From a72b5194409c8d39e6f858d2372576d79fd5d036 Mon Sep 17 00:00:00 2001
From: Michael Peter Christen <mc@yacy.net>
Date: Sat, 4 Jul 2026 14:08:46 +0200
Subject: fix for memory setting

---
 htroot/env/markdown.css                         | 64 +++++++++++++++++++++++++
 source/net/yacy/htroot/PerformanceQueues_p.java | 31 +++++++++++-
 2 files changed, 93 insertions(+), 2 deletions(-)
 create mode 100644 htroot/env/markdown.css

diff --git a/htroot/env/markdown.css b/htroot/env/markdown.css
new file mode 100644
index 000000000..9478e90c6
--- /dev/null
+++ b/htroot/env/markdown.css
@@ -0,0 +1,64 @@
+/*
+ * Shared styles for rendered markdown content, scoped to the .markdown-body class.
+ * Used by yacychat.html (chat messages) and LogReports_p.html (log reports);
+ * rendered together with js/yacy-markdown.js.
+ * Page-specific container properties (padding, max-height, borders) stay local
+ * to the page stylesheets.
+ */
+
+.markdown-body {
+  white-space: normal;
+}
+
+.markdown-body,
+.markdown-body * {
+  font-family: 'Roboto Mono', 'Menlo', 'Consolas', monospace !important; /* Force markdown output and descendants to stay monospace, FTW! */
+}
+
+.markdown-body h1,
+.markdown-body h2,
+.markdown-body h3,
+.markdown-body h4,
+.markdown-body h5,
+.markdown-body h6,
+.markdown-body p,
+.markdown-body li,
+.markdown-body pre,
+.markdown-body code {
+  font-size: 1.2rem;
+  line-height: 1.6;
+}
+
+.markdown-body table {
+  border-collapse: collapse;
+  border: 1px solid #c3cbd9;
+  margin: 8px 0;
+}
+
+.markdown-body th,
+.markdown-body td {
+  border: 1px solid #c3cbd9;
+  padding: 4px 8px;
+}
+
+.markdown-body th {
+  background-color: rgba(27,31,35,0.05);
+}
+
+.markdown-body pre {
+  background-color: #2c3e50;
+  border: 1px solid #dfe2e5;
+  border-radius: 4px;
+  padding: 2px;
+  overflow-x: auto;
+  font-family: 'Roboto Mono', 'Menlo', 'Consolas', monospace;
+  white-space: pre;
+}
+
+.markdown-body code {
+  font-family: 'Roboto Mono', 'Menlo', 'Consolas', monospace;
+  font-size: 0.95rem;
+  background-color: rgba(27,31,35,0.05);
+  padding: 2px 4px;
+  border-radius: 4px;
+}
diff --git a/source/net/yacy/htroot/PerformanceQueues_p.java b/source/net/yacy/htroot/PerformanceQueues_p.java
index b6280fc81..5818d572a 100644
--- a/source/net/yacy/htroot/PerformanceQueues_p.java
+++ b/source/net/yacy/htroot/PerformanceQueues_p.java
@@ -397,8 +397,7 @@ public class PerformanceQueues_p {
 				SwitchboardConstants.REMOTESEARCH_MAXLOAD_SOLR_DEFAULT));
 
 		// parse initialization memory settings
-		final String Xmx = sb.getConfig("javastart_Xmx", "Xmx600m").substring(3);
-		prop.put("Xmx", Xmx.substring(0, Xmx.length() - 1));
+		prop.put("Xmx", xmxToMebibytes(sb.getConfig("javastart_Xmx", "Xmx600m")));
 
         final long diskFree = sb.getConfigLong(SwitchboardConstants.RESOURCE_DISK_FREE_MIN_STEADYSTATE, 3000L);
         final long diskFreeHardlimit = sb.getConfigLong(SwitchboardConstants.RESOURCE_DISK_FREE_MIN_UNDERSHOT, 1000L);
@@ -421,6 +420,34 @@ public class PerformanceQueues_p {
         return prop;
     }
 
+    /**
+     * Parse a JVM maximum heap size option like "Xmx600m", "Xmx16g" or "Xmx2048k"
+     * into mebibytes for display and editing on the Performance page. The value may
+     * have been edited manually in the config file, so all JVM unit suffixes
+     * (k/m/g/t, case-insensitive) and a plain byte count without suffix must be
+     * understood; simply cutting off the last character would misread "Xmx16g" as
+     * 16 MiB and a subsequent form submit would rewrite it as "Xmx16m".
+     * @return the heap size in mebibytes, or 600 if the value cannot be parsed
+     */
+    private static long xmxToMebibytes(String xmx) {
+        try {
+            if (xmx.startsWith("Xmx")) xmx = xmx.substring(3);
+            xmx = xmx.trim();
+            final char unit = Character.toLowerCase(xmx.charAt(xmx.length() - 1));
+            if (Character.isDigit(unit)) return Long.parseLong(xmx) / (1024L * 1024L); // no suffix means bytes
+            final long value = Long.parseLong(xmx.substring(0, xmx.length() - 1));
+            switch (unit) {
+                case 'k': return value / 1024L;
+                case 'm': return value;
+                case 'g': return value * 1024L;
+                case 't': return value * 1024L * 1024L;
+                default: return 600L;
+            }
+        } catch (final RuntimeException e) {
+            return 600L;
+        }
+    }
+
     private static String d(final String a, final String b) {
         return (a == null) ? b : a;
     }
-- 
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