-gcnew-gcutil-gccause
FGC
The number of times the full GC occurred.
-gc-gccapacity-gcnew-gcnewcapacity-gcold-gcoldcapacity-gcpermcapacity-gcutil-gccause
Fgct
The time spent by the full GC operation.
-gc-gcold-gcoldcapacity-gcpermcapacity-gcutil-gccause
GCT
Total time spent by GC operations.
-gc-gcold-gcoldcapacity-gcpermcapacity-gcutil-gccause
Ngcmn
Cenozoic minimum space capacity, in
South Korean researchers have built a network router consisting of an end-to-end computer component that can transmit data at record speeds. The router, created by the Korean Academy of Advanced Science and technology, is transmitting data at a speed of 40,000 megabits per second (gigabits), many times faster than the previous record for similar devices. The technology that researchers use may lead to breakthroughs in many ways, including the use of i
run; Hi: The percentage of hardware terminals; Si: The percentage of software terminals; Percentage of st:cpu stolen (such as virtual machines running on a real machine)4, KiB Mem: in kilobytes to view memory, physical memory;5, KiB Swap: In kilobytes view memory, virtual memory, usage 0, if more than 0 indicates that the physical memory is not enough, the use of virtual memoryProcess information
= Priority: Precedenceni= nice value: Negative priority > Positive priorityvirt= Virtual Image (KB): The total amount of VM memory used by the process, in kilobytes. Virt=swap+resRes= resident Size (KB): The amount of physical memory that the process uses, not swapped out, in kilobytesShr= shared Mem Size (KB): Shared memory sizes, in kilobytess= process Status: Progress State, D: Non-disruptive sleep state, R: Run, T: Trace/Stop, Z: Zombie Processtim
= Priority: Precedenceni= nice value: Negative priority > positive priorityvirt= Virtual Image (kb): The total amount of VM memory used by the process, in Kilobytes. Virt=swap+resRes= resident Size (kb): The amount of physical memory that the process uses, not swapped out, in kilobytesshr= shared Mem size (kb): shared memory sizes, in kilobytesS= process status: Progress state, D: non-disruptive sleep state, R: run, T: trace/stop, Z: Zombie Processtim
user processes that have changed precedence
99.7%id
CPU percent of idle CPU
0.1%wa
CPU percentage of processes waiting for input/output
0.0%hi
Percentage of CPU consumed by the hard interrupt request service
0.1%si
Percentage of CPU consumed by soft interrupt request Service
0.0%st
The St (steal Time) virtual percentage.
Physical memory information of the IV behavior:
c
look at it.
Memory displays information about the RAM:
[] swpd: Represents the amount of memory switched to the swap partition, in kilobytes.
[] Free: Indicates the amount of memory currently idle in kilobytes.
[] Buff: Represents the buffer size (to be written to disk) in kilobytes.
[] cache: Represents the buffer size (read from disk) in
priority
The total amount of virtual memory used by the VIRT process, in kilobytes. Virt=swap+res
The size, in kilobytes, of the physical memory used by the RES process and not swapped out. Res=code+data
SHR shared memory size, in kilobytes
S process state. d= non-disruptive sleep status r= run s= sleep t= track/stop z= zombie Process
%cpu pe
configuration can be completed without high engineering costs or on-site upgrades, you can provide the required bandwidth exactly as needed.
Ethernet can achieve this goal. Ethernet is ideal for submitting software-adjustable bandwidth from an optical fiber network. It is universally available at a low price and can easily reach 1 Gbps and soon reach 10 Gbps. If the optical fiber cables connected to the home door currently support Ethernet Optical Fiber Cabling Technology, a connection line can
improve network throughput and reduce network latency. In the newer kernel, there is a driver module called "Vhost-net", which is a kernel-level backend handler that puts Virtio-net's back-end processing tasks into the kernel space and reduces the switching of kernel space to user space, thus increasing efficiency.According to this article on the KVM website, vhost-net can provide a lower latency (latency) (10% lower than the e1000 virtual network card), and a higher throughput (throughput) (8
bandwidth from an optical fiber network. It is universally available at a low price and can easily reach 1 Gbps and soon reach 10 Gbps. If the optical fiber cables connected to the home door currently support Ethernet technology, a connection line can reach any speed from 64 K to several gigabits per second and can be used to access all WAN services.
Such flexible services represent the current DSL and the next high-speed technology after the cable-b
CPU performance. The size of the measurement indicator is related to the size of each object transmitted, usually tested with empty objects, Session rates around 100,000 sessions/s, and Xeon E5 in 2014.
Session concurrency
The indicator is associated with the previous indicator. This metric is related to server memory and the number of file descriptors that the system can handle. Usually each session occupies 34KB, that is, about 3W sessions occupy 1GB memory space, in fact, the socket buffer
); capital B Represents byte, that is, byte, one byte = eight digits, that is, 1B = 8B; the preceding capital K indicates a thousand characters, that is, a thousand characters (Kb) or kilobytes (KB ). Indicates the size unit of the file. Generally, bytes (Kb) are used to indicate the file size.Kbps: First, you need to know that PS refers to/s, that is, every second. Kbps indicates the network speed, that is, the number of
ID E username of user process Owner Group name of the F group Process owner The terminal name of the G TTY boot process. Processes that are not started from the terminal are displayed as? H PR -Priority I NI Nice value. Negative values indicate high priority, positive values indicate low priority The last CPU used by J P is meaningful only in a multi-CPU environment K %cpu CPU time consumption percentage last updated to current The total CPU time, in seconds, used by the timing
Bit rate is the number of digits transmitted per unit time during data transmission. Generally, the unit is kbps, that is, kilobytes per second.
A more general understanding is the sampling rate. The larger the sampling rate per unit time, the higher the accuracy. The closer the processed file is to the original file, that is, the richer the image details. But the file volume is proportional to the sampling rate, that is, the higher the bit rate, the
memory 173656k used total amount of physical memory used 17616k free memory total 22052k buffers used as memory amount for kernel cache Swap : 192772k Total swap area totals 0k used the total amount of swap used 192772k free swap area total 123988k cached buffer swap area total. Process Information Area:The details of each process are shown below the statistics area. Let's start by understanding the meaning of the columns.Column name meaningPID Process IDUsername of user Process OwnerPR-
parameter, but is calculated using 1000 Bytes as the conversion unit instead of 1024 Bytes;
-I or--inodes display the information of the inode;
-K or--kilobytes specifies a block size of 1024 bytes;
-L or--local only displays the file system on the local side;
-M or--megabytes specifies a block size of 1048576 bytes;
For example, use Df–h to view details of the current system's capacity and used space, free space, and so on.
mas@[/mas/libsrc]$ df-h
F
virtual CPU to serve another virtual process.%IDLE:CPU idle time percentage.1. If the%iowait value is too high, it indicates that the hard disk has an I/O bottleneck2. If the value of the%idle is high but the system responds slowly, it is possible that the CPU waits for the allocated memory, at which time the memory capacity should be increased3. If the value of%idle is consistently below 1, the system's CPU processing power is relatively low, indicating that the most needed solution in the sys
B indicates byte, that is, byte. one byte = eight bits, that is, 1B = 8B; the upper-case k indicates the meaning of a thousand, that is, a thousand bits (Kb) or a thousand bits (KB ). Indicates the size unit of the file. Generally, bytes (Kb) are used to indicate the file size. Kbps: First, you need to know that PS refers to/s, that is, every second. Kbps indicates the network speed, that is, the number of kilobytes of information transmitted per sec
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