性能优势 - 多个PowerShells与后台作业

Question

我制作了一个同时启动多个后台作业的程序.目前,该过程需要几个小时(有时3小时,有时长达6小时,具体取决于文件和大小).

重写代码是否有任何优势,因此它不会使用Background-Jobs启动同一Shell中的所有进程,而是为每个单独的进程启动PowerShell？或者两者之间没有什么大不同？

$handler_button1_Click= 
{
    if ($checkBox1.Checked)    { 
    Try{
    $job1 = start-jobhere {& C:\Users\mosermich\Desktop\Extractor\Ressources\adp_staging.bat} -Name "ADP-DATA"
    $listBox1.Items.Add("ADP-staging läuft...")
    }catch [System.Exception]{}
    }

    if ($checkBox2.Checked)    { 
    Try{ 
    $job2 = start-jobhere {& C:\Users\mosermich\Desktop\Extractor\Ressources\kdp_staging.bat} -Name "KDP-DATA"
    $listBox1.Items.Add("KDP-staging läuft...")
    }catch [System.Exception]{}
    }

    if ($checkBox3.Checked)    { 
    Try{ 
    $job3 = start-jobhere { & C:\Users\mosermich\Desktop\Extractor\Ressources\mdp_staging.bat} -Name "MDP-DATA"
    $listBox1.Items.Add("MDP-staging läuft...")
    }catch [System.Exception]{}
    }

    if ($checkBox4.Checked)    { 
    Try{ 
    $job4 = start-jobhere { & C:\Users\mosermich\Desktop\Extractor\Ressources\zdlb_staging.bat} -Name "ZDL-B-DATA"
    $listBox1.Items.Add("ZDLB-staging läuft...")
    }catch [System.Exception]{}
    }

    if ($checkBox5.Checked)    { 
    Try{ 
    $job5 = start-jobhere { & C:\Users\mosermich\Desktop\Extractor\Ressources\zdls_staging.bat} -Name "ZDL-S-DATA"
    $listBox1.Items.Add("ZDLS-staging läuft...")
    }catch [System.Exception]{}
    }

    if ($checkBox6.Checked)    { 
    Try{ 
    $job6 = start-jobhere { & C:\Users\mosermich\Desktop\Extractor\Ressources\zub_staging.bat} -Name "ZUBOFI-DATA"
    $listBox1.Items.Add("ZUBOFI-staging läuft...")
    }catch [System.Exception]{}
    }

    if ($checkBox7.Checked)    { 
    Try{ 
    $job7 = start-jobhere { & C:\Users\mosermich\Desktop\Extractor\Ressources\adp_staging_error.bat} -Name "ADP-ERR"
    $listBox1.Items.Add("ADP-Error-staging läuft...")
    }catch [System.Exception]{}
    }

    if ($checkBox8.Checked)    { 
    Try{  
    $job8 = start-jobhere { & C:\Users\mosermich\Desktop\Extractor\Ressources\kdp_staging_error.bat} -Name "KDP-ERR"
    $listBox1.Items.Add("KDP-Error-staging läuft...")
    }catch [System.Exception]{}
    }

    if ($checkBox9.Checked)    { 
    Try{  
    $job9 = start-jobhere { & C:\Users\mosermich\Desktop\Extractor\Ressources\mdp_staging_error.bat} -Name "MDP-ERR"
    $listBox1.Items.Add("MDP-Error-staging läuft...")
    }catch [System.Exception]{}
    }

    if ($checkBox10.Checked)    { 
    Try{  
    $job10 = start-jobhere { & C:\Users\mosermich\Desktop\Extractor\Ressources\zdlb_staging_error.bat} -Name "ZDL-B-ERR"
    $listBox1.Items.Add("ZDL-B-Error-staging läuft...")
    }catch [System.Exception]{}
    }

    if ($checkBox11.Checked)    { 
    Try{  
    $job11 = start-jobhere { & C:\Users\mosermich\Desktop\Extractor\Ressources\zdls_staging_error.bat} -Name "ZDL-S-ERR"
    $listBox1.Items.Add("ZDL-S-Error-staging läuft...")
    }catch [System.Exception]{}
    }

    if ($checkBox12.Checked)    { 
    Try{  
    $job12 = start-jobhere { & C:\Users\mosermich\Desktop\Extractor\Ressources\zub_staging_error.bat} -Name "ZUBOFI-ERR"
    $listBox1.Items.Add("ZUBOFI-Error-staging läuft...")
    }catch [System.Exception]{}
    }

    if ($listBox1.Items.Count -eq 0) {
    $listBox1.Items.Add("No-Data!") 
    }

    Get-Job | Wait-Job | Where State -eq "Running"


    $listBox1.Items.Add("All Jobs have been succesfully finished")

    }else{}

Answer 1

(我猜)你不会看到产生后台作业Start-Job或调用comdlet与-AsJob实际创建PowerShell可执行文件的新实例之间的巨大差异- 你可以看到任务管理器/进程资源管理器等.

如果同时创建大量后台作业,那么与实际工作负载相比,创建和调度这些作业可能会产生相当大的开销.在这种情况下,您可能需要查看更轻量级的PowerShell运行空间.特别是你可以看看优秀的PoshRSJob模块,这使得使用运行空间看起来就像使用'常规'PowerShell作业一样.它还包括排队任务的功能,这样您就不会同时执行1000个任务,但在任何给定时间只执行8个任务.