megabyte vs kilobytes

-Displays the maximum number of users that the server can log on at the same time %maxanonymous-Displays the maximum number of anonymous users that the server can log on at the same time User Information %name-Displays the login username %ip-Displays the user IP address of the login %dir-Displays the current directory for the logged in user %disk-Displays the current disk for the logged in user %dfree-Displays the current disk space for the logged in user, in MB %fup-Displays the number of fil

optimizing the user's program.The SY column shows the percentage of CPU time spent by the kernel process. The reference value for us + sy is 80%, and if Us+sy is greater than 80%, there may be a lack of CPU.The WA column shows the percentage of CPU time that the IO wait takes. The reference value for WA is 30%, and if WA exceeds 30%, the IO wait is serious, possibly due to a large amount of random access to the disk or the bandwidth bottleneck of the disk or disk access controller (mostly block

in kilobytes and GB. Pages in kilobytes are the same behavior as 4 KB. (That is, these page memory is not fixed and can be paginated.) ） To take advantage of the latest available page sizes, DB2 9 automatically detects the available page sizes in the system. If the 64KB page size is available, then DB2 sets the default size of some processes and all shared memory areas to

, positive values indicate low priority p last used CPU, only make sense in multi-CPU environments %cpu CPU time consuming percentage last updated to current Total CPU time used by the time process, in seconds time+ The total CPU time used by the process, in 1/100 seconds %mem Percent of physical memory used by the process The total amount of virtual memory used by the virt process, in kilobytes. The Virt=swap+res swap process uses the amount of

IDC ruser Real User nameD UID Process Owner's user IDe username of user process OwnerGroup name of the F group Process ownerThe terminal name of the G TTY boot process. Processes that are not started from the terminal are displayed as?H PR-PriorityI NI nice value. Negative values indicate high priority, positive values indicate low priorityThe last CPU used by J P is meaningful only in a multi-CPU environmentK%cpu CPU time consumption percentage last updated to currentThe total CPU time, in sec

Introduction to pmap in Linux 1. Introduction to pmap (1) Name: pmap-report memory map of a process (view the memory image information of a process) (2) usage pmap [-x |-d] [-q] pids... pmap-V (3) Option meaning-x extended Show the extended format. display the extended format-d device Show the device format. display Device format-q quiet Do not display some header/footer lines. -V show version Displays version of program. display version (4) extended format and device format domain Address: star

iterations in seconds (1 second by default ). accepts non-integer values such as 1.1 seconds. -p PID, -- pid = pid a list of processes/threads to monitor (all by default ). -u USER, -- user = user a list of users to monitor (all by default)-P, -- processes Only show processes. normally iotop shows all threads. -u USER, -- user = user a list of users to monitor (all by default)-P, -- processes Only show processes. normally iotop shows all threads. -a, -- accumulated Show accumulated I/O instead

Introduction to pmap in Linux 1. Introduction to pmap (1) Name: pmap-reportmemorymapofaprocess (view the memory image information of a process) (2) usage pmap [-x |-d] [-q] pids... p... introduction to pmap in Linux 1. Introduction to pmap (1) Name: pmap-report memory map of a process (view the memory image information of a process) (2) usage pmap [-x |-d] [-q] pids... pmap-V (3) option meaning-x extended Show the extended format. display the extended format-d device Show the device format. disp

Disk IO performance monitoring (Linux and Windows)End South [email protected]>The IO performance of a disk is an important indicator of the overall performance of a computer. Linux provides the Iostat command to obtain the disk input/output (i.e. IO) statistics, Windows provides the WMI interface, you can write a simple script to get the function equivalent to Iostat.1, Linux under the Iostat commandIostat-d-k-t 2The disk IO information is counted every 2 seconds until you press CTRL + C to term

Experiment content of Dynamic IPsec VPN in a star network: 1. Create a fully interconnected topology. 2. Take R1 as the center, so that R2 and R3 establish a neighbor relationship with R1 respectively, while the routes between R2 and R3 are not reachable. 3. Create a Dynamic IPsec VPN R1 # show run !! Crypto isakmp policy 100 hash md5 authentication pre-share group 2 lifetime 3600 crypto isakmp key ilovetg address 192.168.123.3crypto isakmp key ilovetg2008 address 192.168.123.2 !! Crypto ipsec t