57 results about "Memory problems" patented technology

Techniques are described for optimizing memory management in a processor system. The techniques may be implemented on processors that include on-chip performance monitoring and on systems where an external performance monitor is coupled to a processor. Processors that include a Performance Monitoring Unit (PMU) are examples. The PMU may store data on read and write cache misses, as well as data on translation lookaside buffer (TLB) misses. The data from the PMU is used to determine if any memory regions within a memory heap are delinquent memory regions, i.e., regions exhibiting high numbers of memory problems or stalls. If delinquent memory regions are found, the memory manager, such as a garbage collection routine, can efficiently optimize memory performance as well as the mutators performance by improving the layout of objects in the heap. In this way, memory management routines may be focused based on dynamic and real-time memory performance data.

A method and system for providing a binary instrumentation tool to detect memory problems in a runtime application executing on a computer system includes identifying one or more functions or statements in the runtime application. A plurality of compiler annotations defining essential functional characteristic data of each of the plurality of functions is generated by a compiler when compiling the user program from source code to an executable binary code. A program error detector is configured to provide a checker code based on guidelines provided by of the plurality of compiler annotations associated with the function. The program error detector generates a modified function code for the identified function by inserting the checker code into a function code for the corresponding function. A modified executable binary code for the runtime application is then generated by replacing the function code for the function with the corresponding modified function code. When the modified executable binary code is run, the checker code associated with the function invokes a checker. The invoked checker provides performance data analysis that allows identification of program errors including memory errors in the runtime application.

The invention relates to the technical field of distributed databases, and particularly relates to a webpage URL repetition elimination method based on the distributed database. The method comprises the following steps: a step S101: acquiring to-be-crawled URLs, wherein to-be-crawled webpage URLs of a webpage are acquired by distributed crawlers; a step S102: calculating hash values of the URLs; a step S103: inquiring the database, wherein the distributed crawlers compress and uniformly send the URLs in an own collection library to the distributed database for executing repetition elimination; a step S104: feeding back a result, wherein a data query result is returned back; and a step S105: data acquisition, wherein crawler nodes determine whether the webpage can be crawled or not according to the returned result. With the method mentioned above, the webpage URL repetition elimination method based on the distributed database, provided by the invention, solves a memory problem and a single point problem in a massive URL repetition elimination process better, and simultaneously guarantees high query efficiency and low collision rate.

Techniques are described for optimizing memory management in a processor system. The techniques may be implemented on processors that include on-chip performance monitoring and on systems where an external performance monitor is coupled to a processor. Processors that include a Performance Monitoring Unit (PMU) are examples. The PMU may store data on read and write cache misses, as well as data on translation lookaside buffer (TLB) misses. The data from the PMU is used to determine if any memory regions within a memory heap are delinquent memory regions, i.e., regions exhibiting high numbers of memory problems or stalls. If delinquent memory regions are found, the memory manager, such as a garbage collection routine, can efficiently optimize memory performance as well as the mutators performance by improving the layout of objects in the heap. In this way, memory management routines may be focused based on dynamic and real-time memory performance data.

Methods for measuring atrophy in a brain region occupied by the hippocampus and entorhinal cortex. In one example, MRI scans and a computational formula are used to measure the medial-temporal lobe region of the brain over a time interval. This region contains the hippocampus and the entorhinal cortex, structures allied with learning and memory. Each year this region of the brain shrank in people who developed memory problems up to six years after their first MRI scan. The method is also applicable for measuring the progression rate of atrophy in the region in an instance where the onset of Alzheimer's disease has already been established.

A data structure within a block of allocable memory of a memory structure such as a heap is used to identify the function that is responsible for causing memory problems such as random overwrites, buffer overruns, double or multiple “frees,” and the like. The data structure can use the return address of the function that allocates or frees the allocable memory block to identify the caller. An identifier for the function is generated and stored in the allocable memory block.

The invention discloses a method using fixed-length fields to optimize iterative inquiry, including: set up a fixed-length major key field in database; choose the values of all the condition-matched recorded major key fields and save in a disk file according to specific requirements; set up iterative device and batch inquire the database through iterative device, construct the SQL sentence through read the values of major key fields in disk file during inquiry; after the completion of iterative inquiry, delete the iterative device and the value saved in disk file. The invention optimizes the present widely used iterative inquiry method, solve problems that when large amount of data inquiries can not obtain high inquiry speed and occupies large amounts of EMS memory problem and so on.

The invention discloses a JVM (Java Virtual Machine) memory leakage automatic-detection method and system. The method include: S1, setting a collection use-amount threshold value of memory on the basis of acquired memory pool management objects, and registering a listener on the basis of an acquired memory system management object; S2, informing the listener of current memory information by the memory system management object if the memory exceeds the collection use-amount threshold value after a JVM completes garbage collection (GC); and S3, analyzing the current memory information by the listener on the basis of maximum memory use-amount rising frequency and a last memory use amount to judge whether memory leakage exists. According to the method, the JVM memory use information can be automatically acquired, the memory use information of the JVM can be acquired in a more timely manner after GC completion, the accurate memory information is obtained without the need for external connection or instruction calling, and normal running of programs is not impacted; and further, when it is determined that memory leakage exists, alarming is triggered, thus a system maintainer is informedof possible existence of a system memory problem in advance, and an effect of locating the problem as early as possible is facilitated.

The invention relates to an interrupt routing environment recovery method for the Feiteng processor dormancy process. The method comprises the steps that the saving sub-process of an interrupt routingenvironment is performed and particularly comprises the substeps of saving an ITS register environment and writing back ITS cache, and a dormancy mirror image is made; an operation system is startedagain; the recovery procedure after dormancy of the processor is started according to the dormancy mirror image, and a memory environment is recovered; the recovery sub-process of the interrupt routing environment is performed, and the interrupt routing environment is recovered; interrupt, equipment and processes are recovered, and then system recovery is completed. The method has the advantages that the implementation mode is ingenious, by means of organization design of a related register, a memory, cache processing and an interrupt route in an interrupt controller, consistent recovery of the interrupt routing environment of the dormancy process under a Feiteng processor platform is achieved, and the memory problem that after the system memory environment is recovered, the process address space is deleted is avoided.

The invention provides a set top box method and system in support of two-way recording. The invention relates to a set top box two-way recording method, the set top box system in support of the two-way recording and a method in support of intelligently recommending a user to delete / store a recording file. According to the method and the system, a double-tuner chip scheme is employed. Compared witha conventional television set top box, the method and the system have the advantage that the cross-frequency point recording can be carried out through one way. Moreover, an automatic time shift function can be realized. For a memory problem of a storage device, when the storage space is insufficient, the user is prompted whether to delete old files or not according to usual watching interests ofthe user. For a user habit problem, when the memory is sufficient, the set top box can automatically record some programs, so the use convenience of the user is improved.

The embodiment of the invention discloses a data transmission method and device, a terminal and a storage medium. The method comprises the following steps that in the process that a first terminal transmits data to a second terminal, the first terminal receives the feedback data sent by the second terminal for multiple times, analyzes the feedback data to obtain multiple pieces of memory capacityinformation of the second terminal, judges whether the multiple pieces of memory capacity information of the second terminal meet a preset condition or not, and interrupts data transmission and generates prompt information if the multiple pieces of memory capacity information of the second terminal meet the preset condition. In the data transmission process of a first terminal and a second terminal, feedback data sent by the second terminal for multiple times are obtained; according to the WIFI direct connection method and device, the first terminal can interrupt data transmission in time andsend out prompt information when the memory capacity information of the second terminal meets the preset condition, data retransmission caused by accidental interruption of the memory problem in the transmission process is avoided, and the WIFI direct connection data transmission efficiency is improved.

Disclosed herein are compositions and methods for treating a variety of mood and behavioral disorders, including attention deficit hyperactivity disorder (ADHD), anxiety, depression, memory loss, as well as other conditions. Also disclosed herein are methods for diagnosing certain conditions, such as ADHD, using these compositions.