O que significa “Leitura / Gravação de E / S” e “Bytes de Leitura / Gravação de E / S” significa?

Question

No Gerenciador de Tarefas (e no Process Explorer da Sysinternals), há colunas chamadas "Leituras de E / S", "Gravações de E / S", "Bytes de Leitura de E / S" e "Bytes de Gravação de E / S". Então, o que esses contadores significam exatamente? O que mais, além da atividade de disco e rede, incluem?

No Process Explorer, vejo vários processos que possuem zero "Bytes de Leitura de Disco" e "Bytes de Recebimento de Rede", mas "Bytes de Leitura de E / S" diferentes de zero. E, inversamente, alguns processos possuem um valor "Disk Read Bytes" maior que "Bytes de leitura de E / S". Como isso é possível?

    

Answer 1

Como é possível que eu tenha um processo com 4 MiB "Bytes de Leitura de E / S" e zero "Bytes de Leitura de Disco"?

Os bytes de leitura de E / S são mais do que apenas Bytes de leitura de disco:

• Inclui E / S de arquivo, rede e dispositivo
• Ele não inclui o I / O do console

I/O Read Bytes - The number of bytes read in input/output operations generated by a process, including file, network, and device I/Os. I/O Read Bytes directed to CONSOLE (console input object) handles are not counted.

O que significam os dados de I / O?

I/O Columns of Process Explorer

• I/O Delta - The change in I/O operations since the last measurement

• I/O Delta Bytes - The change in I/O bytes since the last measurement.

• I/O Other - The number of input/output operations generated by a process that are neither reads nor writes, including file, network, and device I/Os. An example of this type of operation would be a control function. I/O Others directed to CONSOLE (console input object) handles are not counted.

• I/O Other Bytes - The number of bytes transferred in input/output operations generated by a process that are neither reads nor writes, including file, network, and device I/Os. An example of this type of operation would be a control function. I/O Other Bytes directed to CONSOLE (console input object) handles are not counted.

• I/O Read Bytes - The number of bytes read in input/output operations generated by a process, including file, network, and device I/Os. I/O Read Bytes directed to CONSOLE (console input object) handles are not counted.

• I/O Reads - The number of read input/output operations generated by a process, including file, network, and device I/Os. I/O Reads directed to CONSOLE (console input object) handles are not counted.

• I/O Write Bytes - The number of bytes written in input/output operations generated by a process, including file, network, and device I/Os. I/O Write Bytes directed to CONSOLE (console input object) handles are not counted.

• I/O Writes - The number of write input/output operations generated by a process, including file, network, and device I/Os. I/O Writes directed to CONSOLE (console input object) handles are not counted.

Fonte Tentando entender os dados de E / S do Process Explorer