如何通过 UNC 加速 Powershell Get-Childitem [英] How to speed up Powershell Get-Childitem over UNC

问题描述

DIR 或 GCI 在 Powershell 中很慢，但在 CMD 中很快.有什么办法可以加快速度吗?

DIR or GCI is slow in Powershell, but fast in CMD. Is there any way to speed this up?

在 CMD.exe 中，在亚秒延迟后，这会以 CMD 窗口可以跟上的速度响应

In CMD.exe, after a sub-second delay, this responds as fast as the CMD window can keep up

dir \\remote-server.domain.com\share\folder\file*.*

在 Powershell (v2) 中，经过 40 秒以上的延迟后，响应速度明显变慢(可能每秒 3-4 行)

In Powershell (v2), after a 40+ second delay, this responds with a noticable slowness (maybe 3-4 lines per second)

gci \\remote-server.domain.com\share\folder\file*.*

我正在尝试扫描远程服务器上的日志，所以也许有更快的方法.

I'm trying to scan logs on a remote server, so maybe there's a faster approach.

get-childitem \\$s\logs -include $filemask -recurse | select-string -pattern $regex

推荐答案

这里 很好地解释了 Lee Holmes 对 Get-ChildItem 为什么慢的原因.如果您注意到页面底部Anon 11 Mar 2010 11:11 AM"的评论，他的解决方案可能适合您.

Here is a good explanation on why Get-ChildItem is slow by Lee Holmes. If you take note of the comment from "Anon 11 Mar 2010 11:11 AM" at the bottom of the page his solution might work for you.

Anon 的代码:

# SCOPE: SEARCH A DIRECTORY FOR FILES (W/WILDCARDS IF NECESSARY)
# Usage:
# $directory = "\\SERVER\SHARE"
# $searchterms = "filname[*].ext"
# PS> $Results = Search $directory $searchterms

[reflection.assembly]::loadwithpartialname("Microsoft.VisualBasic") | Out-Null

Function Search {
  # Parameters $Path and $SearchString
  param ([Parameter(Mandatory=$true, ValueFromPipeline = $true)][string]$Path,
  [Parameter(Mandatory=$true)][string]$SearchString
  )
  try {
    #.NET FindInFiles Method to Look for file
    # BENEFITS : Possibly running as background job (haven't looked into it yet)

    [Microsoft.VisualBasic.FileIO.FileSystem]::GetFiles(
    $Path,
    [Microsoft.VisualBasic.FileIO.SearchOption]::SearchAllSubDirectories,
    $SearchString
    )
  } catch { $_ }

}

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