I think your admins are lying to you. The NFS block size is determined when you isssue mount to tie the NFS driver into your file system. Just by co-incidence the default block size is also 4k. The NFS block size determines when and how much data is requested from the server not the application's IO block size. See your systems mount manual page.

After doing just a tiny bit of reading and a little bit of testing on my system I'm convinced that modifying perl's block size would be a wasted effort. It would not change the size of the NFS requests to the server.

s//----->\t/;$~="JAPH";s//\r<$~~/;{s|~$~-|-~$~|||s |-$~~|$~~-|||s,<$~~,<~$~,,s,~$~>,$~~>,, $|=1,select$,,$,,$,,1e-1;print;redo}

In reply to Re^3: 4k read buffer is too small by starbolin
in thread 4k read buffer is too small by voeckler

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