whether the auto_increment of the primary key has any impact. let's test it:
mysql> insert into t1(b,c) select 'r4','r5'; Query OK, 1 row affected (0.05 sec) Records: 1 Duplicates: 0 Warnings: 0 mysql> select * from t1; +---+----+----+ | a | b | c | +---+----+----+ | 1 | c3 | c2 | | 2 | a | | | 3 | r2 | r3 | | 5 | r4 | r5 | +---+----+----+ 4 rows in set (0.00 sec)
[] From this we can see that the new au
then test:
mysql> INSERT INTO T1 (b,c) Select ' R4 ', ' R5 ';
Query OK, 1 row affected (0.05 sec)
records:1 duplicates:0 warnings:0 mysql>
select * from T1;
+---+----+----+
| a | b
| +---+----+----+
| 1 | c3 | c2 |
| 2 | A | | |
3 | R2 | R3 |
| 5 | R4 | R5 |
+---+----+----+
4 rows in Set (0.00 sec)
"From here we can see that the new self increase is not starting from 4, but starting from
For more information about realboard, visit the official website of huizhi technology.Www.hugacy.com
Download a 2440 ucosii version from the Internet, and run it on the realboard simulator. Suddenly, it's a zombie. I immediately followed it step by step with the debugger, and finally found the culprit.Code:
BL readnandidMoV R6, #0LDR r0, = 0xec73CMP R5, R0Beq % F1LDR r0, = 0xec75CMP R5, R0Beq % F1
Lab requirements and application environment:1. Execute two-way re-release on R5, and then execute two-way re-release on R32. analyze the causes and solutions of the second-tier route3. How can I achieve Load Balancing when R4 is required to go to 1.1.1.1?4. Ask R4 to go to the next hop of 11.11.11.11 first R3 and R5 for backup. How can this problem be solved?
Experiment debugging process:R1 Configuration:
Tutorial topology:
650) This. width = 650; "src =" http://s3.51cto.com/wyfs02/M00/47/BF/wKiom1P_THjC8klUAAFlyn6ovHE323.jpg "Title =" 1.png" alt = "wkiom1p_thjc8kluaaflyn6ovhe323.jpg"/>
R3 is a gateway, R4 is an egress router, and DHCP is used. R5 is a vro on the Internet.
Lab requirements: 1. Three PCs belong to three VLANs
2. R1 and R2 are used for Link aggregation.
3. The Gateway ends at R3 to implement inter-VLAN routing.
4. C1, C2, and C3 obtain
code is mostly position independent, so if you link the kernel* 0xc0008000, you call this AT _ Pa (0xc0008000 ).** See Linux/ARCH/ARM/tools/Mach-types for the complete list of machines* Numbers for R1.** We're re trying to keep crap to a minimum; do not add any machine specific* Crap here-that's what the Boot Loader (or in extreme, well justified* Circumstances, zimage) is.*/. Section ". Text. Head", "ax"Entry (stext)MSR cpsr_c, # psr_f_bit | psr_ I _bit | svc_mode @ ensure SVC Mode@ And irqs d
From the Internet found a neon command optimization yuv420 to rgb24 code, in the cortex-A8 architecture, clock speed 1g CPU for a frame of qcif (176x144) data test, in addition, compared with the popular algorithm written in C on the Internet, it is found that the speed of the former is more than 700 times that of the latter: the former uses 1000 ms for 112 cycles, and the latter uses 88645 Ms. The related code is as follows:
Assembly Code
Area |. text |, code, readonly; name this block of code
, figure 1 sets a retention station for each command, while some processors use a retention station to control all pipelines.
Reverse dependency
Unordered execution can complete other tasks within the waiting time to improve efficiency, but it may also cause problems. For example, the following program.
LD R1, [a]; then reads the memory variable A into the register r1 (loaded)
Add R2, R1, R5; then R1 and
First, the C1 and C2 VLAN are set on the switch R5
r5>en
R5#conf T
R5 (config) #vlan 10
R5 (Config-vlan) #vlan 20
R5 (Config-vlan) #inter FA1/1
R5 (config-if) #switchport Access V
R3
R3 (config) # int ser 0/1 // interface connected to the county-level Router
R3 (config-if) # ip add 192.168.5.1 255.255.255.0
R3 (config-if) # no shut
R3 (config-if) # ip add 192.168.5.2 255.255.255.0
R3 (config-if) # int ser 0/0 // interface connected to internal Ethernet
R3 (config-if) # ip add 192.168.3.1 255.255.255.0
R3 (config-if) # no shut
R4
Router # config t
Router (config) # line con 0
Router (config-line) # logg sy
Router (config-line) # no exec-timeout
Router (config
Cough... some recently written code has CodeReview... but... I don't know which one can pass... PS: the PHP version is 5.4, so don't worry about [] what it is... this is array {code ...} cough... some recently written Code has Code Review...
But... I don't know which one can pass...
PS: PHP version 5.4, so don't worry about [] What is... This is array
// 1$rule = ['pid=etfscreenerformsubmit=1etfpage=1cn=cnUScf=go=ta=er=er1ry=r1=r3=r5=tac=1erc=1ryc=1r
Lab requirements:Set up the topology, import the pre-configuration, and troubleshoot the following errors.1. R4 cannot learn the host entries mounted on R5;2. The OSPF neighbor between R6 and R7 cannot start;3. R4 cannot form OSPF neighbors with R2 and R3;4. R7 cannot form an IPsec neighbor with R8 or R9;5. The host on R5 cannot be pinged to the host on R9;6. Ensure that the packets sent from the host on R5
assembly file or a segment does not mean that the execution is complete first.Head. s to execute head-s3c2410.s, or pay attention to the link segment, apparently head. sIn a short time, another segment is started. Text.. TextADR r0, lc0Ldmia r0, {R1, R2, R3, R4, R5, R6, IP, SP}Subs r0, R0, R1 @ calculate the Delta offsetAnd our head-s3c2410.s?. Section ". Start", # alloc, # execinstr_ S3c2410_start:Bic R2, PC, # 0x1fAdd R3, R2, #0X4000 @ 16 KB is qui
, etc ). multiple tags are shown in. the MTU is extended due to the introduction of tags. the label length is 4 bytes. According to CISCO's suggestion, the system MTU is set to 1524. If the label is encapsulated over Ethernet, the 24-byte label can carry the insertion of 6 labels, generally, the six labels are suitable for almost all applications. A topological environment composed of the following six routers is an experimental diagram of this part.R1 (IPS1) and R2 (Border1) are EBGP neighbors,
Cough... Some of the code that I wrote recently is a Review ...
But ... I don't know what kind of a ...
The ps:php version is 5.4 so don't tangle [] what's up ... This is the array.
1$rule = [' pid=etfscreenerformsubmit=1etfpage=1cn=cnuscf=go=ta=er=er1 Ry=r1=r3=r5=tac=1erc=1ryc=1r5c=1 ', ' pid=etfscreenerformsubmit=1 Etfpage=1cn=cnuscf=go=ta=er=er2ry=r1=r3=r5=tac=1erc=1 ryc=1r5c=1 ', ' pid=etfscreenerforms
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