S.M.A.R.T. and Fedora
Pedro Fernandes Macedo
webmaster at margo.bijoux.nom.br
Sat Mar 6 04:40:50 UTC 2004
Pedro Fernandes Macedo wrote:
> As I already have been saved by smart , I use smartd even if it
> decreases performance. Later I'm gonna reboot on FC1 to update it and
> I'm gonna run some hdparm tests and some copy tests..
> I'll let you guys know the results as soon as I have them...
>
> --
> Pedro Macedo
I did some tests here , both under FC 1 and FC2. My motherboard (Asus
A7N8X-Deluxe) doesnt have the option to disable SMART , so I only could
test disabling smartd... As expected , the difference between the
results isn't impressive... To test , I copied a 422mb iso file from a
vfat partition on hdc to a ext3 partition on hdb and also copied a 339Mb
folder with lots of small files from a vfat partition on hdc to a ext3
partition on hdb. The test script was simply:
hdparm -Tt /dev/hdb /dev/hdc
echo
echo Iso Copy
echo
time cp /mnt/void/cd1.iso /home/temp
echo
echo Directory Copy
echo
time cp -R /mnt/void/directory /home/temp
And the results...
FC1 kernel 2.4.22-1.2174.nptl
Smartd enabled:
[root at tirael root]# bash script
/dev/hdb:
Timing buffer-cache reads: 1272 MB in 2.00 seconds = 636.00 MB/sec
Timing buffered disk reads: 122 MB in 3.02 seconds = 40.40 MB/sec
/dev/hdc:
Timing buffer-cache reads: 1276 MB in 2.00 seconds = 638.00 MB/sec
Timing buffered disk reads: 124 MB in 3.00 seconds = 41.33 MB/sec
Iso Copy
real 0m18.909s
user 0m0.060s
sys 0m5.370s
Directory Copy
real 0m13.838s
user 0m0.060s
sys 0m3.370s
[root at tirael root]#
FC1 kernel 2.4.22-1.2174.nptl
Smartd disabled:
[root at tirael root]# bash script
/dev/hdb:
Timing buffer-cache reads: 1304 MB in 2.00 seconds = 652.00 MB/sec
Timing buffered disk reads: 122 MB in 3.01 seconds = 40.53 MB/sec
/dev/hdc:
Timing buffer-cache reads: 1304 MB in 2.00 seconds = 652.00 MB/sec
Timing buffered disk reads: 124 MB in 3.04 seconds = 40.79 MB/sec
Iso Copy
real 0m18.924s
user 0m0.080s
sys 0m4.330s
Directory Copy
real 0m13.964s
user 0m0.070s
sys 0m3.220s
[root at tirael root]#
Fedora Core 2 Test 1 kernel 2.6.3-2.1.238
Smartd disabled
[root at tirael root]# bash script
/dev/hdb:
Timing buffer-cache reads: 1188 MB in 2.00 seconds = 594.00 MB/sec
Timing buffered disk reads: 122 MB in 3.02 seconds = 40.40 MB/sec
/dev/hdc:
Timing buffer-cache reads: 1160 MB in 2.00 seconds = 580.00 MB/sec
Timing buffered disk reads: 120 MB in 3.02 seconds = 39.74 MB/sec
Iso Copy
real 0m20.549s
user 0m0.300s
sys 0m7.450s
Directory Copy
real 0m19.326s
user 0m0.280s
sys 0m6.390s
[root at tirael root]#
Fedora Core 2 Test 1 kernel 2.6.3-2.1.238
Smartd enabled
[root at tirael root]# bash script
/dev/hdb:
Timing buffer-cache reads: 1172 MB in 2.00 seconds = 586.00 MB/sec
Timing buffered disk reads: 120 MB in 3.02 seconds = 39.74 MB/sec
/dev/hdc:
Timing buffer-cache reads: 1156 MB in 2.00 seconds = 578.00 MB/sec
Timing buffered disk reads: 118 MB in 3.04 seconds = 38.82 MB/sec
Iso Copy
real 0m20.797s
user 0m0.270s
sys 0m7.780s
Directory Copy
real 0m19.590s
user 0m0.270s
sys 0m6.440s
[root at tirael root]#
--
Pedro Macedo
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