inspiron 3542

Linux_5 command for obtaining Linux host information when the Linux system administrator takes over a new server, if there is no good handover document, the host information we can get depends on ourselves. A lot of information can be obtained directly from the host through commands. let's share it with you... linux_5 command for obtaining Linux host information when the Linux system administrator takes over a new server, if there is no good handover document, the host information we can get dep

　　HP 15-R221TX HP 15-R221TX is equipped with Intel Core i5 5200U processor, the main frequency 2.2GHz, the most Gao 2.7GHz, with 4GB memory and Nvidia GeForce 820M Independent graphics card, easy to play mainstream AV entertainment. 　　The more The Dell Inspiron 15 5000 The Dell Inspiron 15 5000 is equipped with the Intel Core i5 5200U processor, the main frequency 2.2GHz, the most Gao 2.7GHz, Web pa

14. In addition, the screen's black level, shadow detail, and maximum brightness (310 lux) are maintained at a good level. With the help of these parameters and matte coating, the E5 can be used normally even under the sun. However, this screen has a bit of a difference in color accuracy, and the average delta error we've measured is 9, and some colors even reach 10. As long as the error value is higher than 1, the naked eye can detect, so the E5 defect is still very obvious. In ac

In Linux:Netstat command[CPP]View Plaincopy [Email protected] ~]# Netstat-tulp Active Internet connections (only servers) Proto recv-q send-q Local address Foreign address State Pid/program Name Tcp00*:sunrpc *:* listen2151/ rpcbind TCP 0 0 *:50000 *:* LISTEN 3542/DB2SYSC 0 TCP 0 0 192.168.122.1:domain *:* LISTEN 2881/DNSMASQ tcp00 *:ftp *:* LISTEN 2640/vsftpd tcp00*:ssh *:* LISTEN 2611/sshd TCP 0 0 Localhost:ipp *:* LIST

some impact on the system performance.As a result, two words turned out: The process of converting data from a value type to a reference type is called boxing , and the process of converting from a reference type to a value type is "unboxing."If you compile the above code and view it in ILDASM(An IL anti-compilation Tool), you will find out what boxing and unboxing are like in the IL code. The IL code generated after the sample code is compiled is shown.　Seven, packing and unpacking performanc

performance.As a result, two words turned out: The process of converting data from a value type to a reference type is called boxing, and the process of converting from a reference type to a value type is "unboxing."If you compile the above code and view it in ILDASM (an IL anti-compilation Tool), you will find out what boxing and unboxing are like in the IL code. The IL code generated after the sample code is compiled is shown.Seven, packing and unpacking performance issuesIn order to figure o

process of converting data from a value type to a reference type is called boxing, and the process of converting from a reference type to a value type is "unboxing."If you compile the above code and view it in ILDASM (an IL anti-compilation Tool), you will find out what boxing and unboxing are like in the IL code. The IL code generated after the sample code is compiled is shown.Seven, packing and unpacking performance issuesIn order to figure out what the performance impact of boxing and unpack

assigned to the stack and are value types, such as:Box packing and unpackingLearning from the above, we learned a lot of useful things, the most useful of which is comes to move data from the stack to the heap when there will be a performance loss. As an example, when we boxed a value type into a reference type, the data is moved from the stack to the heap. Conversely, data is moved from the heap to the stack. This movement between the heap and the stack brings a loss of performance. The proces

of the group increases to 2 times that of the original group. The problem with this setting is that the slab is quite different and sometimes it is quite a waste of memory. Therefore, to minimize memory waste, the growth factor option was added two years ago. Let's take a look at the output of the current default settings (f = 1.25) (limited space, only 10th groups are written here ): slab class 1: chunk size 88 perslab 11915 slab class 2: chunk size 112 perslab 9362 slab class 3: chunk size 14

called "Packing", and the process from the reference type to the value type is changed to "unpacking ". If you compile the above Code and view it in ILDASM (an IL decompilation tool), you will find out what it looks like in the IL code. The IL code generated after the sample code is compiled is displayed. VII. packing and unpacking performance problems To understand the performance impact of packing and unpacking, We cyclically run the two function methods shown 10000 times. The first method c

524288 Perslab 2 As you can see, starting with a 128-byte group, the size of the group increases to twice times the original. The problem with this setting is that the difference between slab is large, and in some cases it is quite a waste of memory. Therefore, to minimize memory waste, two years ago this option was appended with growth factor. Take a look at the current default settings (f=1.25) when the output (space limit, this is only written to the 10th group): Slab class 1:chunk size Pers

Follow link 4018F (N)Time limit:2000/1000 MS (java/others) Memory limit:32768/32768 K (java/others)Total submission (s): 3542 Accepted Submission (s): 1219Problem DescriptionGiving the N, can you tell me the answer of F (N)?Inputeach test case contains a single integer N (1Outputfor each test case, output in a line the value of the F (N)%2009.Sample Input1230Sample Output1720Sourcehdu 2009-4 Programming Contest/* ************************************

called boxing, and moving from a reference type to a value type is called unpacking.Figure 8 Packing and unpacking process schematicIf you compile the above code in the same ildasm, you will see how the code in IL is boxed and unboxing, as shown in.Figure 9 Packing and unpackingPerformance impact of boxing and unpackingTo see the impact of the performance, we ran the following two functions 1000 times, as shown in the left-hand function has a boxing unboxing operation, the right function does n

in advance based on the (1) Series 2453 (4) 5 has a place ahead of schedule. It seems to be (1 )~ (2) process duplication 2534 (5) advances 5 to 2nd digits in the (1) series. 2543 (6) 4. A location is given in advance. It seems to be (1 )~ (2) process duplication (5 )~ (6) It seems to be (3 )~ (4) process duplication 3245 (7) Advances 3 to 1st places in the (1) series. 3254 (8) 5 advances a position. It seems to be (1 )~ (2) process duplication 3425 (9) Advances 4 to 2nd digits in the (7) ser

unboxing In order to see how the performance is impacted we ran the below two functions 10,000 times. one function has boxing and the other function is simple. we used a stop watch object to monitor the time taken. The boxing function was executed in 3542 MS while without boxing the code was executedin 2477 Ms. in other words try to avoid boxing and unboxing. in project you always need boxing and unboxing, use it when it's absolutely necessary. With

Slab Class 8: Chunk Size 16384 perslab 64 Slab Class 9: Chunk Size 32768 perslab 32 Slab class 10: Chunk Size 65536 perslab 16 Slab class 11: Chunk Size 131072 perslab 8 Slab Class 12: Chunk Size 262144 perslab 4 Slab class 13: Chunk Size 524288 perslab 2 It can be seen that, starting from the 128-byte group, the size of the group increases to 2 times that of the original group. In this case, the difference between Slab In some cases, memory is a waste. Therefore, to minimize memory waste, the

Size 184 perslab 5698 slab Class 5: chunk Size 232 perslab 4519 slab Class 6: Chunk Size 296 perslab 3542 slab Class 7: Chunk Size 376 perslab 2788 slab Class 8: Chunk Size 472 perslab 2221 slab Class 9: chunk Size 592 perslab 1771 slab class 10: Chunk Size 744 perslab 1409 It can be seen that the gap between groups is much smaller than the factor of 2, and it is more suitable for caching hundreds of bytes of records. From the above output, some ca

the heap to the stack. System performance is inevitably affected, whether it is moving from Stack to stack or from Stack to stack. As a result, two new terms emerged: when the data is converted from the value type to the reference type, it is called "Packing", and the process from the reference type to the value type is changed to "unpacking ". If you compile the above Code and view it in ILDASM (an IL decompilation tool), you will find out what it looks like in the IL code. The IL code genera