packet file 中文意思是什麼
packet file
解釋
粗方銼-
Whenever you boot your system again, you can restore the rule set into the packet filtering tables from this script file using the
命令將規則集從該腳本文件恢復到信息包過濾表，如下所示： -
As the intermittent asynchronous transmission of the internet is based on packets, a realtime av source or an av file stored is broken down into many packets in the course of transmission. and as the network is dynamic, each packet may be routed differently, resulting in different delay at the user end. the packets transmitted first may arrive later
因為internet以包傳輸為基礎進行斷續的異步傳輸，對一個實時av源或存儲的av文件，在傳輸中它們要被分解為許多包，由於網路是動態變化的，各個包選擇的路由可能不盡相同，故到達客戶端的時間延遲也就不等，甚至先發的數據包還有可能後到。 -
Secondly, we implement a bpf model called mybpf on linux as a kernel module. it can collect packets within the netfilter frame, provide the applications with an interface in char device file manner and be attached to the nf _ ip _ pre _ routing hook defined by netfilter frame for ipv4 as a hook function. finally, we evaluate the performance between mybpf and other bpf on sock _ packet socket
該模塊以字元設備文件的形式為應用程序提供介面，並在netfilter框架為ipv4定義的nf _ ip _ pre _ routing鉤子上掛接了一個鉤子函數，該鉤子函數實現bpf虛擬機，完成對數據包的捕獲；最後，本文對mybpf模塊作了相應的測試並與在sock _ packet套介面上實現的bpf做了性能比較。 -
Make clear the procedure of sending and receiving packet of kernel and the implementation of traffic control. the special mechanism in linux such as wait queue, task queue, time interrupt is also explained. after analyzing the file system of linux at large, we bring forward the design of modifying of file system. since many little file is created during the service of email and file service, we introduce the non volatile random access ram, by modifying the arithmetic of file system, changing the data flow of file system
本文詳細介紹了針對網路專用服務器的專用linux系統的設計，對linux文件系統進行了詳盡的解析，包括vfs的實現， buffercache的作用等；並對塊設備驅動程序在內核中各個介面進行了分析；解析了內核接收和發送數據包的全過程以及流量控制在內核中的全過程；並對linux系統的一些特殊的機制如等待隊列，任務隊列，時鐘中斷等進行了詳細的解釋。 -
Now all rules in the packet filtering tables are saved in the file iptables - script
現在，信息包過濾表中的所有規則都被保存在文件iptables - script中。 -
You can also save packet buffers to file for later study
還可以將分組緩沖保存至文件，以便在以後研究。 -
So if you have an error - free and efficient set of rules added to the packet filtering tables, to use the rules again after a reboot, you have to save the rule set in a file
所以，如果您將沒有錯誤的且有效的規則集添加到信息包過濾表，同時希望在重新引導之後再次使用這些規則，那麼必須將該規則集保存在文件中。 -
I suggest modifying the format of a log file to include a column on recording significant interruption thresholds automatically calculated every time packet losses occur and another column to alert the administrators of impending problems of impacting uptime availability guarantees in a sla
我建議修改日誌文件的格式，用一列來自動記錄每次包丟失時自動計算得到的明顯的中斷閥值，另一列記錄一些影響到sla的正常運行時間可用性保證的緊急問題，以此提醒管理員。
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