File: system-resources.html

package info (click to toggle)
sysadmin-guide 0.9-1
  • links: PTS
  • area: main
  • in suites: jessie, jessie-kfreebsd, lenny, squeeze, wheezy
  • size: 944 kB
  • ctags: 1
  • sloc: makefile: 5
file content (648 lines) | stat: -rw-r--r-- 16,583 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML
><HEAD
><TITLE
>System Resources</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
REL="HOME"
TITLE="Linux System Administrators Guide"
HREF="index.html"><LINK
REL="UP"
TITLE="System Monitoring"
HREF="system-monitoring.html"><LINK
REL="PREVIOUS"
TITLE="System Monitoring"
HREF="system-monitoring.html"><LINK
REL="NEXT"
TITLE="Filesystem Usage"
HREF="fs-usage.html"></HEAD
><BODY
CLASS="SECT1"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>Linux System Administrators Guide: </TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="system-monitoring.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
>Chapter 7. System Monitoring</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="fs-usage.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="SYSTEM-RESOURCES"
></A
>7.1. System Resources</H1
><P
>Being able to monitor the performance of your system
        is essential.  If system resources become to low it can cause a lot of
	problems.  System resources can be taken up by individual users, or by
	services your system may host such as email or web pages.  The ability to
	know what is happening can help determine whether system upgrades are needed, 
	or if some services need to be moved to another machine.</P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="TOP"
></A
>7.1.1. The <B
CLASS="COMMAND"
>top</B
> command.</H2
><P
>The most common of these commands is <B
CLASS="COMMAND"
>top</B
>.
	The <B
CLASS="COMMAND"
>top</B
> will display a continually updating report
	of system resource usage.

<TABLE
BORDER="1"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="SCREEN"
><TT
CLASS="PROMPT"
>#</TT
> <TT
CLASS="USERINPUT"
><B
>top</B
></TT
>
<TT
CLASS="COMPUTEROUTPUT"
> 12:10:49  up 1 day,  3:47,  7 users,  load average: 0.23, 0.19, 0.10
125 processes: 105 sleeping, 2 running, 18 zombie, 0 stopped
CPU states:   5.1% user   1.1% system   0.0% nice   0.0% iowait  93.6% idle
Mem:   512716k av,  506176k used,    6540k free,       0k shrd,   21888k buff
Swap: 1044216k av,  161672k used,  882544k free                  199388k cached

  PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME CPU COMMAND
 2330 root      15   0  161M  70M  2132 S     4.9 14.0  1000m   0 X
 2605 weeksa    15   0  8240 6340  3804 S     0.3  1.2   1:12   0 kdeinit
 3413 weeksa    15   0  6668 5324  3216 R     0.3  1.0   0:20   0 kdeinit
18734 root      15   0  1192 1192   868 R     0.3  0.2   0:00   0 top
 1619 root      15   0   776  608   504 S     0.1  0.1   0:53   0 dhclient
    1 root      15   0   480  448   424 S     0.0  0.0   0:03   0 init
    2 root      15   0     0    0     0 SW    0.0  0.0   0:00   0 keventd
    3 root      15   0     0    0     0 SW    0.0  0.0   0:00   0 kapmd
    4 root      35  19     0    0     0 SWN   0.0  0.0   0:00   0 ksoftirqd_CPU0
    9 root      25   0     0    0     0 SW    0.0  0.0   0:00   0 bdflush
    5 root      15   0     0    0     0 SW    0.0  0.0   0:00   0 kswapd
   10 root      15   0     0    0     0 SW    0.0  0.0   0:00   0 kupdated
   11 root      25   0     0    0     0 SW    0.0  0.0   0:00   0 mdrecoveryd
   15 root      15   0     0    0     0 SW    0.0  0.0   0:01   0 kjournald
   81 root      25   0     0    0     0 SW    0.0  0.0   0:00   0 khubd
 1188 root      15   0     0    0     0 SW    0.0  0.0   0:00   0 kjournald
 1675 root      15   0   604  572   520 S     0.0  0.1   0:00   0 syslogd
 1679 root      15   0   428  376   372 S     0.0  0.0   0:00   0 klogd
 1707 rpc       15   0   516  440   436 S     0.0  0.0   0:00   0 portmap
 1776 root      25   0   476  428   424 S     0.0  0.0   0:00   0 apmd
 1813 root      25   0   752  528   524 S     0.0  0.1   0:00   0 sshd
 1828 root      25   0   704  548   544 S     0.0  0.1   0:00   0 xinetd
 1847 ntp       15   0  2396 2396  2160 S     0.0  0.4   0:00   0 ntpd
 1930 root      24   0    76    4     0 S     0.0  0.0   0:00   0 rpc.rquotad</TT
></PRE
></FONT
></TD
></TR
></TABLE
></P
><P
>The top portion of the report lists information such as
	the system time, uptime, CPU usage, physical ans swap memory usage,
	and number of processes.  Below that is a list of the processes sorted
	by CPU utilization.</P
><P
>You can modify the output of <B
CLASS="COMMAND"
>top</B
> while 
	is is running.  If you hit an <TT
CLASS="OPTION"
>i</TT
>, top will no longer
	display idle processes.  Hit <TT
CLASS="OPTION"
>i</TT
> again to see them
	again.  Hitting <TT
CLASS="OPTION"
>M</TT
> will sort by memory usage, 
	<TT
CLASS="OPTION"
>S</TT
> will sort by how long they processes have been 
	running, and <TT
CLASS="OPTION"
>P</TT
> will sort by CPU usage again.</P
><P
>In addition to viewing options, you can also modify processes
	from within the <B
CLASS="COMMAND"
>top</B
> command.  You can use 
	<TT
CLASS="OPTION"
>u</TT
> to view processes owned by a specific user, 
	<TT
CLASS="OPTION"
>k</TT
> to kill processes, and <TT
CLASS="OPTION"
>r</TT
> to 
	renice them.</P
><P
>For more in-depth information about processes you can look in
	the <TT
CLASS="FILENAME"
>/proc</TT
> filesystem.  In the <TT
CLASS="FILENAME"
>/proc</TT
>
	filesystem you will find a series of sub-directories with numeric names.
	These directories are associated with the processes ids of currently 
	running processes.  In each directory you will find a series of files 
	containing information about the process.</P
><P
>YOU MUST TAKE EXTREME CAUTION TO NOT MODIFY THESE FILES, DOING 
	SO MAY CAUSE SYSTEM PROBLEMS!</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="IOSTAT"
></A
>7.1.2. The <B
CLASS="COMMAND"
>iostat</B
> command.</H2
><P
>The <B
CLASS="COMMAND"
>iostat</B
> will display the current CPU load
	average and disk I/O information.  This is a great command to monitor 
	your disk I/O usage.

<TABLE
BORDER="1"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="SCREEN"
><TT
CLASS="PROMPT"
>#</TT
> <TT
CLASS="USERINPUT"
><B
>iostat</B
></TT
>
<TT
CLASS="COMPUTEROUTPUT"
>Linux 2.4.20-24.9 (myhost)       12/23/2003

avg-cpu:  %user   %nice    %sys   %idle
          62.09    0.32    2.97   34.62

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
dev3-0            2.22        15.20        47.16    1546846    4799520</TT
></PRE
></FONT
></TD
></TR
></TABLE
>

	For 2.4 kernels the devices is names using the device's major
	and minor number.  In this case the device listed is <TT
CLASS="FILENAME"
>	/dev/hda</TT
>.  To have <B
CLASS="COMMAND"
>iostat</B
> print this
	out for you, use the <TT
CLASS="OPTION"
>-x</TT
>.
<TABLE
BORDER="1"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="SCREEN"
><TT
CLASS="PROMPT"
>#</TT
> <TT
CLASS="USERINPUT"
><B
>iostat -x</B
></TT
>
<TT
CLASS="COMPUTEROUTPUT"
>Linux 2.4.20-24.9 (myhost)       12/23/2003

avg-cpu:  %user   %nice    %sys   %idle
          62.01    0.32    2.97   34.71

Device:  rrqm/s wrqm/s r/s  w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util
/dev/hdc   0.00   0.00 .00 0.00   0.00   0.00  0.00  0.00     0.00     2.35  0.00  0.00 14.71
/dev/hda   1.13   4.50 .81 1.39  15.18  47.14  7.59 23.57    28.24     1.99 63.76 70.48 15.56
/dev/hda1  1.08   3.98 .73 1.27  14.49  42.05  7.25 21.02    28.22     0.44 21.82  4.97  1.00
/dev/hda2  0.00   0.51 .07 0.12   0.55   5.07  0.27  2.54    30.35     0.97 52.67 61.73  2.99
/dev/hda3  0.05   0.01 .02 0.00   0.14   0.02  0.07  0.01     8.51     0.00 12.55  2.95  0.01</TT
></PRE
></FONT
></TD
></TR
></TABLE
>
	</P
><P
>The <B
CLASS="COMMAND"
>iostat</B
> man page contains a detailed 
	explanation of what each of these columns mean.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="PS"
></A
>7.1.3. The <B
CLASS="COMMAND"
>ps</B
> command</H2
><P
>The <B
CLASS="COMMAND"
>ps</B
> will provide you a list of
	processes currently running.  There is a wide variety of options 
	that this command gives you.</P
><P
>A common use would be to list all processes currently running.
	To do this you would use the <B
CLASS="COMMAND"
>ps -ef</B
> command. 
	(Screen output from this command is too large to include, the following
	is only a partial output.)

<TABLE
BORDER="1"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="SCREEN"
>UID        PID  PPID  C STIME TTY          TIME CMD
root         1     0  0 Dec22 ?        00:00:03 init
root         2     1  0 Dec22 ?        00:00:00 [keventd]
root         3     1  0 Dec22 ?        00:00:00 [kapmd]
root         4     1  0 Dec22 ?        00:00:00 [ksoftirqd_CPU0]
root         9     1  0 Dec22 ?        00:00:00 [bdflush]
root         5     1  0 Dec22 ?        00:00:00 [kswapd]
root         6     1  0 Dec22 ?        00:00:00 [kscand/DMA]
root         7     1  0 Dec22 ?        00:01:28 [kscand/Normal]
root         8     1  0 Dec22 ?        00:00:00 [kscand/HighMem]
root        10     1  0 Dec22 ?        00:00:00 [kupdated]
root        11     1  0 Dec22 ?        00:00:00 [mdrecoveryd]
root        15     1  0 Dec22 ?        00:00:01 [kjournald]
root        81     1  0 Dec22 ?        00:00:00 [khubd]
root      1188     1  0 Dec22 ?        00:00:00 [kjournald]
root      1675     1  0 Dec22 ?        00:00:00 syslogd -m 0
root      1679     1  0 Dec22 ?        00:00:00 klogd -x
rpc       1707     1  0 Dec22 ?        00:00:00 portmap
root      1813     1  0 Dec22 ?        00:00:00 /usr/sbin/sshd
ntp       1847     1  0 Dec22 ?        00:00:00 ntpd -U ntp
root      1930     1  0 Dec22 ?        00:00:00 rpc.rquotad
root      1934     1  0 Dec22 ?        00:00:00 [nfsd]
root      1942     1  0 Dec22 ?        00:00:00 [lockd]
root      1943     1  0 Dec22 ?        00:00:00 [rpciod]
root      1949     1  0 Dec22 ?        00:00:00 rpc.mountd
root      1961     1  0 Dec22 ?        00:00:00 /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf
root      2057     1  0 Dec22 ?        00:00:00 /usr/bin/spamd -d -c -a
root      2066     1  0 Dec22 ?        00:00:00 gpm -t ps/2 -m /dev/psaux
bin       2076     1  0 Dec22 ?        00:00:00 /usr/sbin/cannaserver -syslog -u bin
root      2087     1  0 Dec22 ?        00:00:00 crond
daemon    2195     1  0 Dec22 ?        00:00:00 /usr/sbin/atd
root      2215     1  0 Dec22 ?        00:00:11 /usr/sbin/rcd
weeksa    3414  3413  0 Dec22 pts/1    00:00:00 /bin/bash
weeksa    4342  3413  0 Dec22 pts/2    00:00:00 /bin/bash
weeksa   19121 18668  0 12:58 pts/2    00:00:00 ps -ef</PRE
></FONT
></TD
></TR
></TABLE
></P
><P
>The first column shows who owns the process.  The second
	column is the process ID.  The Third column is the parent process
	ID.  This is the process that generated, or started, the process. 
	The forth column is the CPU usage (in
	percent). The fifth column is the start time, of date if the process 
	has been running long enough. The sixth column is the tty associated 
	with the process, if applicable. The seventh column is the cumulitive 
	CPU usage (total amount of CPU time is has used while running). The
	eighth column is the command itself.</P
><P
>With this information you can see exacly what is running on 
	your system and kill run-away processes, or those that are causing 
	problems.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="VMSTAT"
></A
>7.1.4. The <B
CLASS="COMMAND"
>vmstat</B
> command</H2
><P
>The <B
CLASS="COMMAND"
>vmstat</B
> command  will provide a report 
	showing statistics for system processes, memory, swap, 
	I/O, and the CPU.  These statistics are generated using data from the 
	last time the command was run to the present.  In the case of the 
	command never being run, the data will be from the last reboot until 
	the present.</P
><P
>&#13;<TABLE
BORDER="1"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="SCREEN"
><TT
CLASS="PROMPT"
>#</TT
> <TT
CLASS="USERINPUT"
><B
>vmstat</B
></TT
>
<TT
CLASS="COMPUTEROUTPUT"
>   procs                      memory      swap          io     system      cpu
 r  b  w   swpd   free   buff  cache   si   so    bi    bo   in    cs us sy id
 0  0  0 181604  17000  26296 201120    0    2     8    24  149     9 61  3 36</TT
></PRE
></FONT
></TD
></TR
></TABLE
></P
><P
>The following was taken from the 
	<B
CLASS="COMMAND"
>vmstat</B
> man page.</P
><A
NAME="AEN3528"
></A
><BLOCKQUOTE
CLASS="BLOCKQUOTE"
><P
><P
CLASS="LITERALLAYOUT"
>FIELD&nbsp;DESCRIPTIONS<br>
Procs<br>
&nbsp;&nbsp;&nbsp;&nbsp;r:&nbsp;The&nbsp;number&nbsp;of&nbsp;processes&nbsp;waiting&nbsp;for&nbsp;run&nbsp;time.<br>
&nbsp;&nbsp;&nbsp;&nbsp;b:&nbsp;The&nbsp;number&nbsp;of&nbsp;processes&nbsp;in&nbsp;uninterruptable&nbsp;sleep.<br>
&nbsp;&nbsp;&nbsp;&nbsp;w:&nbsp;The&nbsp;number&nbsp;of&nbsp;processes&nbsp;swapped&nbsp;out&nbsp;but&nbsp;otherwise&nbsp;runnable.&nbsp;&nbsp;This<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;field&nbsp;is&nbsp;calculated,&nbsp;but&nbsp;Linux&nbsp;never&nbsp;desperation&nbsp;swaps.<br>
<br>
Memory<br>
&nbsp;&nbsp;&nbsp;&nbsp;swpd:&nbsp;the&nbsp;amount&nbsp;of&nbsp;virtual&nbsp;memory&nbsp;used&nbsp;(kB).<br>
&nbsp;&nbsp;&nbsp;&nbsp;free:&nbsp;the&nbsp;amount&nbsp;of&nbsp;idle&nbsp;memory&nbsp;(kB).<br>
&nbsp;&nbsp;&nbsp;&nbsp;buff:&nbsp;the&nbsp;amount&nbsp;of&nbsp;memory&nbsp;used&nbsp;as&nbsp;buffers&nbsp;(kB).<br>
<br>
Swap<br>
&nbsp;&nbsp;&nbsp;&nbsp;si:&nbsp;Amount&nbsp;of&nbsp;memory&nbsp;swapped&nbsp;in&nbsp;from&nbsp;disk&nbsp;(kB/s).<br>
&nbsp;&nbsp;&nbsp;&nbsp;so:&nbsp;Amount&nbsp;of&nbsp;memory&nbsp;swapped&nbsp;to&nbsp;disk&nbsp;(kB/s).<br>
<br>
IO<br>
&nbsp;&nbsp;&nbsp;&nbsp;bi:&nbsp;Blocks&nbsp;sent&nbsp;to&nbsp;a&nbsp;block&nbsp;device&nbsp;(blocks/s).<br>
&nbsp;&nbsp;&nbsp;&nbsp;bo:&nbsp;Blocks&nbsp;received&nbsp;from&nbsp;a&nbsp;block&nbsp;device&nbsp;(blocks/s).<br>
<br>
System<br>
&nbsp;&nbsp;&nbsp;&nbsp;in:&nbsp;The&nbsp;number&nbsp;of&nbsp;interrupts&nbsp;per&nbsp;second,&nbsp;including&nbsp;the&nbsp;clock.<br>
&nbsp;&nbsp;&nbsp;&nbsp;cs:&nbsp;The&nbsp;number&nbsp;of&nbsp;context&nbsp;switches&nbsp;per&nbsp;second.<br>
<br>
CPU<br>
&nbsp;&nbsp;&nbsp;&nbsp;These&nbsp;are&nbsp;percentages&nbsp;of&nbsp;total&nbsp;CPU&nbsp;time.<br>
&nbsp;&nbsp;&nbsp;&nbsp;us:&nbsp;user&nbsp;time<br>
&nbsp;&nbsp;&nbsp;&nbsp;sy:&nbsp;system&nbsp;time<br>
&nbsp;&nbsp;&nbsp;&nbsp;id:&nbsp;idle&nbsp;time</P
></P
></BLOCKQUOTE
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="LSOF"
></A
>7.1.5. The <B
CLASS="COMMAND"
>lsof</B
> command</H2
><P
>The <B
CLASS="COMMAND"
>lsof</B
> command will print out a list of
	every file that is in use.  Since Linux considers everythihng a file, 	
	this list can be very long. However, this command
	can be useful in diagnosing problems.  An example of this is if you wish
	to unmount a filesystem, but you are being told that it is in use.  You
	could use this command and <B
CLASS="COMMAND"
>grep</B
> for the name of the 
	filesystem to see who is using it.</P
><P
>Or suppose you want to see all files in use by a particular process.
	To do this you would use <B
CLASS="COMMAND"
>lsof -p -processid-</B
>.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="MORE-UTILS"
></A
>7.1.6. Finding More Utilities</H2
><P
>To learn more about what command line tools are available, Chris 
	Karakas has wrote a reference guide titled <A
HREF="http://www.karakas-online.de/gnu-linux-tools-summary/"
TARGET="_top"
> GNU/Linux 
	Command-Line Tools Summary</A
>.  It's a good resource for learning
	what tools are out there and how to do a number of tasks.</P
></DIV
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="system-monitoring.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="fs-usage.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>System Monitoring</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="system-monitoring.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Filesystem Usage</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>