r7 260x

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Time when the disk reads data

Label: Data sp c time r BS as informationThe arrangement of data stored on the disk affects the total time of the I/O service.Assume that each track is divided into 10 physical blocks, each of which stores one logical record. Logical record R! Logical records. The logical records R1, R2, Zookeeper, and R10 are stored on the same track. The order of the records is shown in the following table:Physical Block 1 2 3 4 5 6 7 8 9 10Logical record R1 R2 R3 R4 R5 R6

Tiny6410 bare metal programming -- (2) Assembly light-up led

The tiny6410 Development Board supports both NAND and SD startup modes. In my understanding, it means "nc" is not connected. Om [] = 01111, boot_eint [] = 000, refer to the following table to indicate that the SD card is enabled. The switch is not described in the schematic. The LED diagram is as follows: Gpk4, 5, 6, and 7 light-emitting diodes are switched ON when the light-emitting diode is switched on. Arm Assembly MoV command 1: Syntax: 2: 3:

Replace into and insert ..... On duplicate key update... The real difference

filled with the default value. 2.1 OK, Let's see insert into... on duplicate key update, mysql> insert into t1(a,b) select '3','r5' on duplicate key update b='r5';Query OK, 2 rows affected, 1 warning (0.19 sec)Records: 1 Duplicates: 1 Warnings: 1mysql> select * from t1;+---+----+----+| a | b | c |+---+----+----+| 1 | c3 | c2 || 2 | a | || 3 | r5 | r3 || 5 | r4 | r5 |+---+----+----+4 rows in set (0.00 sec) [] When a = 5, the original C value is still there, which means that when the ke

Linux Kernel startup address

) create a cache required for the C program to run and allocate 64 K stack space. (8) R2 indicates the cache end address, R4 indicates the last execution address of the kernel, and R5 indicates the start address of the kernel object. Check whether the address conflict exists. Set R5 to R2 so that the kernel address after decompress is after the 64 K stack. (9) Call the decompress_kernel () function of the file Misc. C, decompress the kernel at the end of the cache (after the R2 address ). The re

PowerPC-based Linux kernel tour: 2nd station-_ secondary_start (start_here)-bottom

the vsid, R4 stores the virtual address, R5 stores the Linux page table entry, and R6 stores the Linux PTE before _ page_hashpte, r7 saves the offset to the address (0 when MMU is enabled and-kernelbase: 0xc0000000 when off ). Let's take a look at several hash_page_patches, which involve two functions in hash_low_32.s. create_hpte is relatively simple. The function is to create hpte. In the assembly code, it is to fill R5, as shown below: _ Global (c

Linux mobile phone DIY. kernel preliminary study. Brief Introduction to system background startup

address* R5 = start of this image* R2 = end of malloc space (and therefore this image)* We basically want:* R4> = R2-> OK* R4 + image length */CMP R4, r2BHS wont_overwriteAdd r0, R4, #4096*1024 @ 4 MB largest kernel sizeCMP r0, R5BLS wont_overwrite MoV R5, R2 @ decompress after malloc SpaceMoV r0, R5MoV R3, r7BL decompress_kernel Add r0, R0, #127Bic r0, R0, #127 @ align the kernel Length/** R0 = decompressed kernel Length* R1-r3 = Unused* R4 = kernel execution address* R5 = decompressed kernel

Usleep-System Call process-and inaccurate problems-android4.0.1

understand it? Paste the code first and then ask Google if you don't understand it. /* autogenerated by gensyscalls.py */#include What is _ nr_nanosleep, intuition, certainly defined in sys/linux-syscalls.h. Open/libc/include/sys/linux-syscalls.h and search _ nr_nanosleep, understand, it defines the value of _ nr_nanosleep (_ nr_syscall_base + 162 ), actually, the system call number is defined. This is connected to the previous article SWI. The above code passes the system call number to

Arm Assembly language subroutine Design Method

]! ; Push parameter E into the stack BL subr; 2) Call the subroutine subr Add SP, SP, #8; 8) balance the stack. Subr is returned here, and the returned value is saved in R0. Subr Stmfd SP !, {R4-R7, FP, LR}; 3) Save the working register, FP, and LR Add FP, SP, #16; 4) Calculate the frame pointer Sub sp, SP, #8; 5) Allocate space for local variables LDR R4, [FP, #8]; loading parameter E LDR R5, [FP, #12]; load parameter F ... ; Subr subroutine body Ad

Solution for ghost version ts1014

Easy to understand 1,SW1:Interface ethernet0/0, 1, 2, 3Switchport trunk allowed VLAN add 12 VLAN 200No shut Sw2:Interface vlan12IP address 172.16.0.22 255.255.255.252 R7:Ip dhcp poolDefault-router 172.16.100.1 2,R12:AAA authentication PPP default group TACACS + local Int S4/0PPP authentication chap IP local pool P17 145.67.89.22 R17:No username R12 password Cisco 3,R21, R22:No prefix-suppression in OSPF Proces

What is SVC mode?

address in R14. All R14 instances must be saved to other registers (not actually valid) or a stack. This register has a shadow Register in each processor mode. Once the connection address has been saved, this register can be used as a general register.Register 15 is the program counter. In addition to holding the 26-digit number of the address currently used by the instruction program, it also holds the status of the processor.Provide the following charts for clarity: User Mode SVC mode IRQ mod

Cisco entry-level test (O & M)

Telnet:Hold session: ctrl + shift + 6, Press x,Then, you can display the session you initiated on your device: show session.If you want to return your own session: You can quickly double-click and press enter, or you can use resume 1 View the sessions initiated by R5.R5 # show sessionConn Host Address Byte Idle Conn Name* 1 192.168.1.1 192.168.1.1 0 0 192.168.1.1R5 #[Resuming connection 1 to 192.168.1.1...]R7 #R5 # remR5 # resume 1[Resuming connectio

How to deploy and branch SVN

have shown you the whole process, my sweat is down, I want to strike, but in the end we still look at all the log information, through log can find all the things we do:R1-R7 is exactly what I was doing, from the message you can find out what I've done with trunks and branch, and in the lower left corner of the Log Messages window, you can see the additional merge by checking "Include merged revisions". Information:The gray is the log associated with

SVN's Merge Use example

repeat the 6-10 steps.11. Merge branch back to TrunkRight-click on the/trunk/myproject (note Right-click on the main Line's directory), select "TortoiseSVN", then "Merge ...", and in the popup window, merge type Select the second item "reintegrate a branch" , this type of merge is suitable for merging all changes back to the mainline after the branch development is complete.After clicking Next, the following window appears:Here, the from URL selects/branches/myproject without selecting the revi

SVN branch and merge (SVN switching branch and merge) detailed

branchHere I have shown you the whole process, my sweat is down, I want to strike, but in the end we still look at all the log information, through log can find all the things we do:R1-R7 is exactly what I was doing, from the message you can find out what I've done with trunks and branch, and in the lower left corner of the Log Messages window, you can see the additional merge by checking "Include merged revisions". Information:The gray is the log as

Replaceinto and Insertintoonduplicatekeyupdate true _ MySQL

'3','r5' on duplicate key update b='r5'; Query OK, 2 rows affected, 1 warning (0.19 sec) Records: 1 Duplicates: 1 Warnings: 1 mysql> select * from t1; +---+----+----+ | a | b | c | +---+----+----+ | 1 | c3 | c2 | | 2 | a | | | 3 | r5 | r3 | | 5 | r4 | r5 | +---+----+----+ 4 rows in set (0.00 sec) [] When a = 5, the original c value is still there, which means that when the key is sometimes, only the following udate operation statement is executed. 2.2 check the auto_increment status again. mysq

Replaceinto and Insertinto... onduplicatekeyupdate... _ MySQL

; + --- + ---- + | A | B | c | + --- + ---- + | 1 | c3 | c2 | | 2 | a | | 3 | r5 | r3 | | 5 | r4 | r5 | + --- + ---- + 4 rows in set (0.00 sec) [] When a = 5, the original c value is still there, which means that when the key is sometimes, only the following udate operation statement is executed. 2.2 check the auto_increment status again. Mysql> insert into t1 (a, B) select '3', 'r5 'on duplicate key update B = 'r5 '; Query OK, 2 rows affected, 1 warning (0.19 sec) Records: 1 Duplicates: 1 War

C # regular expression,

, die for something $", RegexOptions. Multiline );Console. WriteLine ("r2 match count:" + r2.Matches (I). Count); // 0Regex r3 = new Regex ("^ Live for nothing, \ r \ ndie for something $ ");Console. WriteLine ("r3 match count:" + r3.Matches (I). Count); // 1Regex r4 = new Regex ("^ Live for nothing, $ ");Console. WriteLine ("r4 match count:" + r4.Matches (I). Count); // 0Regex r5 = new Regex ("^ Live for nothing, $", RegexOptions. Multiline );Console. WriteLine ("r5 match count:" + r5.Matches (

3000 Yuan flagship APU game Computer Configuration recommended

Recommend the following practical APU nuclear display Computer Configuration, performance can also be very good to meet the mainstream games, audio-visual entertainment, students and office and other needs. Nuclear display wayward installed 3000 Yuan flagship APU practical game Computer Configuration recommended Accessory Name Brand model Reference price Processor AMD a10-7870k flagship APU (boxed) ¥899 Radiator Boxed Self-t

C # Regular Expression Classic Collation collection manual 1th/3 page _ Regular expression

r2 = new Regex ("^live for Nothing,die for something$", regexoptions.multiline); Console.WriteLine ("R2 Match count:" + R2.) Matches (i). Count);//0 Regex r3 = new Regex ("^live for Nothing,\r\ndie for something$"); Console.WriteLine ("R3 Match count:" + R3.) Matches (i). Count);//1 Regex r4 = new Regex ("^live for nothing,$"); Console.WriteLine ("R4 match count:" + R4.) Matches (i). Count);//0 Regex R5 = new Regex ("^live for nothing,$", regexoptions.multiline); Console.WriteLine ("R5 M

2015 latest May Edition notebook graphics Ladder chart

NBSP; NBSP; hd 7970M NBSP; GTX 770M GTX 860M GTX 675M GTX 765M GTX 760M GTX 850M R9 m275x HD 6990M HD 8870M GTX 670M GT 755M R9 m270x HD 7870M HD 6970M gtx 660M gt 750M

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