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1) When learning a computer, we often hear that the 1k,1m,1g bit is the smallest unit of data in a computer, a 16-bit machine, a 32-bit machine that is often heard, which is referred to as a bit.A byte (byte) is the unit in which the computer processes data, and the computer processes the data in bytes.1Byte = 8 bitUsually the 1k,1m,1g we hear refers to the number of bytes, and 1KB,1MB,1GBIn the computer,

client_header_buffer_size is used to specify the Headerbuffer size from the client request header. For most requests, the buffer size of 1K is sufficient, and if you customize the message header or have a larger cookie, you can increase the buffer size. This is set to 32K. large_client_header_buffers is used to specify the maximum number and size of caches for large headers in a client request, "4" is the number, "128K" is the size, and the maximum

, caching, database, external interface access, in order to avoid the business execution delay blocking IO thread execution resulting in throughput degradation, usually separates the IO processing thread and the business processing thread, So our test cases also configured the business execution thread pool to examine the scheduling performance of their thread pools. mina thread pool settings IO processor: nbsp ; ioacceptor acceptor =newniosocketacceptor (Integer.parseint (Iopool));

;Client request the buffer size of the head, this can be set according to your system paging size, generally a request header size will not exceed 1k, but because the general system paging is greater than 1k, so this is set to paging size. The paging size can be obtained with the command getconf pagesize.open_file_cache max=102400 inactive=20s;This will specify the cache for the open file, which is not enab

(1-1/k) ^n, which is the probability of each bucket is empty. The number of barrels is k, so the expected empty bucket number is C (empty bucket number) =k (1-1/k) ^n, this formula is not good calculation, with the program run may also be zeroed, conversion is easy to calculate: C (number of empty barrels) =k (1?1k) n=k (1?1k) K (NK) =ke (NK) (1) Again we simulate the test:View CodeOutput Resul

*worker_connections per nginx server.6. Keepalive_timeout60;KeepAlive time-out period.7. client_header_buffer_size4k;Client request the buffer size of the head, this can be set according to your system paging size, generally a request header size will not exceed 1k, but because the general system paging is greater than 1k, so this is set to paging size.The paging size can be obtained with the command getcon

-web1Third, start Saltstack service1. Service-side Start Salt-master Service (12.22)Chkconfig Salt-master on/etc/init.d/salt-master start2, the controlled End start Salt-minion Service (12.25)Chkconfig salt-minion on/etc/init.d/salt-minion startIv. viewing the list of public keys on the master side1, 12.22 operationSalt-key-lAccepted Keys:Lvs-web1Denied Keys:unaccepted Keys:Rejected Keys:2. Test the connectivity of the host, the usage of the hard disk, the network interface addressTest the conne

configuration file.4. Disable SSI (server-side reference) on the serverThis can be done by adding SSI off in the location block;.5. Turn off server taggingIf turned on (by default) all error pages will display the server's version and information. Add the server_tokens off; the declaration is added to the Nginx configuration file to resolve this issue.6. Setting custom caches in configuration files to limit the likelihood of buffer overflow attacks 1 2 3 4 client_body_buffer _s

version and information. To resolve this issue, add the Server_tokens off declaration to the Nginx configuration file. 　　 6. Set the custom cache in the configuration file to limit the possibility of buffer overflow attacks. Client_body_buffer_size 1K;Client_header_buffer_size 1k;Client_max_body_size 1k;Large_client_header_buffers 2

byte.Since its internal registers and operators are 16-bit wide, to generate a 20-bit wide address, you have to use a certain conversion method. 8086 uses the method of paragraph plus offset .Then for this trillion of space is not all can be used arbitrarily, there are two areas reserved for special purposes. In this 1M byte memory space, the lowest 1K bytes are reserved as interrupt vector table extents, and the highest 16 bytes are reserved for the

be installed. Extensions disabled.If you subsequently install NET::SNMP and then you can enable the extensionsIn the routers2.conf file.2. GD does not appear to be installed. This was required for the compactSummary. If you intend to install it later, answer YES.Otherwise, Answer NO.Activeate Compact Summary screen [no]? Yes//Need GD3. How big should 1K and 1M is? The ' Usebigk ' parameter from therouters2.conf file. You have three options-' yes ', '

/* Problem Description: N Person (number 0~ (N1-1)), starting from 0 count, reporting (M-1) exit, the remainder continues to count off from 0. The winner's number.We know that the first person (the number must be m%n-1) after the dequeue, the rest of the n1-1 individuals formed a new Joseph Ring (starting with the person numbered k=m%n1):K k+1 k+2 ... n1-2, n1-1, 0, 1, 2, ... k-2And at the beginning of the K is reported 0.Now let's do a conversion of their numbers:n1=n+1;K--0-->0K+1-1-->

/error.log; #gzip compressed transport gzip on; Gzip_min_length 1k; #最小1K gzip_buffers 64K; Gzip_http_version 1.1; Gzip_comp_level 6; Gzip_types text/plain application/x-javascript text/css application/xml application/javascript; Gzip_vary on; #负载均衡组 #静态服务器组 upstream static.zh-jieli.com {server 127.0.0.1:808 weight=1;} #动态服务器组 upstream zh-jieli.com {server 127. 0.0.1:8080; #server 192.168.8.203:8080; } #配置代

= (U_char *) p + sizeof (ngx_pool_t); End points to the ending position of the entire memory block p->d.end = (U_char *) p + size; P->d.next = NULL; p->d.failed = 0; Size represents the amount of data space (the space that really holds the data, not including the size of the NGX_POOL_T header structure) size = size-sizeof (ngx_pool_t); P->max = (Size For example, to create a 1K-size memory pool, the memory layout after calling Ng

1. Command: DF2. Command function: Displays the available space for the specified disk file.3. Command parameters:-A#List of all file systems-H#easy to read mode display-H#equals "-h", but calculated, 1k=1000, not 1k=1024-I.#Display inode Information-K#Chunk is 1024 bytes-L#Show local file system only-M#Chunk is 1048576 bytes--no-sync#Ignore sync command-P#the output format is POSIX--sync#perform the sync c

delete a file of the specified size, as long as you modify the corresponding -size parameter, for example:The code is as followsFind. -name "*"-type f-size 1024c | Xargs-n 1 rm-fis to delete files of 1k size. (but be careful not to use-size 1k, this gets to occupy space 1k, not file size 1k).If you just delete the fol

thread and allocates a very small amount of 1k of memory within that thread, the entire process virtual memory immediately increases by 64M, then allocates, and the memory does not increase. The test code is as follows: #include #include #include #include using namespace Std;volatile bool start = 0;void * Thread_run (void *){while (1){if (start){cout Char *buf = new char [1024];start = 0;}Sleep (1);}}int main (){pthread_t th;GetChar (

Oracle Library failed because the disk is full, log the instructions to view disk capacity1. Command format:DF [Options] [file]-A All File system list-h easy to read mode display-H equals "-H", but the formula, 1k=1000, rather than 1k=1024-I display inode information-K block is 1024 bytes-L show local file system only-M block is 1048576 bytes--no-sync Ignore sync command-P output format POSIX--sync perform

according to different file types F Normal file D Catalog files L Symbolic Link File B Block device files C Character device files P Pipeline files S Socket file (iv), based on the size of the file find:-size [+|-] #UNIT common units: K, M, G #UNIT: (#-1, #]-#UNIT: [0,#-1] + #UNIT: (#, OO) 1, 1k: A3 o

,-d_fortify_source=2- Fexceptions-fstack-protector--param=ssp-buffer-size=4-m64-mtune=generic-fpic '--disable-strippingLibavutil 52. 66.100/52. 66.100Libavcodec 55. 52.102/55. 52.102Libavformat 55. 33.100/55. 33.100Libavdevice 55. 10.100/55. 10.100Libavfilter 4. 2.100/4. 2.100Libswscale 2. 5.102/2. 5.102Libswresample 0. 18.100/0. 18.100Libpostproc 52. 3.100/52. 3.100Input #0, FLV, from '/root/test.flv ':Metadata:Major_brand:isomminor_version:512Compatible_brands:isomiso2mp41encoder:lavf55.33.100