I do not experience the same issue on Mac OS X 10.10.
PS. Sorry for bumping this up. Is this question out of scope of mailing
list?
On Fri, Dec 26, 2014 at 2:27 PM, Dmitry Volosnykh <
dmitry.volosn...@gmail.com> wrote:
> Here is example application:
>
> import QtQuick 2.0
>
> PathView {
> width: 1280
> height: 720
> cacheItemCount: 7
> pathItemCount: 7
> preferredHighlightBegin: 0.5
> preferredHighlightEnd: 0.5
> model: ListModel {
> ListElement {
> color: "orange"
> text: "first"
> }
> ListElement {
> color: "lightgreen"
> text: "second"
> }
> ListElement {
> color: "orchid"
> text: "third"
> }
> ListElement {
> color: "tomato"
> text: "fourth"
> }
> ListElement {
> color: "skyblue"
> text: "fifth"
> }
> ListElement {
> color: "hotpink"
> text: "sixth"
> }
> ListElement {
> color: "darkseagreen"
> text: "seventh"
> }
> ListElement {
> color: "salmon"
> text: "eightth"
> }
> ListElement {
> color: "darkolivegreen"
> text: "nineth"
> }
> ListElement {
> color: "navy"
> text: "tenth"
> }
> }
> delegate: Item {
> width: 150
> height: 150
>
> Rectangle {
> id: rect
> anchors.fill: parent
> color: model.color
> opacity: 0.8
> }
>
> Text {
> anchors.centerIn: parent
> text: model.text
> color: "white"
> font.pixelSize: 24
> }
> }
> path: Path {
> startX: -150
> startY: height / 2
> PathLine {
> x: width + 150
> relativeY: 0
> }
> }
>
> NumberAnimation on offset {
> from: 0
> to: count
> loops: Animation.Infinite
> duration: 4000
> Component.onCompleted: start()
> }
> }
>
> On Fri, Dec 26, 2014 at 2:19 PM, Dmitry Volosnykh <
> dmitry.volosn...@gmail.com> wrote:
>
>> Hi,
>>
>> I've composed a simple example with a set of squares constantly looping
>> from left to right. Unfortunately, the do not run smoothly. Jiggling at
>> start might seem reasonable due to QML engine performing some kind of
>> initialization (do not know its internals). However, after a while when
>> initialization seems to be done, motion still gets freezed from time to
>> time. As a first guess, I could think that it is the garbage collector
>> affecting performance, but since UI structure does not change such
>> suggestion might be irrelevant.
>>
>> I see similar behavior when using qmlscene for Qt versions 5.1.1 and
>> 5.3.2 (Ubuntu 14.04), and 5.2.1 (embedded Linux).
>>
>> Can this be related to "QML instantiation performance" discussion
>> happened in the beginning of December? Maybe this is related
>> to QTBUG-43096. But in this case it should not be reproducible on version
>> 5.1.1.
>>
>> Regards,
>> Dmitry.
>>
>
>
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