diff --git a/conf/app.ini b/conf/app.ini
index dba75ed1b5..0fec297bc5 100644
--- a/conf/app.ini
+++ b/conf/app.ini
@@ -257,6 +257,12 @@ CONN =
 
 [git]
 MAX_GITDIFF_LINES = 10000
+; Arguments for command 'git fsck', e.g.: "--unreachable --tags"
+; see more on http://git-scm.com/docs/git-fsck/1.7.5
+FSCK_ARGS = 
+; Arguments for command 'git gc', e.g.: "--aggressive --auto"
+; see more on http://git-scm.com/docs/git-gc/1.7.5
+GC_ARGS = 
 
 [i18n]
 LANGS = en-US,zh-CN,zh-HK,de-DE,fr-CA,nl-NL
diff --git a/conf/locale/locale_en-US.ini b/conf/locale/locale_en-US.ini
index d798f23ecc..2b60811206 100644
--- a/conf/locale/locale_en-US.ini
+++ b/conf/locale/locale_en-US.ini
@@ -476,6 +476,8 @@ dashboard.delete_inactivate_accounts = Delete all inactive accounts
 dashboard.delete_inactivate_accounts_success = All inactivate accounts have been deleted successfully.
 dashboard.delete_repo_archives = Delete all repositories archives
 dashboard.delete_repo_archives_success = All repositories archives have been deleted successfully.
+dashboard.git_gc_repos = Do garbage collection on repositories
+dashboard.git_gc_repos_success = All repositories have done garbage collection successfully.
 dashboard.server_uptime = Server Uptime
 dashboard.current_goroutine = Current Goroutines
 dashboard.current_memory_usage = Current Memory Usage
diff --git a/gogs.go b/gogs.go
index c555b56ccc..ec8fa48695 100644
--- a/gogs.go
+++ b/gogs.go
@@ -17,7 +17,7 @@ import (
 	"github.com/gogits/gogs/modules/setting"
 )
 
-const APP_VER = "0.5.8.1128 Beta"
+const APP_VER = "0.5.8.1130 Beta"
 
 func init() {
 	runtime.GOMAXPROCS(runtime.NumCPU())
diff --git a/models/repo.go b/models/repo.go
index e4f470680f..5676a443ff 100644
--- a/models/repo.go
+++ b/models/repo.go
@@ -1140,18 +1140,8 @@ type SearchOption struct {
 	Private bool
 }
 
-// FilterSQLInject tries to prevent SQL injection.
-func FilterSQLInject(key string) string {
-	key = strings.TrimSpace(key)
-	key = strings.Split(key, " ")[0]
-	key = strings.Replace(key, ",", "", -1)
-	return key
-}
-
 // SearchRepositoryByName returns given number of repositories whose name contains keyword.
 func SearchRepositoryByName(opt SearchOption) (repos []*Repository, err error) {
-	// Prevent SQL inject.
-	opt.Keyword = FilterSQLInject(opt.Keyword)
 	if len(opt.Keyword) == 0 {
 		return repos, nil
 	}
@@ -1183,6 +1173,47 @@ func DeleteRepositoryArchives() error {
 		})
 }
 
+// GitFsck calls 'git fsck' to check repository health.
+func GitFsck() {
+	args := append([]string{"fsck"}, setting.GitFsckArgs...)
+	if err := x.Where("id > 0").Iterate(new(Repository),
+		func(idx int, bean interface{}) error {
+			repo := bean.(*Repository)
+			if err := repo.GetOwner(); err != nil {
+				return err
+			}
+
+			repoPath := RepoPath(repo.Owner.Name, repo.Name)
+			_, _, err := process.ExecDir(-1, repoPath, "Repository health check", "git", args...)
+			if err != nil {
+				desc := fmt.Sprintf("Fail to health check repository(%s)", repoPath)
+				log.Warn(desc)
+				if err = CreateRepositoryNotice(desc); err != nil {
+					log.Error(4, "Fail to add notice: %v", err)
+				}
+			}
+			return nil
+		}); err != nil {
+		log.Error(4, "repo.Fsck: %v", err)
+	}
+}
+
+func GitGcRepos() error {
+	args := append([]string{"gc"}, setting.GitGcArgs...)
+	return x.Where("id > 0").Iterate(new(Repository),
+		func(idx int, bean interface{}) error {
+			repo := bean.(*Repository)
+			if err := repo.GetOwner(); err != nil {
+				return err
+			}
+			_, stderr, err := process.ExecDir(-1, RepoPath(repo.Owner.Name, repo.Name), "Repository garbage collection", "git", args...)
+			if err != nil {
+				return fmt.Errorf("%v: %v", err, stderr)
+			}
+			return nil
+		})
+}
+
 //  __      __         __         .__
 // /  \    /  \_____ _/  |_  ____ |  |__
 // \   \/\/   /\__  \\   __\/ ___\|  |  \
diff --git a/models/user.go b/models/user.go
index 9eead462e2..61a43ba9bf 100644
--- a/models/user.go
+++ b/models/user.go
@@ -628,7 +628,6 @@ func GetUserByEmail(email string) (*User, error) {
 
 // SearchUserByName returns given number of users whose name contains keyword.
 func SearchUserByName(opt SearchOption) (us []*User, err error) {
-	opt.Keyword = FilterSQLInject(opt.Keyword)
 	if len(opt.Keyword) == 0 {
 		return us, nil
 	}
diff --git a/modules/cron/manager.go b/modules/cron/manager.go
index 563426fb79..fcf559bcb0 100644
--- a/modules/cron/manager.go
+++ b/modules/cron/manager.go
@@ -14,8 +14,10 @@ import (
 var c = New()
 
 func NewCronContext() {
+	models.GitFsck()
 	c.AddFunc("Update mirrors", "@every 1h", models.MirrorUpdate)
 	c.AddFunc("Deliver hooks", fmt.Sprintf("@every %dm", setting.WebhookTaskInterval), models.DeliverHooks)
+	c.AddFunc("Repository health check", "@every 1h", models.GitFsck)
 	c.Start()
 }
 
diff --git a/modules/setting/setting.go b/modules/setting/setting.go
index 9737fa7c1d..476fc6affa 100644
--- a/modules/setting/setting.go
+++ b/modules/setting/setting.go
@@ -109,6 +109,8 @@ var (
 
 	// Git settings.
 	MaxGitDiffLines int
+	GitFsckArgs     []string
+	GitGcArgs       []string
 
 	// I18n settings.
 	Langs, Names []string
@@ -288,6 +290,8 @@ func NewConfigContext() {
 	DisableGravatar = Cfg.MustBool("picture", "DISABLE_GRAVATAR")
 
 	MaxGitDiffLines = Cfg.MustInt("git", "MAX_GITDIFF_LINES", 10000)
+	GitFsckArgs = Cfg.MustValueArray("git", "FSCK_ARGS", " ")
+	GitGcArgs = Cfg.MustValueArray("git", "GC_ARGS", " ")
 
 	Langs = Cfg.MustValueArray("i18n", "LANGS", ",")
 	Names = Cfg.MustValueArray("i18n", "NAMES", ",")
diff --git a/routers/admin/admin.go b/routers/admin/admin.go
index db36696c77..99bae8819a 100644
--- a/routers/admin/admin.go
+++ b/routers/admin/admin.go
@@ -117,6 +117,7 @@ const (
 	CLEAN_UNBIND_OAUTH AdminOperation = iota + 1
 	CLEAN_INACTIVATE_USER
 	CLEAN_REPO_ARCHIVES
+	GIT_GC_REPOS
 )
 
 func Dashboard(ctx *middleware.Context) {
@@ -140,6 +141,9 @@ func Dashboard(ctx *middleware.Context) {
 		case CLEAN_REPO_ARCHIVES:
 			success = ctx.Tr("admin.dashboard.delete_repo_archives_success")
 			err = models.DeleteRepositoryArchives()
+		case GIT_GC_REPOS:
+			success = ctx.Tr("admin.dashboard.git_gc_repos_success")
+			err = models.GitGcRepos()
 		}
 
 		if err != nil {
diff --git a/templates/.VERSION b/templates/.VERSION
index c4127c31a3..27cf20dd2f 100644
--- a/templates/.VERSION
+++ b/templates/.VERSION
@@ -1 +1 @@
-0.5.8.1128 Beta
\ No newline at end of file
+0.5.8.1130 Beta
\ No newline at end of file
diff --git a/templates/admin/dashboard.tmpl b/templates/admin/dashboard.tmpl
index 7038910596..8d17c360b0 100644
--- a/templates/admin/dashboard.tmpl
+++ b/templates/admin/dashboard.tmpl
@@ -44,6 +44,10 @@
                                                 <td>{{.i18n.Tr "admin.dashboard.delete_repo_archives"}}</td>
                                                 <td><i class="fa fa-caret-square-o-right"></i> <a href="{{AppSubUrl}}/admin?op=3">{{.i18n.Tr "admin.dashboard.operation_run"}}</a></td>
                                             </tr>
+                                            <tr>
+                                                <td>{{.i18n.Tr "admin.dashboard.git_gc_repos"}}</td>
+                                                <td><i class="fa fa-caret-square-o-right"></i> <a href="{{AppSubUrl}}/admin?op=4">{{.i18n.Tr "admin.dashboard.operation_run"}}</a></td>
+                                            </tr>
                                         </tbody>
                                     </table>
                                 </div>