User-controlled refresh timing—optionally, you can control when refreshes occur. This allows you Asserted to indicate that calibration has failed. afi_cal_req. also support burst refresh which can be used to meet the deadlines of real-time . the only requirement of the memory controller is to issue refresh commands at .. ciating failure rate from single effects of the leakiest cells. Another promising. One of the most common issues that we see in Microsoft Customer Support The 2GB allocated for Kernel-mode memory is shared among all processes, but o On IIS 7, you can use Failed Request Tracing (FREB) to . because you then have no control over how much data is displayed in your page.
For information on resolving each of these causes, see the Resolution section of this article. String Concatenation Strings in a managed application an application written using the.
NET Framework are immutable. When a new value is assigned to a string, a copy is made of the existing string and the new value is assigned to the new string. See this Knowledge Base article for more information.
Fragmentation in the Managed Heap The garbage collector GC in a managed application compacts the heaps to reduce the amount of fragmentation. See this blog post for more information.
Fragmentation in the Virtual Address VA Space As discussed previously, each process has a certain amount of memory allocated to it, and that memory represents the VA space for the process. If the VA space becomes fragmented, it increases the likelihood that the GC will not be able to obtain a large block of contiguous memory to grow the managed heaps, and that can lead to an OOM condition.
Fragmentation in the VA space is often caused by one or more of the following scenarios.
Loading the same assemblies into multiple application domains. For example, caching the result of a query that returns an entire database table in order to avoid the cost of retrieving parts of data from the database when needed is not a good approach.
Doing so can easily cause high memory and lead to an OOM condition. Allowing a user to initiate a similar query e. NET tracing is a powerful feature for troubleshooting applications, but it should never be left on in a production environment.
External Memory Interfaces Intel Cyclone 10 GX FPGA IP User Guide
NET tracing uses data structures such as DataTables to store trace information, and over time, these can cause a high memory condition that can lead to OOM. Leaking Native Resources Many managed resources will also make use of native resources.
For more information, see this article in the Microsoft Knowledge Base. Incremental improvements have been made in each version. However, there are still design patterns you can implement that will be beneficial if you have a need to pin objects.
For more information, see this blog post. Fragmentation in the Virtual Address VA Space As previously mentioned, fragmentation in the VA space is most often caused by a large number of assemblies loaded into the process.
- How to Troubleshoot Out of Memory Issues (System.OutOfMemoryException) in ASP.NET
- External Memory Interfaces Intel Cyclone 10 GX FPGA IP User Guide
There are three common causes of this that we see. Assemblies loaded into multiple application domains. If you need to use an assembly in more than one application running in the same application pool, strong-name the assembly and install it into the GAC.
Code and ideas for testing RAM
By doing that, you ensure that the assembly is only loaded into the process one time. Running an application in debug mode. See this page for more information. See this blog post for information on how to resolve that.
Testing RAM in Embedded Systems, by Jack Ganssle
You can share the sequencer among multiple memory interfaces of the same or different protocols. The PHY circuitry is hardened in the silicon, which simplifies the challenges of achieving timing closure and minimal power consumption.Nonblocking Memory Refresh [ISCA '18]
Hard Memory Controller The hard memory controller reduces latency and minimizes core logic consumption in the external memory interface. When selected, the PHY-only option generates only the PHY and sequencer, but not the controller, thus providing a mechanism by which you can integrate your own custom soft controller. The PHY clock trees exhibit low jitter and low duty cycle distortion, maximizing the data valid window.
Automatic Clock Phase Alignment Automatic clock phase alignment circuitry dynamically adjusts the clock phase of core clock networks to match the clock phase of the PHY clock networks. The clock phase alignment circuitry minimizes clock skew that can complicate timing closure in transfers between the FPGA core and the periphery.
Resource Sharing The device architecture simplifies resource sharing between memory interfaces. A hardened Nios processor with dedicated memory. The hardened Nios II processor and the dedicated memory can be used only by an external memory interface, and cannot be employed for any other use.
You can make a wider interface by connecting multiple banks together. A wider interface, such as x72 or x, can be implemented by configuring multiple adjacent banks in a multi-bank interface. In a multi-bank interface, only the controller of one bank is active; controllers in the remaining banks are turned off to conserve power.
To use a multi-bank EMIF interface, you must observe the following rules: