MailScanner: mremap moved 280 cows

Matt Kettler mkettler at EVI-INC.COM
Thu Nov 4 16:40:48 GMT 2004

At 10:42 AM 11/4/2004, Quintin Giesbrecht wrote:
>I found this on my console screen this morning...
>Anyone know what it means?
>MailScanner: mremap moved 280 cows

cows: copy-on-write pages.  That message is a warning generated by the
2.6.x linux kernel, indicating it's having to do some rather non-optimal
behaviors to work around what mremap is doing. I believe 2.6.6 and higher
have this fixed with a better handling of CoW pages in mremap.c

Some related discussion:

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