android - Bad Listview Performance on Nexus 4, good on Nexus 7 -

i developing android application @ moment. application has deal large lists alot (thousands of entries, it's playlist).

to add possibility reorder entries, use drag-sort-listview library. additionally, each row has progressbar in it. bar visible on current item (so 1 whole list). however, running huge performance problems on nexus 4 (cm 10.1.2 final), while performance @ nexus 7 (2012, stock). tracked cpu usage while scrolling list fast can (without using fastscroll mechanism. on nexus 7, cpu usage stayed below 30%, on nexus 4 hit 80% , list extremely laggy. logcat output had line

i/choreographer(639): skipped xx frames! application may doing work on main thread. 

a few times , ui felt render 1fps.

the problem can't imagine reason this. using viewholder pattern in adapter. because of custom fonts, using font cache.

the getview() method of adapter:

@override public view getview(int position, view convertview, viewgroup arg2) {     playlistitem playlistitem = items.get(position);     viewholder holder;      if (convertview == null) {         convertview = inflater.inflate(r.layout.list_item_playlist, null);         holder = new viewholder();         holder.tv_artist = (textview) convertview.findviewbyid(r.id.tv_artist);         holder.tv_number = (textview) convertview.findviewbyid(r.id.tv_number);         holder.tv_number_in_queue = (textview) convertview.findviewbyid(r.id.tv_number_in_queue);         holder.tv_title = (textview) convertview.findviewbyid(r.id.tv_title);         holder.tv_track_length = (textview) convertview.findviewbyid(r.id.tv_track_length);         holder.progressbar = (progressbar) convertview.findviewbyid(r.id.progressbar1);         holder.drag_point = (imageview) convertview.findviewbyid(r.id.drag_point);         convertview.settag(holder);     } else {         holder = (viewholder) convertview.gettag();     }      //show artist , title     holder.tv_artist.settext(playlistitem.getartist());     holder.tv_title.settext(playlistitem.gettitle());      if (queueditems.get(position) != null)         holder.tv_number_in_queue.settext("[" + (queueditems.get(position) + 1) + "]");     else         holder.tv_number_in_queue.settext("");      //show track length     if (playlistitem.getlength() > -1)         holder.tv_track_length.settext(playlistitem.getlengthinhours());     else         holder.tv_track_length.settext("");      //show index in playlist     holder.tv_number.settext(playlistitem.getdisplaynumber());      // show progressbar , set progress if item playing 1     if (playlistitem.getindex() == currentitem) {         holder.progressbar.setvisibility(view.visible);         if (currenttracklength > 0) {             if (holder.progressbar.getmax() != currenttracklength) {                 holder.progressbar.setmax(currenttracklength);             }             holder.progressbar.setprogress(currenttrackpos);         } else {             holder.progressbar.setmax(1);             holder.progressbar.setprogress(1);         }     } else {         holder.progressbar.setvisibility(view.invisible);     }      return convertview; }  static class viewholder {     textview tv_number;     textview tv_title;     textview tv_artist;     textview tv_track_length;     textview tv_number_in_queue;     progressbar progressbar;     imageview drag_point; } 

the layout of single list item:

<relativelayout     android:id="@+id/rl_top_container"     android:layout_width="match_parent"     android:layout_height="@dimen/playlist_fragment_item_height"     android:background="?attr/background_playlist_item" >      <imageview         android:id="@+id/drag_point"         android:layout_width="40dp"         android:layout_height="match_parent"         android:layout_alignparentleft="true"         android:paddingleft="10dp"         android:paddingright="10dp"         android:scaletype="centerinside"         android:src="?attr/drag_sort_icon" />      <textview         android:id="@+id/tv_number"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_centervertical="true"         android:layout_torightof="@+id/drag_point"         android:text="1"         android:textappearance="?android:attr/textappearance"         android:textcolor="?attr/foreground_text_color_secondary"         android:textsize="@dimen/playlist_fragment_title_size" />      <relativelayout         android:id="@+id/rl_container"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_centervertical="true"         android:layout_marginleft="8dp"         android:layout_marginright="8dp"         android:layout_torightof="@+id/tv_number" >          <textview             android:id="@+id/tv_title"             android:layout_width="match_parent"             android:layout_height="wrap_content"             android:layout_toleftof="@+id/tv_track_length"             android:singleline="true"             android:text="title"             android:textcolor="?attr/foreground_text_color"             android:textsize="@dimen/playlist_fragment_title_size" />          <textview             android:id="@+id/tv_artist"             android:layout_width="match_parent"             android:layout_height="wrap_content"             android:layout_below="@+id/tv_title"             android:layout_toleftof="@+id/tv_number_in_queue"             android:singleline="true"             android:text="artist"             android:textcolor="?attr/foreground_text_color_secondary"             android:textsize="@dimen/playlist_fragment_artist_size" />          <textview             android:id="@+id/tv_number_in_queue"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_alignbottom="@+id/tv_artist"             android:layout_alignparentend="true"             android:padding="3dp"             android:textcolor="?attr/foreground_text_color_secondary"             android:textsize="@dimen/playlist_fragment_additional_info_size" />          <textview             android:id="@+id/tv_track_length"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_alignparentend="true"             android:layout_alignparenttop="false"             android:layout_aligntop="@+id/tv_title"             android:padding="3dp"             android:textcolor="?attr/foreground_text_color_secondary"             android:textsize="@dimen/playlist_fragment_additional_info_size" />     </relativelayout>      <progressbar         android:id="@+id/progressbar1"         style="?android:attr/progressbarstylehorizontal"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_alignparentbottom="true"         android:layout_marginbottom="@dimen/playlist_fragment_item_margin_progress_bar"         android:visibility="invisible" /> </relativelayout> 

the listview:

<com.mobeta.android.dslv.dragsortlistview     android:id="@+id/list_playlist"     dslv:drag_handle_id="@+id/drag_point"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:fastscrollenabled="true"     android:dividerheight="0dp"     android:divider="@null"     dslv:drag_enabled="true"     dslv:collapsed_height="2dp"     dslv:drag_scroll_start="0.33"     dslv:max_drag_scroll_speed="1.0"     dslv:float_alpha="0.6"     dslv:slide_shuffle_speed="0.3"     dslv:use_default_controller="true">  </com.mobeta.android.dslv.dragsortlistview> 

i absolutely ran out of ideas. logcat did show 2 or 3 gc calls while scrolling way, think won't reason.

any idea welcome! thank you.

edit: ok it's getting weird. ran code on htc desire z (aka g2... 800mhz, 512mb ram) android 2.3.5 , sense... here it's smoother on nexus 4?! gong on? cyanogenmod cause misbehaviour? asking, because don't want flash rom because of suspicion.