Date: Fri, 15 Sep 2017 19:49:14 +0000 From: bugzilla-noreply@freebsd.org To: gecko@FreeBSD.org Subject: [Bug 222356] www/firefox: file-backed shared memory performance Message-ID: <bug-222356-21738-DLLtMTjDfB@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-222356-21738@https.bugs.freebsd.org/bugzilla/> References: <bug-222356-21738@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D222356 --- Comment #1 from Konstantin Belousov <kib@FreeBSD.org> --- Could it be that msync(2) is called over that mappings ? Try this diff --git a/sys/vm/vm_object.c b/sys/vm/vm_object.c index fa197214296..33e7e6f8643 100644 --- a/sys/vm/vm_object.c +++ b/sys/vm/vm_object.c @@ -1083,8 +1068,8 @@ vm_object_sync(vm_object_t object, vm_ooffset_t offse= t, vm_size_t size, * I/O. */ if (object->type =3D=3D OBJT_VNODE && - (object->flags & OBJ_MIGHTBEDIRTY) !=3D 0) { - vp =3D object->handle; + (object->flags & OBJ_MIGHTBEDIRTY) !=3D 0 && + ((vp =3D object->handle)->v_vflag & VV_NOSYNC) =3D=3D 0) { VM_OBJECT_WUNLOCK(object); (void) vn_start_write(vp, &mp, V_WAIT); vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); --=20 You are receiving this mail because: You are the assignee for the bug.=
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