On Thu, 10 Jan 2008 07:33:03 +0200, Kostik Belousov <[EMAIL PROTECTED]> wrote: > > > For the SU-imposed jerkiness, try the patch below. Progress on developing > the change stalled somehow, and I would like to process with it. > > diff --git a/sys/kern/vfs_mount.c b/sys/kern/vfs_mount.c > index 248ce22..005f915 100644 > --- a/sys/kern/vfs_mount.c > +++ b/sys/kern/vfs_mount.c > @@ -2001,6 +2001,12 @@ __mnt_vnode_next(struct vnode **mvp, struct mount *mp) > mtx_assert(MNT_MTX(mp), MA_OWNED); > > KASSERT((*mvp)->v_mount == mp, ("marker vnode mount list mismatch")); > + if ((*mvp)->v_yield++ == 500) { > + MNT_IUNLOCK(mp); > + (*mvp)->v_yield = 0; > + uio_yield(); > + MNT_ILOCK(mp); > + } > vp = TAILQ_NEXT(*mvp, v_nmntvnodes); > while (vp != NULL && vp->v_type == VMARKER) > vp = TAILQ_NEXT(vp, v_nmntvnodes); > diff --git a/sys/sys/vnode.h b/sys/sys/vnode.h > index 0525a43..1ac289a 100644 > --- a/sys/sys/vnode.h > +++ b/sys/sys/vnode.h > @@ -131,6 +131,7 @@ struct vnode { > struct socket *vu_socket; /* v unix domain net (VSOCK) */ > struct cdev *vu_cdev; /* v device (VCHR, VBLK) */ > struct fifoinfo *vu_fifoinfo; /* v fifo (VFIFO) */ > + int vu_yield; /* yield count (VMARKER) */ > } v_un; > > /* > @@ -185,6 +186,7 @@ struct vnode { > #define v_socket v_un.vu_socket > #define v_rdev v_un.vu_cdev > #define v_fifoinfo v_un.vu_fifoinfo > +#define v_yield v_un.vu_yield > > /* XXX: These are temporary to avoid a source sweep at this time */ > #define v_object v_bufobj.bo_object > diff --git a/sys/ufs/ffs/ffs_softdep.c b/sys/ufs/ffs/ffs_softdep.c > index a221b66..02cf45b 100644 > --- a/sys/ufs/ffs/ffs_softdep.c > +++ b/sys/ufs/ffs/ffs_softdep.c > @@ -864,6 +864,7 @@ softdep_process_worklist(mp, full) > */ > if (loopcount++ % 128 == 0) { > FREE_LOCK(&lk); > + uio_yield(); > bwillwrite(); > ACQUIRE_LOCK(&lk); > }
Applied this patch. No change when deleting 1Gb files - the system still freezes briefly during the deallocation. -jr
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