[Bug 244713] Processes hanging in "nfs" state

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=244713

--- Comment #11 from Konstantin Belousov <kib at FreeBSD.org> ---
(In reply to Julien Cigar from comment #10)
If you just increase parallelism but do the sendfile over the same file, I
doubt that the issue is easier to reproduce, quite contrary.  Problem appears
when some pages in the file cache are reclaimed, and then sendfile(2) is called
over the region that contains holes in the cache.  So I would suggest to not
overreact with the parallelism from your app, instead some modest memory
pressure might be more useful.

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