory() / (1024 * 1024)) + " mb)");
+ sender.sendMessage(ChatColor.GOLD + "TPS from last 1m, 5m, 15m: " + org.apache.commons.lang.StringUtils.join(tpsAvg, ", "));
+ sender.sendMessage(ChatColor.GOLD + "Current Memory Usage: " + ChatColor.GREEN + ((Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory()) / (1024 * 1024)) + "/" + (Runtime.getRuntime().totalMemory() / (1024 * 1024)) + " mb (Max: " + (Runtime.getRuntime().maxMemory() / (1024 * 1024)) + " mb)");
+ // Paper end
return true;
}
- private String format(double tps)
+ private boolean hasShownMemoryWarning; // Paper
+ private static String format(double tps) // Paper - Made static
{
return ( ( tps > 18.0 ) ? ChatColor.GREEN : ( tps > 16.0 ) ? ChatColor.YELLOW : ChatColor.RED ).toString()