diff options
Diffstat (limited to 'cddl/contrib/dtracetoolkit/FS/fsrw.d')
| -rwxr-xr-x | cddl/contrib/dtracetoolkit/FS/fsrw.d | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/cddl/contrib/dtracetoolkit/FS/fsrw.d b/cddl/contrib/dtracetoolkit/FS/fsrw.d deleted file mode 100755 index 291f09aa..0000000 --- a/cddl/contrib/dtracetoolkit/FS/fsrw.d +++ /dev/null @@ -1,149 +0,0 @@ -#!/usr/sbin/dtrace -s -/* - * fsrw.d - file system read/write event tracing. - * Written using DTrace (Solaris 10 3/05) - * - * This traces file related activity: system call reads and writes, - * vnode logical read and writes (fop), and disk I/O. It can be used - * to examine the behaviour of each I/O layer, from the syscall - * interface to what the disk is doing. Behaviour such as read-ahead, and - * max I/O size breakup can be observed. - * - * $Id: fsrw.d 3 2007-08-01 10:50:08Z brendan $ - * - * USAGE: fsrw.d - * - * FIELDS: - * Event Traced event (see EVENTS below) - * Device Device, for disk I/O - * RW Either Read or Write - * Size Size of I/O in bytes - * Offset Offset of I/O in kilobytes - * Path Path to file on disk - * - * EVENTS: - * sc-read System call read - * sc-write System call write - * fop_read Logical read - * fop_write Logical write - * disk_io Physical disk I/O - * disk_ra Physical disk I/O, read ahead - * - * The events are drawn with a level of indentation, which can sometimes - * help identify related events. - * - * SEE ALSO: fspaging.d - * - * IDEA: Richard McDougall, Solaris Internals 2nd Ed, FS Chapter. - * - * COPYRIGHT: Copyright (c) 2006 Brendan Gregg. - * - * CDDL HEADER START - * - * The contents of this file are subject to the terms of the - * Common Development and Distribution License, Version 1.0 only - * (the "License"). You may not use this file except in compliance - * with the License. - * - * You can obtain a copy of the license at Docs/cddl1.txt - * or http://www.opensolaris.org/os/licensing. - * See the License for the specific language governing permissions - * and limitations under the License. - * - * CDDL HEADER END - * - * ToDo: readv() - * - * 20-Mar-2006 Brendan Gregg Created this. - * 23-Apr-2006 " " Last update. - */ - -#pragma D option quiet -#pragma D option switchrate=10hz - -dtrace:::BEGIN -{ - printf("%-12s %10s %2s %8s %6s %s\n", - "Event", "Device", "RW", "Size", "Offset", "Path"); -} - -syscall::*read:entry, -syscall::*write*:entry -{ - /* - * starting with a file descriptior, dig out useful info - * from the corresponding file_t and vnode_t. - */ - this->filistp = curthread->t_procp->p_user.u_finfo.fi_list; - this->ufentryp = (uf_entry_t *)((uint64_t)this->filistp + - (uint64_t)arg0 * (uint64_t)sizeof (uf_entry_t)); - this->filep = this->ufentryp->uf_file; - self->offset = this->filep->f_offset; - this->vnodep = this->filep != 0 ? this->filep->f_vnode : 0; - self->vpath = this->vnodep ? (this->vnodep->v_path != 0 ? - cleanpath(this->vnodep->v_path) : "<unknown>") : "<unknown>"; - - /* only trace activity to regular files and directories, as */ - self->sc_trace = this->vnodep ? this->vnodep->v_type == VREG || - this->vnodep->v_type == VDIR ? 1 : 0 : 0; -} - -syscall::*read:entry -/self->sc_trace/ -{ - printf("sc-%-9s %10s %2s %8d %6d %s\n", probefunc, ".", "R", - (int)arg2, self->offset / 1024, self->vpath); -} - -syscall::*write*:entry -/self->sc_trace/ -{ - printf("sc-%-9s %10s %2s %8d %6d %s\n", probefunc, ".", "W", - (int)arg2, self->offset / 1024, self->vpath); -} - -syscall::*read:return, -syscall::*write*:return -{ - self->vpath = 0; - self->offset = 0; - self->sc_trace = 0; -} - -fbt::fop_read:entry, -fbt::fop_write:entry -/self->sc_trace && args[0]->v_path/ -{ - printf(" %-10s %10s %2s %8d %6d %s\n", probefunc, ".", - probefunc == "fop_read" ? "R" : "W", args[1]->uio_resid, - args[1]->_uio_offset._f / 1024, cleanpath(args[0]->v_path)); -} - -fbt:ufs:ufs_getpage_ra:entry -{ - /* fetch the real offset (file_t is unaware of this) */ - self->ra_offset = ((inode_t *)args[0]->v_data)->i_nextrio; - self->read_ahead = 1; -} - -fbt:ufs:ufs_getpage_ra:return -{ - self->read_ahead = 0; - self->ra_offset = 0; -} - -io::bdev_strategy:start -{ - this->offset = self->read_ahead ? self->ra_offset : args[2]->fi_offset; - printf(" %-8s %10s %2s %8d %6d %s\n", - self->read_ahead ? "disk_ra" : "disk_io", args[1]->dev_statname, - args[0]->b_flags & B_READ ? "R" : "W", args[0]->b_bcount, - this->offset / 1024, args[2]->fi_pathname); - /* - * it would seem to make sense to only trace disk events during - * an fop event, easily coded with a self->fop_trace flag. However - * writes are asynchronous to the fop_write calls (they are flushed - * at some later time), and so this approach will miss tracing - * most of the disk writes. - */ -} |
