Question

经过大量研究和试验后出现错误。我终于找出了我的内存泄漏来自哪里。您需要使用XmlSerializer作为静态对象。

    private string Serialize(Bob request)
    {
        XmlSerializer xSer = CreateOverrider(request.Token.Value.Trim().Length < 1 ? true : false);

        XmlSerializerNamespaces xmlnsEmpty = new XmlSerializerNamespaces();
        xmlnsEmpty.Add(string.Empty, "http://www.schema.com/schema");

        StringBuilder sb = new StringBuilder();
        using (XmlWriter writer = XmlWriter.Create(sb, new XmlWriterSettings() { OmitXmlDeclaration = true }))
        {
            xSer.Serialize(writer, request, xmlnsEmpty);
        }

        return sb.ToString();
    }

    // https://msdn.microsoft.com/en-us/library/system.xml.serialization.xmlattributes.xmlignore(v=vs.110).aspx
    private XmlSerializer CreateOverrider(bool override)
    {
        // Create the XmlAttributeOverrides and XmlAttributes objects.
        XmlAttributeOverrides xOver = new XmlAttributeOverrides();
        XmlAttributes attrs = new XmlAttributes();

        attrs = new XmlAttributes();
        attrs.XmlIgnore = override;
        attrs.XmlElements.Add(new XmlElementAttribute("validation"));
        xOver.Add(typeof(RegisterBobRequest), "validation", attrs);

        XmlSerializer xSer = new XmlSerializer(typeof(BobRequest), xOver);
        return xSer;
    }

上面的代码导致内存泄漏缓慢，并且在Windows上不是问题。一旦在.net core 2.0上发布到Ubuntu 16.04，内存每分钟左右就会增加1meg。最终的结果是制作了＆＃34; XmlSerializer＆＃34;静态和只读。

    private static readonly XmlSerializer xmlSerializer = CreateOverrider(false);
    private static readonly XmlSerializer xmlSerializerTrue = CreateOverrider(true);

    private string Serialize(Bob request)
    {
        XmlSerializerNamespaces xmlnsEmpty = new XmlSerializerNamespaces();
        xmlnsEmpty.Add(string.Empty, "http://www.schema.com/schema");

        StringBuilder sb = new StringBuilder();
        using (XmlWriter writer = XmlWriter.Create(sb, new XmlWriterSettings() { OmitXmlDeclaration = true }))
        {
            if (request.Token.Value.Trim().Length < 1)
            {
                xmlSerializerTrue.Serialize(writer, request, xmlnsEmpty);
            }
            else
            {
                xmlSerializer.Serialize(writer, request, xmlnsEmpty);
            }
        }

        return sb.ToString();
    }

在内存泄漏的一天结束时，服务器将运行到8gig限制并需要回收服务。在此更新之后，该过程一直在运行~330meg而没有问题。

我们现在每天通过此服务推出约100k请求，但没有问题。我希望这有助于其他人。

使用.net core 2.0 linux上的XmlSerializer进行内存泄漏

0 个答案: