Date: Sun, 9 Jan 2000 16:07:27 -0800 (PST) From: Kirk McKusick <mckusick@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern vfs_subr.c Message-ID: <200001100007.QAA36962@freefall.freebsd.org>
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mckusick 2000/01/09 16:07:26 PST
Modified files:
sys/kern vfs_subr.c
Log:
Remove the P_BUFEXHAUST flag from the syncer process (leaving
it only on the buf_daemon process). The problem is that when the
syncer process starts running the worklist, it wants to delete
lots of files. It does this by VFS_VGET'ing the vnodes, clearing
the blocks in them and bdwrite'ing the buffer. It can process close
to a thousand files per second which generates a large number of
dirty buffers. So, giving it special priviledge at the buffer trough
leads to trouble as the buf_daemon does occationally need a free
buffer to proceed and if the syncer has used every last one up,
we are toast.
Revision Changes Path
1.244 +1 -3 src/sys/kern/vfs_subr.c
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