stdole2 tlb

) page_free (page); Tlb_invalidate (Pgdir, VA); }Over here void tlb_invalidate (pde_t *pgdir, void *va) { //Flush The entry only if we ' re modifying the current addres s space. For now, there are only one address space and so always invalidate. INVLPG (VA); }About TLB, you can see: http://blog.chinaunix.net/uid-16361381-id-3044981.htm Because the TLB is a cache of page table entries, because of thi

, through the loop, fill the PUD entry one by one, and assign and initialize the next order Page table.(4) If there is no possible 1G block address mapping, the code logic here is similar to the one in the previous section, except that the constant loop call Alloc_init_pud is changed to ALLOC_INIT_PMD. However, ARM64 's MMU hardware provides a gray, powerful feature that supports the 1G size block mapping, which can get a lot of benefits if applied: no need to allocate subordinate translation ta

a fixed buffer size in the cpu, which is called TLB. TLB contains part of the "page table" content, which also follows, keep data as close as possible to the cpu principle. In TLB, hugetlb is used to point to hugepage. The allocated hugepage is provided to the process as the memory file system hugetlbfs (similar to tmpfs. When a 4 k page is used to enable hugepa

This article describes how to use Huagepage and PGO to improve the execution performance of PHP 7. it is based on the related research of Laruence, a member of the PHP development team. For more information, see HugepagePHP7 has just released RC4, which includes some bug fixes and our latest performance improvement achievements, that is, "HugePageFy php text segment". by enabling this feature, PHP7 moves its TEXT segment (execution body) to the Huagepage. in the previous test, we can see 2% ~ 3%

*/ Int (* _ do_idle) (void ); /* * Processor architecture specific */ Struct {/* CACHE */ /* * Flush all caches */ Void (* clean_invalidate_all) (void ); /* * Flush a specific page or pages */ Void (* clean_invalidate_range) (unsigned long address, unsigned long end, int flags ); /* * Flush a page to RAM */ Void (* _ flush_ram_page) (void * pai_page ); } Cache; Struct {/* D-cache */ /* * Invalidate the specified data range */ Void (* invalidate_range) (unsigned long start, unsigned long end );

a translation of the logical address and physical address, which is done through the page table, and the conversion process is accelerated by the CPU VMM hardware, and the speed is very block.However, after the VM is introduced, the VM vaddr----->vm padddr--------->host paddr, first the VM needs to convert the logical address and physical address, but the physical address of the VM is the logical address of the host machine. Therefore, the conversion of the logical address to the physical addre

requires remote function call of the column set ( RPC ), That is, a method is required Testmethod And Release Are separated. Generally DLL , You can use Msidl.exe Analysis IDL File to generate a column set functionSource codeCompile and generate. However, this method is troublesome, So Microsoft provides Oleaut32.dll , There is a general interface column set function (but this function cannot list all interfaces, you can follow some rules for the column set interface, this will be discussed

problem of the element. The positioning is from the attribute position, top (left, right, bottom, and so on) and Z-index. The four attributes of the TLB depend on the position value. The position values are static, absolute, and relative. If postion is static, TLB will not take any position; position is absolute, and TLB will take the upper-left corner of its vi

A Brief Introduction to Linux mem Arch The first thing that comes to mind is the Linux mem map. 3G + 1g Simple painting 0 ~ 0x1000 4 K boot Secure Code: nullpointer affairs 0x1000 ~ 3G user space 3G-16 m ~ 3G module load mem Space 3G ~ 3G + 896 m physical mem: Direct Map Vm_start ~ Vm_end for vmalloc use Later protect space Other, the last page is used to put the error code Generally, ARM core has several mem ports, such as D-cache, I-cache, and DMA. The cached va must pass MMU to

CCW (COM callable wrapper) is a mechanism provided by vs2005. It can export. Net hosted DLL to a traditional com to facilitate VB6 and ASP calls. Below is a common example: 1> Create a General C # class library project in vs2005 and write the code //// Assume that the space is named cslib2 and the class name is class1 // the blue part is very important. // using system; Using system. Collections. Generic; Using system. text; Using system. runtime. interopservices; namespace cslib2 { [Classint

about. net classes,. NET provides a general "surrogate" DLL-Mscoree. dll-- Which acts as the wrapper and intermediary between the COM Client and the. NET class. hard-code a specific version number in your assemblyversion attribute in the assemblyinfo. CS file which is in your project. example: [assembly: assemblyversion ( " 1.0.0.0" )] Create a strong-name key pair for your assembly and point to it viaAssemblykeyfileAttribute inAssem

Source: http://www.temporaldoorway.com/programming/cbuilder/activex/headerfiles.htm Note: extract the excerpt from the study and write it into Chinese. The header files from an imported Control IntroductionThere are several header files generated by the act of importing an ActiveX control into C ++ builder. This article explains what they are, what they contain, and what they are used.This material is specific to bcb4 patch 1 and above.The filesThe following files ar

theClassInterface attribute [ ClassInterface (ClassInterfaceType. None)>] TypeMath () = Interface IMath Memberthis. Add (x, y) = x + y Memberthis. Sub (x, y) = x-y The Add and Sub functions are very simple. Therefore, it is no problem to implement them directly in the Math class. However, if you need to split them into other assistant functions other than the class, there is no problem either. You can use any method that you think is appropriate to implement class members. You only need t

Introduction to Xen and introduction to virtual xen 1. Introduction to related knowledge: 1> common disk I/O schedulers: CFQ: completely fair queue algorithm; Deadline: deadline algorithm; Anticipatory: sequential read/write queue algorithm/Expectation Algorithm; NOOP: no operation, the simplest scheduling algorithm; 2> how to replace the I/O Scheduling Algorithm: the default algorithm is CFQ; /Sys/block/ 3> memory: MMU: the abbreviation of Memory Management Unit. The Chinese name is the Memory

Recently, I made a program for querying Unicom numbers. Because it is an automatic query, I Need To screen the js pop-up prompt box on the webpage page to avoid program suspension, So I referenced microsoft mshtml. dll assembly, after the program is released, it is found that it can only be installed on machines with the VS runtime environment, and machines without this environment will receive an error message indicating that the microsoft mshtml assembly is missing and cannot be installed, aft

shown in the following figure: Figure 1 transition flow of messages ---------------- 2. Automation Object --- Component Technology Application. Automation is an advanced application based on COM technology. The essence of automation (simplest understanding): It inherits the interface of the idispatch interface. In the end, automation aims to eliminate the dependency on the type information during the compilation period (Com also has CLSID/IID/TLB/h

lot of threads and processes and the address space is large. To ensure system performance, the processor caches frequently used page table entries into the TLB. The TLB cache may cause cache Misses,os to try to avoid the resulting performance loss. The properties of the page in memory are defined in the Pages table entry. Pages can be read-only, read-write, and so on. Typically, an executable process typic

managed 326897Node 0, zone Normal pages free 3232166 managed 3604347Node 1, zone Normal pages free 3980110 managed 4128056PagePage is the basic unit of Linux underlying memory management with a size of 4KB. A page is mapped to a contiguous amount of physical memory, and the allocation and deallocation of the memory is done in page units. The mapping of the process virtual address to the physical address is also done through the page table, where each item o

. The outgoing traffic is distributed according-to-the-current load (computed-relative-the-speed) on each slave. Incoming traffic is received by the current slave. If the receiving slave fails, another slave takes over the MAC address of the failed receiving slave. Prerequisite:ethtool the base drivers for retrieving, the speed of each slave.Features: Balance-tlb mode through to-end equalization out (outgoing) traffic. Since it is balanced based on th

the program, while the MMU hardware uses the actual physical memory address when mapping, its implementation is implemented by the function in Include/asm-i386/mmu_context.hinclude/asm-i386/mmu_context.h static inline void switch_mm (struct mm_struct *prev, struct mm_struct *next, struct task_s Truct *tsk, unsigned CPU) {if (prev! = next) {/* Stop flush IPIs for the previous mm */Clear_bit (CPU, Amp;prev->cpu_vm_mask); /* * Re-load LDT if necessary */if (prev->context.segment