recovery benchmark.
SQL Server has a series of stunning records on the Microsoft Windows Nt®server platform that delivers the industry's best performance and best price/cost. When it was released in November 1998, SQL
Server 7.0 creates new records for Baan, PeopleSoft, tpc-c single node performance, and backup and recovery benchmark tests on the Windows NT server platform.
Two. Independent software vendors (isv,independent Software vendor) Benchmark
Hundreds of independent software vendors
communicates between them by sending interrupts to each other. By giving the interrupt additional actions (actions), different CPUs can control each other to some degree. Each CPU has its own APIC (the local APIC of that CPU), and there is an I/O APIC to handle interrupts caused by I/O devices, the I/O APIC is installed on the motherboard, but the APIC on each CPU is indispensable, Otherwise, you will not be able to handle interrupt coordination between multiple CPUs.2, the same product model,
called by the system, the Ring3 enters Ring0, which wastes a lot of CPU cycles, for example, system calls must be directed from Ring3 to Ring0 (except for the INT command called by the kernel, most of which are performed by the Hacker kernel module). The level before and after permission escalation is fixed, CPL must be 3, and the DPL of INT 80 must be 3, so that the CPU checks the DPL of the gate Descriptor and the CPL of the caller is completely unnecessary. Because of this, Intel x86 CPU sta
bath2009.02.25 guide to Western Classical Music Appreciation2009.02.25 guide to Driver Design for Windows NT Devices2009.02.25 C # function utility Manual2009.04.07 C # Advanced Programming2009.04.07 introduction to roboticsOperating System 2009.04.072009.04.07 Linux programming Essence2009.05.05 dos secrets2009.05.05 spring and autumn in ten countries. Volume 1 to Volume 32009.05.11 intel series microprocessor architecture and programming interface title: The intel microprocessors: 8086/8088,
Typical Pentium software delay loops can be written using mov and loop instructions.For example, the following instruction sequence can be used for a delay loop: mov CX, countdelay: loop delayThe initial loop counter value of "Count" can be calculated using the cycles required to execute the following Pentium instructions: mov REG/Imm (1 cycle) loop label (5/6 cycles)Note that the
.//////////////////////////////////////// //////////////////////////////////////// ///////////////////////////
{
Large_integer privious, current, elapse;
Queryperformancecounter ( privious );
Current = privious;
While (current. quadpart-privious. quadpart
Queryperformancecounter (counter t );
Elapse. quadpart = current. quadpart-privious. quadpart;
Return elapse;
}
Note: Do not forget to add a function declaration for this function in the header file.
Now, you can compile and execute this proje
(large_integer interval)
//////////////////////////////////////// //////////////////////////////////////// /////////////////////////////
// Function: perform the actual latency Function
// Parameter: The interval parameter is the number of time-related delays to be executed.
// Return value: returns the number of time-related values after the function is executed.
//////////////////////////////////////// //////////////////////////////////////// ///////////////////////////
{
Large_integer privio
.//////////////////////////////////////// //////////////////////////////////////// ///////////////////////////
{
Large_integer privious, current, elapse;
Queryperformancecounter ( privious );
Current = privious;
While (current. quadpart-privious. quadpart
Queryperformancecounter (counter t );
Elapse. quadpart = current. quadpart-privious. quadpart;
Return elapse;
}
Note: Do not forget to add a function declaration for this function in the header file.
Now, you can compile and execute this
is very little chance of such a situation. Maybe some VB programmers have never met it, but it does exist.
There are several options in the local code:
A) code Speed Optimization: This option can compile execution files that are faster, but the execution files are relatively large. Recommended
B) Code Size Optimization: This option can compile a relatively small execution file, but it is not recommended at the cost of speed.
C) No optimization: This option only converts the p-code to the
error applies only to Pentium processor, Pentium processor and MMX technology, Pentium OverDrive processor, and Pentium OverDrive processor with MMX technology. The Pentium Pro processor, Pentium II processor, and IMG and earlier
solved this problem by adding the DoEvent statement to the code. Of course, there is very little chance of such a situation. Maybe some VB programmers have never met it, but it does exist.
There are several options in the local code:
A) code Speed Optimization: This option can compile execution files that are faster, but the execution files are relatively large. Recommended
B) Code Size Optimization: This option can compile a relatively small execution file, but it is not recommended at the cos
(1) ItaniumPentium and Itanium are Intel, Pentium for home machines, Itanium is the next generation server CPU, the new architecture mainly supports 64-bit systems.Pentium, core and Celeron, these three are all Intel's CPU series code. Pentium is the earlier high-end products, now the basic offline, core is Pentium after the high-end successor, Celeron is low-end
execution files that are faster, but the execution files are relatively large. Recommended
B) Code Size Optimization: This option can compile a relatively small execution file, but it is not recommended at the cost of speed.
C) No optimization: This option only converts the P-code to the local code without any optimization. It can be used when debugging code.
D) Optimization for Pentium Pro: although this option is not the default option in the lo
processor generates a special bus cycle to indicate the Enter stop mode. The hardware responds to this signal in several ways. The indicator light on the front panel lights up, generating an NMI interrupt to record diagnostic information, calling the reset initialization process (note that the binit# pin was introduced in the Pentium Pro processor). If non-wake events (such as a20m# interrupts) are not processed during the outage, they are processed
operation of the memory is performed atomically. In processors prior to Pentium and Pentium, instructions with a lock prefix lock the bus during execution, leaving other processors temporarily unable to access memory through the bus. Obviously, this will cost you dearly. Starting with the Pentium 4,intel Xeon and P6 processors, Intel has made a significant optim
program determines whether to add a lock prefix to the CMPXCHG directive based on the current processor type. If the program is running on a multiprocessor, add the lock prefix (lock CMPXCHG) to the cmpxchg instruction. Conversely, if the program is running on a single processor, the lock prefix is omitted (the single processor itself maintains sequential consistency within a single processor and does not require the memory barrier effect provided by the lock prefix).The Intel manual describes
jint* dest, Jint compare_value) { //Alternative for InterlockedCompareExchange int MP = OS::IS_MP (); __asm { mov edx, dest mov ecx, exchange_value mov eax, compare_value lock_if_mp (MP) Cmpxchg DWORD ptr [edx], ecx }}As shown in the source code above, the program determines whether to add a lock prefix to the CMPXCHG directive based on the current processor type. If the program is running on a multiprocessor, add the lock prefix (lock CMPXCHG) to the cmpxchg instruct
:inline jint atomic::cmpxchg (jint Exchange_value, volatile jint* dest, Jint compare_value) { //Alternative for InterlockedCompareExchange int MP = OS::IS_MP (); __asm { mov edx, dest mov ecx, exchange_value mov eax, compare_value lock_if_mp (MP) Cmpxchg DWORD ptr [edx], ecx }}As shown in the source code above, the program determines whether to add a lock prefix to the CMPXCHG directive based on the current processor type. If the program is running on a mult
option simply converts P-code to native code, without any optimizations. Can be used when debugging code.
D for Pentium Pro optimizations: Although this is not the default option in native code, I usually use this option. The executable program compiled by this option can run faster on machines with more than 2 Pentium Pro and Pentium, and slightly slower on ol
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