| View previous topic :: View next topic |
| Author |
Message |
heinzg
Tux's lil' helper
Joined: 10 Aug 2004
Posts: 96
Location: In the EU
|
 Posted: Wed Feb 22, 2006 10:57 pm Post subject: oddest performance problem.... 2005.1-r1 [SOLVED] |
 |
|
Hi there!
I have the oddest performance problem....
It started out that Samba performance was real poor & and still is( from windos all traffic to and from is slow, but from other system traffic speeds are normal)... But I started to look a bit deeper and found the system itself is not a responsive as it should be!
I have 2 simmilar file servers in the cellar. Both are Gentoo: but the one shages the bollox off of the other, and the slow one has far better hardware specs.
Why could this be ??
Anybody have any ideas on this?
I am at my end, I even pluged the 3ware card in other PCI slots to see if that would change this, it did not. Reinstalled nothing... it makes me sad, it does 
Just checked the BIOS settings everything that is not needed is off.
E.g I made a file 2.2GB big and did the following:
Just as a simples check on both systems.... and one is almost 2 time the speed of the other!!
| Code: | | # time dd if=./bigfile of=./bigfile2 bs=32k |
System 1:
| Quote: |
70384+0 records in
70384+0 records out
real 5m1.881s
user 0m0.012s
sys 0m7.240s
|
System2:
| Quote: |
70384+0 records in
70384+0 records out
real 2m44.821s
user 0m0.040s
sys 0m16.009s
|
Also if one is copying lost of files to both systems creating lost of IO and Load "System 1" becomes unresponsive or very slow, where System 2 is fast as normal.
E.g
During the "dd" test as above, if I do a "CTRL + C" after 30 sec or so, "System 1" needs about 5 to 8 sec to stop, where the "System 2" is less than 1 sec.
Samba crawls on "System 1" but flyes in "System 2" and i cant find anything in the logs
but did notice that in TOP the "CPU wa" value is always very high.
| Code: |
top - 23:38:39 up 5:26, 2 users, load average: 1.19, 0.29, 0.09
Tasks: 35 total, 2 running, 33 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0% us, 3.0% sy, 0.0% ni, 0.0% id, 97.0% wa, 0.0% hi, 0.0% si
Mem: 905592k total, 896348k used, 9244k free, 25024k buffers
Swap: 1092412k total, 192k used, 1092220k free, 839548k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
8536 root 18 0 1464 420 328 D 3.0 0.0 0:01.39 dd if ./bigfile of ./bigfile2 bs 32k
1 root 16 0 1464 516 452 S 0.0 0.1 0:00.14 init [3]
2 root 35 19 0 0 0 S 0.0 0.0 0:00.00 [ksoftirqd/0]
|
Both have a 1 raid5 disk configured 64k stripe and have the 3ware trick "blockdev --setra 16384 /dev/sda" on.
----------------------------------------------------------------------------------------------------
System 1 ( The Should Be Fast One - But Is Not):
HARDWARE:
AMD Athlon(tm) 64 Processor 3000+
Gigabyte K8VT800 Pro
1GB RAM
3ware 9500s RAID5
4x 200GB Samsung 200GB 7200rpm 8MB
SOFTWARE:
# cat /etc/gentoo-release
Gentoo Base System version 1.6.14
# uname -a
Linux gentoo32 2.6.15-gentoo-r1Y #3 Wed Feb 22 10:15:01 CET 2006 i686 AMD Athlon(tm) 64 Processor 3000+ AuthenticAMD GNU/Linux
Config file can be seen here --->>>> http://www.wosindwirhier.de/2.6.15-gentoo-r1Y.txt
dmes file for this box is here -->>>> http://www.wosindwirhier.de/dmes.txt
#ls -la /etc/make.profile
lrwxrwxrwx 1 root root 46 Feb 22 00:18 /etc/make.profile -> /usr/portage/profiles/default-linux/x86/2005.1
#cat /etc/make.conf
CFLAGS="-O2 -march=athlon-xp -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
CHOST="i686-pc-linux-gnu"
ARCH="x86"
ACCEPT_KEYWORDS="x86"
MAKEOPTS="-j2"
PORT_LOGDIR=/var/log/portage
PORTDIR=/usr/portage
DISTDIR=${PORTDIR}/distfiles
PKGDIR=${PORTDIR}/packages
PORTAGE_TMPDIR=/tmp/.portage
CCACHE_SIZE="2G"
AUTOCLEAN="yes"
SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage"
GENTOO_MIRRORS="ftp://ftp.uni-erlangen.de/pub/mirrors/gentoo/ http://ftp.uni-erlangen.de/pub/mirrors/gentoo/ ftp://ftp.belnet.be/mirror/rsync.gentoo.
org/gentoo/"
FEATURES="buildpkg fixpackages sandbox ccache"
#My use settings
USE="nptl nptlonly sse mmx 3dnow ccache nvidia -cups -ipv6"
# cat /etc/fstab
#Normal FileSystems
/dev/sda3 / reiserfs noatime 0 1
/dev/sda1 /boot ext2 noauto,noatime 0 2
/dev/sda4 /rep reiserfs noatime 0 3
----------------------------------------------------------------------------------------------------
System 2 ( Is Fast as Gentoo Should Be! ):
HARDWARE:
AMD Athlon(TM) XP 2000+
Asus A7V333
1GB RAM
3ware 7506 Series
4x Maxtor 160GB 7200rpm 2MB
SOFTWARE:
# cat /etc/gentoo-release
Gentoo Base System version 1.6.13
# uname -a
Linux tux32 2.6.13-gentoo-r3Y #3 Tue Feb 14 16:01:06 CET 2006 i686 AMD Athlon(TM) XP 2000+ AuthenticAMD GNU/Linux
Config file can be seen here --->>>> http://www.wosindwirhier.de/2.6.13-gentoo-r3Y.txt
#ls -la /etc/make.profile
lrwxrwxrwx 1 root root 48 Feb 5 22:13 /etc/make.profile -> ../usr/portage/profiles/default-linux/x86/2005.1
# cat /etc/make.conf
CFLAGS="-O2 -march=athlon-xp -pipe"
CXXFLAGS="${CFLAGS}"
CHOST="i686-pc-linux-gnu"
ARCH="x86"
ACCEPT_KEYWORDS="x86"
MAKEOPTS="-j2"
PORT_LOGDIR=/var/log/portage
PORTDIR=/usr/portage
DISTDIR=${PORTDIR}/distfiles
PKGDIR=${PORTDIR}/packages
PORTAGE_TMPDIR=/tmp/.TMP
CCACHE_SIZE="2G"
AUTOCLEAN="yes"
SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage"
GENTOO_MIRRORS="ftp://ftp.uni-erlangen.de/pub/mirrors/gentoo/ http://ftp.uni-erlangen.de/pub/mirrors/gentoo/ ftp://ftp.belnet.be/mirror/rsync.gentoo.org/gentoo/"
FEATURES="sandbox ccache buildpkg fixpackages sfperms"
#My use settings
USE="-gnome posix -kde sse mmx 3dnow java php gd gd-external nptl nptlonly apache2 ncurses samba ssl usb zlib crypt bzlib libclamav ldap crypt postgres mysql"
# cat /etc/fstab
#Normal FileSystems
/dev/sda2 / reiserfs noatime 0 2
#Special FileSystems
/dev/sda1 none swap sw 0 0
Last edited by heinzg on Fri Feb 24, 2006 4:33 pm; edited 1 time in total |
|
| Back to top |
|
 |
heinzg
Tux's lil' helper
Joined: 10 Aug 2004
Posts: 96
Location: In the EU
|
| Posted: Thu Feb 23, 2006 11:08 am Post subject: |
|
|
Hi
Has anybody got a tip for me were to look... It can't be that the box with superior hardware in all respects is half the speed of the other system.
Cheers
Heinzg |
|
| Back to top |
|
|
bollucks
l33t
Joined: 27 Oct 2004
Posts: 606
|
| Posted: Thu Feb 23, 2006 11:42 am Post subject: |
|
|
Do you take into account how much time is spent with your dd data in dirty ram being written out by pdflush after dd has returned? Make sure you do
time dd if=.... && sync
to make sure the sync writeout time is included in your benchmark.
However if you have high iowait times and poor performance under disk load that sounds like a badly performing device driver. You are on SATA and perhaps your driver config for that isn't ideal or is a dud driver. Check the dmesg output for info about the drivers. |
|
| Back to top |
|
|
heinzg
Tux's lil' helper
Joined: 10 Aug 2004
Posts: 96
Location: In the EU
|
| Posted: Thu Feb 23, 2006 2:16 pm Post subject: |
|
|
Hi
Thanx for the post.
I am using, in both cases using the built in driver that comes with the 2.6. kernel.
Last week I install suse SLES 9 with the latest 3ware driver from their web site. and the performance was even worse.
Here is the driver info from dmesg: full dmesg at http://www.wosindwirhier.de/dmes.txt
| Quote: | 3ware 9000 Storage Controller device driver for Linux v2.26.02.004.
ACPI: PCI Interrupt 0000:00:0d.0[A] -> GSI 17 (level, low) -> IRQ 16
scsi0 : 3ware 9000 Storage Controller
3w-9xxx: scsi0: Found a 3ware 9000 Storage Controller at 0xe3807000, IRQ: 16.
3w-9xxx: scsi0: Firmware FE9X 2.08.00.006, BIOS BE9X 2.03.01.052, Ports: 4.
Vendor: AMCC Model: 9500S-4LP DISK Rev: 2.08
Type: Direct-Access ANSI SCSI revision: 03
SCSI device sda: 1171808256 512-byte hdwr sectors (599966 MB)
SCSI device sda: drive cache: none
SCSI device sda: 1171808256 512-byte hdwr sectors (599966 MB)
SCSI device sda: drive cache: none
sda: sda1 sda2 sda3 sda4
sd 0:0:0:0: Attached scsi disk sda
sd 0:0:0:0: Attached scsi generic sg0 type 0 |
I re-ran the bench with the sync option
| Code: | | sync && time dd if=./bigfile of=./bigfile2 bs=32k && sync |
System 1:
| Quote: |
70384+0 records in
70384+0 records out
real 5m2.946s
user 0m0.036s
sys 0m8.081s
|
System 2:
| Quote: |
70384+0 records in
70384+0 records out
real 2m42.402s
user 0m0.056s
sys 0m15.877s
|
I will install Bonnie or somthing for a better bench test
Cheers Heinzg |
|
| Back to top |
|
|
heinzg
Tux's lil' helper
Joined: 10 Aug 2004
Posts: 96
Location: In the EU
|
| Posted: Thu Feb 23, 2006 5:26 pm Post subject: |
|
|
From the test I have been doing today I see that the read performance seems Ok
But the WRITE performance is as the box, in the celler. Realy bad (SUX).
Why does the system suffer such bad responsiveness ? Because when I was doing the write lmdd test I did a CTRL + C and it took over 30 sec to abort!!
lmdd Write Test
System 1
| Code: |
# for a in 1 2 3 4 5; do lmdd of=bob$a ; done
write: wanted=8192 got=8191
2147.4755 MB in 233.4636 secs, 9.1983 MB/sec
write: wanted=8192 got=8191
2147.4755 MB in 279.9048 secs, 7.6722 MB/sec
write: wanted=8192 got=8191
2147.4755 MB in 280.9912 secs, 7.6425 MB/sec
write: wanted=8192 got=8191
2147.4755 MB in 275.8492 secs, 7.7850 MB/sec
write: wanted=8192 got=8191
2147.4755 MB in 283.1327 secs, 7.5847 MB/sec
|
System 2
| Code: |
# for a in 1 2 3 4 5; do lmdd of=bob$a ; done
write: wanted=8192 got=8191
2147.4755 MB in 123.4821 secs, 17.3910 MB/sec
write: wanted=8192 got=8191
2147.4755 MB in 166.8202 secs, 12.8730 MB/sec
write: wanted=8192 got=8191
2147.4755 MB in 195.1745 secs, 11.0028 MB/sec
write: wanted=8192 got=8191
2147.4755 MB in 145.3806 secs, 14.7714 MB/sec
write: wanted=8192 got=8191
2147.4755 MB in 168.8912 secs, 12.7151 MB/sec
|
lmdd Read
System 1
| Code: |
for a in 1 2 3 4 5 ; do lmdd if=bob$a ; done
2147.4836 MB in 18.9463 secs, 113.3461 MB/sec
2147.4836 MB in 18.9795 secs, 113.1473 MB/sec
2147.4836 MB in 19.1919 secs, 111.8952 MB/sec
2147.4836 MB in 19.0852 secs, 112.5209 MB/sec
2147.4836 MB in 19.0269 secs, 112.8657 MB/sec
|
System2
| Code: |
# for a in 1 2 3 4 5 ; do lmdd if=bob$a ; done
2147.4836 MB in 34.1135 secs, 62.9511 MB/sec
2147.4836 MB in 36.1482 secs, 59.4077 MB/sec
2147.4836 MB in 34.8607 secs, 61.6019 MB/sec
2147.4836 MB in 32.8862 secs, 65.3004 MB/sec
2147.4836 MB in 32.8077 secs, 65.4567 MB/sec
|
Tiotest
System 1
| Code: |
tiotest -d ./del/ -f 50
Tiotest results for 4 concurrent io threads:
,----------------------------------------------------------------------.
| Item | Time | Rate | Usr CPU | Sys CPU |
+-----------------------+----------+--------------+----------+---------+
| Write 200 MBs | 28.2 s | 7.098 MB/s | 0.0 % | 10.6 % |
| Random Write 16 MBs | 30.8 s | 0.508 MB/s | 0.0 % | 0.2 % |
| Read 200 MBs | 0.2 s | 1257.395 MB/s | 5.0 % | 254.0 % |
| Random Read 16 MBs | 0.0 s | 1102.060 MB/s | 0.0 % | 84.6 % |
`----------------------------------------------------------------------'
Tiotest latency results:
,-------------------------------------------------------------------------.
| Item | Average latency | Maximum latency | % >2 sec | % >10 sec |
+--------------+-----------------+-----------------+----------+-----------+
| Write | 0.054 ms | 312.076 ms | 0.00000 | 0.00000 |
| Random Write | 0.006 ms | 0.045 ms | 0.00000 | 0.00000 |
| Read | 0.008 ms | 96.023 ms | 0.00000 | 0.00000 |
| Random Read | 0.003 ms | 0.019 ms | 0.00000 | 0.00000 |
|--------------+-----------------+-----------------+----------+-----------|
| Total | 0.029 ms | 312.076 ms | 0.00000 | 0.00000 |
`--------------+-----------------+-----------------+----------+-----------'
|
System 2
| Code: |
tiotest -d ./del/ -f 50
Tiotest results for 4 concurrent io threads:
,----------------------------------------------------------------------.
| Item | Time | Rate | Usr CPU | Sys CPU |
+-----------------------+----------+--------------+----------+---------+
| Write 200 MBs | 20.0 s | 9.998 MB/s | 0.5 % | 31.6 % |
| Random Write 16 MBs | 28.0 s | 0.559 MB/s | 0.0 % | 0.7 % |
| Read 200 MBs | 0.4 s | 511.822 MB/s | 9.2 % | 206.8 % |
| Random Read 16 MBs | 0.0 s | 470.052 MB/s | 0.0 % | 96.3 % |
`----------------------------------------------------------------------'
Tiotest latency results:
,-------------------------------------------------------------------------.
| Item | Average latency | Maximum latency | % >2 sec | % >10 sec |
+--------------+-----------------+-----------------+----------+-----------+
| Write | 0.108 ms | 368.090 ms | 0.00000 | 0.00000 |
| Random Write | 0.011 ms | 0.271 ms | 0.00000 | 0.00000 |
| Read | 0.016 ms | 69.615 ms | 0.00000 | 0.00000 |
| Random Read | 0.008 ms | 0.026 ms | 0.00000 | 0.00000 |
|--------------+-----------------+-----------------+----------+-----------|
| Total | 0.058 ms | 368.090 ms | 0.00000 | 0.00000 |
`--------------+-----------------+-----------------+----------+-----------'
|
Bonnie 1024MB
System 1
| Code: |
sync && bonnie -d ./del/ -s 1024 -m System1
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
System1 1024 11975 23.9 10378 2.5 6442 1.5 21372 38.6 54748 7.5 1000.8 1.5
|
System 2
| Code: |
sync && bonnie -d ./del/ -s 1024 -m System2
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
System2 1024 14435 39.6 27656 12.7 7671 3.0 25220 65.4 74271 16.0 1667.7 6.8
|
Bonnie++
System 1
| Code: |
smb # bonnie++ -d /tmp/ -m System2 -u heinzg
Version 1.93c ------Sequential Output------ --Sequential Input- --Random-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
System1 2G 281 98 7404 2 6776 1 1482 95 105688 15 311.3 3
Latency 42484us 49458ms 5584ms 44876us 276ms 556ms
Version 1.93c ------Sequential Create------ --------Random Create--------
System1 -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 9539 36 +++++ +++ 18009 76 11958 42 +++++ +++ 18332 80
Latency 16692us 1469us 1636us 10415us 15us 1673us
1.93c,1.93c,System1,1,1140691445,2G,,281,98,7404,2,6776,1,1482,95,105688,15,311.3,3,16,,,,,9539,36,+++++,+++,18009,76,11958,42,+++++,+++,18332,80,42484us,49458ms,5584ms,44876us,276ms,556ms,16692us,1469us,1636us,10415us,15us,1673us
|
System 2
| Code: |
smb # bonnie++ -d /tmp/ -m System2 -u heinzg
Version 1.93c ------Sequential Output------ --Sequential Input- --Random-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
System2 2G 174 99 12482 7 8868 3 1412 96 79073 20 327.5 8
Latency 67507us 34927ms 2481ms 35811us 248ms 251ms
Version 1.93c ------Sequential Create------ --------Random Create--------
System2 -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 9168 54 +++++ +++ 11983 80 9460 54 +++++ +++ 12458 90
Latency 42826us 2075us 19150us 46648us 27us 316us
1.93c,1.93c,System2,1,1140703800,2G,,174,99,12482,7,8868,3,1412,96,79073,20,327.5,8,16,,,,,9168,54,+++++,+++,11983,80,9460,54,+++++,+++,12458,90,67507us,34927ms,2481ms,35811us,248ms,251ms,42826us,2075us,19150us,46648us,27us,316us
|
Cheers
heinzg
Last edited by heinzg on Fri Feb 24, 2006 4:13 pm; edited 1 time in total |
|
| Back to top |
|
|
heinzg
Tux's lil' helper
Joined: 10 Aug 2004
Posts: 96
Location: In the EU
|
| Posted: Fri Feb 24, 2006 7:10 am Post subject: |
|
|
Hi
I don't know if this is the way to do things... I downloaded the latest 3ware driver unpacked it.
Then I copied the two source files from 3ware - "3w-9xxx.c 3w-9xxx.h" into the kernel source tree, replacing the existing files.
Re compiled the kernel. update Grub. reboot
The Box came up with a different driver version... So I take it that it worked.
Did some of the test as above, and it seems that the read times are a little better and the write times a little worse.
| Code: |
# sync ; sync && tiotest -d ./del/ -f 50
Tiotest results for 4 concurrent io threads:
,----------------------------------------------------------------------.
| Item | Time | Rate | Usr CPU | Sys CPU |
+-----------------------+----------+--------------+----------+---------+
| Write 200 MBs | 28.3 s | 7.066 MB/s | 0.3 % | 9.3 % |
| Random Write 16 MBs | 31.6 s | 0.494 MB/s | 0.0 % | 0.2 % |
| Read 200 MBs | 0.2 s | 1292.708 MB/s | 18.1 % | 157.7 % |
| Random Read 16 MBs | 0.0 s | 1132.246 MB/s | 29.0 % | 58.0 % |
`----------------------------------------------------------------------'
Tiotest latency results:
,-------------------------------------------------------------------------.
| Item | Average latency | Maximum latency | % >2 sec | % >10 sec |
+--------------+-----------------+-----------------+----------+-----------+
| Write | 0.043 ms | 304.055 ms | 0.00000 | 0.00000 |
| Random Write | 0.006 ms | 0.049 ms | 0.00000 | 0.00000 |
| Read | 0.005 ms | 64.018 ms | 0.00000 | 0.00000 |
| Random Read | 0.003 ms | 0.018 ms | 0.00000 | 0.00000 |
|--------------+-----------------+-----------------+----------+-----------|
| Total | 0.023 ms | 304.055 ms | 0.00000 | 0.00000 |
`--------------+-----------------+-----------------+----------+-----------'
#
# for a in 1 2 3; do lmdd of=bob$a ; done
write: wanted=8192 got=8191
2147.4755 MB in 244.0551 secs, 8.7991 MB/sec
write: wanted=8192 got=8191
2147.4755 MB in 271.7055 secs, 7.9037 MB/sec
write: wanted=8192 got=8191
2147.4755 MB in 293.9404 secs, 7.3058 MB/sec
|
So this problem goes on....
Heinzg |
|
| Back to top |
|
|
heinzg
Tux's lil' helper
Joined: 10 Aug 2004
Posts: 96
Location: In the EU
|
| Posted: Fri Feb 24, 2006 4:31 pm Post subject: [solved] |
|
|
I think this one is solved... The Write Cache on the card was disabled 
Now it goes as it should....
| Code: |
# tiotest -d ./del/ -f 50
Tiotest results for 4 concurrent io threads:
,----------------------------------------------------------------------.
| Item | Time | Rate | Usr CPU | Sys CPU |
+-----------------------+----------+--------------+----------+---------+
| Write 200 MBs | 4.5 s | 44.307 MB/s | 0.7 % | 65.0 % |
| Random Write 16 MBs | 9.2 s | 1.703 MB/s | 0.0 % | 1.0 % |
| Read 200 MBs | 0.2 s | 1233.289 MB/s | 4.9 % | 93.7 % |
| Random Read 16 MBs | 0.0 s | 1093.192 MB/s | 28.0 % | 56.0 % |
`----------------------------------------------------------------------'
Tiotest latency results:
,-------------------------------------------------------------------------.
| Item | Average latency | Maximum latency | % >2 sec | % >10 sec |
+--------------+-----------------+-----------------+----------+-----------+
| Write | 0.048 ms | 508.030 ms | 0.00000 | 0.00000 |
| Random Write | 0.006 ms | 0.036 ms | 0.00000 | 0.00000 |
| Read | 0.003 ms | 0.022 ms | 0.00000 | 0.00000 |
| Random Read | 0.003 ms | 0.019 ms | 0.00000 | 0.00000 |
|--------------+-----------------+-----------------+----------+-----------|
| Total | 0.024 ms | 508.030 ms | 0.00000 | 0.00000 |
`--------------+-----------------+-----------------+----------+-----------'
# sync && sync && for a in 1 2 3 4 5; do lmdd of=bob$a ; done
write: wanted=8192 got=8191
2147.4755 MB in 27.2877 secs, 78.6975 MB/sec
write: wanted=8192 got=8191
2147.4755 MB in 35.1331 secs, 61.1241 MB/sec
write: wanted=8192 got=8191
2147.4755 MB in 36.1987 secs, 59.3246 MB/sec
write: wanted=8192 got=8191
2147.4755 MB in 33.8631 secs, 63.4163 MB/sec
write: wanted=8192 got=8191
2147.4755 MB in 35.3913 secs, 60.6780 MB/sec
# sync && sync && for a in 1 2 3 4 5; do lmdd if=bob$a ; done
2147.4836 MB in 18.8087 secs, 114.1748 MB/sec
2147.4836 MB in 19.0856 secs, 112.5183 MB/sec
2147.4836 MB in 18.8823 secs, 113.7300 MB/sec
2147.4836 MB in 18.8632 secs, 113.8453 MB/sec
2147.4836 MB in 18.4551 secs, 116.3628 MB/sec
|
Cheers
Heinzg |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
|
Kernel & Hardware
