diff --git a/custom/conf/app.example.ini b/custom/conf/app.example.ini
index bee12ffa9b22..03f004ee9019 100644
--- a/custom/conf/app.example.ini
+++ b/custom/conf/app.example.ini
@@ -403,6 +403,9 @@ LOG_SQL = false ; if unset defaults to true
 ;;
 ;; Database maximum number of open connections, default is 0 meaning no maximum
 ;MAX_OPEN_CONNS = 0
+;;
+;; Whether execute database models migrations automatically
+;AUTO_MIGRATION = true
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
diff --git a/docs/content/doc/advanced/config-cheat-sheet.en-us.md b/docs/content/doc/advanced/config-cheat-sheet.en-us.md
index 756ab3225675..37f03b42ea72 100644
--- a/docs/content/doc/advanced/config-cheat-sheet.en-us.md
+++ b/docs/content/doc/advanced/config-cheat-sheet.en-us.md
@@ -444,6 +444,7 @@ The following configuration set `Content-Type: application/vnd.android.package-a
 - `MAX_OPEN_CONNS` **0**: Database maximum open connections - default is 0, meaning there is no limit.
 - `MAX_IDLE_CONNS` **2**: Max idle database connections on connection pool, default is 2 - this will be capped to `MAX_OPEN_CONNS`.
 - `CONN_MAX_LIFETIME` **0 or 3s**: Sets the maximum amount of time a DB connection may be reused - default is 0, meaning there is no limit (except on MySQL where it is 3s - see #6804 & #7071).
+- `AUTO_MIGRATION` **true**: Whether execute database models migrations automatically.
 
 Please see #8540 & #8273 for further discussion of the appropriate values for `MAX_OPEN_CONNS`, `MAX_IDLE_CONNS` & `CONN_MAX_LIFETIME` and their
 relation to port exhaustion.
diff --git a/models/repo/language_stats.go b/models/repo/language_stats.go
index f8f5dd041fa1..2da16814bd8f 100644
--- a/models/repo/language_stats.go
+++ b/models/repo/language_stats.go
@@ -6,6 +6,7 @@ package repo
 import (
 	"context"
 	"math"
+	"sort"
 	"strings"
 
 	"code.gitea.io/gitea/models/db"
@@ -43,7 +44,7 @@ func (stats LanguageStatList) LoadAttributes() {
 
 func (stats LanguageStatList) getLanguagePercentages() map[string]float32 {
 	langPerc := make(map[string]float32)
-	var otherPerc float32 = 100
+	var otherPerc float32
 	var total int64
 
 	for _, stat := range stats {
@@ -51,21 +52,52 @@ func (stats LanguageStatList) getLanguagePercentages() map[string]float32 {
 	}
 	if total > 0 {
 		for _, stat := range stats {
-			perc := float32(math.Round(float64(stat.Size)/float64(total)*1000) / 10)
+			perc := float32(float64(stat.Size) / float64(total) * 100)
 			if perc <= 0.1 {
+				otherPerc += perc
 				continue
 			}
-			otherPerc -= perc
 			langPerc[stat.Language] = perc
 		}
-		otherPerc = float32(math.Round(float64(otherPerc)*10) / 10)
 	}
 	if otherPerc > 0 {
 		langPerc["other"] = otherPerc
 	}
+	roundByLargestRemainder(langPerc, 100)
 	return langPerc
 }
 
+// Rounds to 1 decimal point, target should be the expected sum of percs
+func roundByLargestRemainder(percs map[string]float32, target float32) {
+	leftToDistribute := int(target * 10)
+
+	keys := make([]string, 0, len(percs))
+
+	for k, v := range percs {
+		percs[k] = v * 10
+		floored := math.Floor(float64(percs[k]))
+		leftToDistribute -= int(floored)
+		keys = append(keys, k)
+	}
+
+	// Sort the keys by the largest remainder
+	sort.SliceStable(keys, func(i, j int) bool {
+		_, remainderI := math.Modf(float64(percs[keys[i]]))
+		_, remainderJ := math.Modf(float64(percs[keys[j]]))
+		return remainderI > remainderJ
+	})
+
+	// Increment the values in order of largest remainder
+	for _, k := range keys {
+		percs[k] = float32(math.Floor(float64(percs[k])))
+		if leftToDistribute > 0 {
+			percs[k]++
+			leftToDistribute--
+		}
+		percs[k] /= 10
+	}
+}
+
 // GetLanguageStats returns the language statistics for a repository
 func GetLanguageStats(ctx context.Context, repo *Repository) (LanguageStatList, error) {
 	stats := make(LanguageStatList, 0, 6)
diff --git a/modules/doctor/dbversion.go b/modules/doctor/dbversion.go
index 3ddca92fb34c..2b20cb234064 100644
--- a/modules/doctor/dbversion.go
+++ b/modules/doctor/dbversion.go
@@ -12,6 +12,7 @@ import (
 )
 
 func checkDBVersion(ctx context.Context, logger log.Logger, autofix bool) error {
+	logger.Info("Expected database version: %d", migrations.ExpectedVersion())
 	if err := db.InitEngineWithMigration(ctx, migrations.EnsureUpToDate); err != nil {
 		if !autofix {
 			logger.Critical("Error: %v during ensure up to date", err)
diff --git a/modules/setting/database.go b/modules/setting/database.go
index be06c47478fd..5480f9dffd90 100644
--- a/modules/setting/database.go
+++ b/modules/setting/database.go
@@ -49,6 +49,7 @@ var (
 		MaxOpenConns      int
 		ConnMaxLifetime   time.Duration
 		IterateBufferSize int
+		AutoMigration     bool
 	}{
 		Timeout:           500,
 		IterateBufferSize: 50,
@@ -105,6 +106,7 @@ func InitDBConfig() {
 	Database.LogSQL = sec.Key("LOG_SQL").MustBool(true)
 	Database.DBConnectRetries = sec.Key("DB_RETRIES").MustInt(10)
 	Database.DBConnectBackoff = sec.Key("DB_RETRY_BACKOFF").MustDuration(3 * time.Second)
+	Database.AutoMigration = sec.Key("AUTO_MIGRATION").MustBool(true)
 }
 
 // DBConnStr returns database connection string
diff --git a/routers/common/db.go b/routers/common/db.go
index ac082ab36f99..2e86fbd0fd42 100644
--- a/routers/common/db.go
+++ b/routers/common/db.go
@@ -12,6 +12,8 @@ import (
 	"code.gitea.io/gitea/models/migrations"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
+
+	"xorm.io/xorm"
 )
 
 // InitDBEngine In case of problems connecting to DB, retry connection. Eg, PGSQL in Docker Container on Synology
@@ -24,7 +26,7 @@ func InitDBEngine(ctx context.Context) (err error) {
 		default:
 		}
 		log.Info("ORM engine initialization attempt #%d/%d...", i+1, setting.Database.DBConnectRetries)
-		if err = db.InitEngineWithMigration(ctx, migrations.Migrate); err == nil {
+		if err = db.InitEngineWithMigration(ctx, migrateWithSetting); err == nil {
 			break
 		} else if i == setting.Database.DBConnectRetries-1 {
 			return err
@@ -36,3 +38,20 @@ func InitDBEngine(ctx context.Context) (err error) {
 	db.HasEngine = true
 	return nil
 }
+
+func migrateWithSetting(x *xorm.Engine) error {
+	if setting.Database.AutoMigration {
+		return migrations.Migrate(x)
+	}
+
+	if current, err := migrations.GetCurrentDBVersion(x); err != nil {
+		return err
+	} else if current < 0 {
+		// execute migrations when the database isn't initialized even if AutoMigration is false
+		return migrations.Migrate(x)
+	} else if expected := migrations.ExpectedVersion(); current != expected {
+		log.Fatal(`"database.AUTO_MIGRATION" is disabled, but current database version %d is not equal to the expected version %d.`+
+			`You can set "database.AUTO_MIGRATION" to true or migrate manually by running "gitea [--config /path/to/app.ini] migrate"`, current, expected)
+	}
+	return nil
+}