Difference between revisions of "Iozone"

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         Children see throughput for 1 random writers    =  14548.73 KB/sec
 
         Children see throughput for 1 random writers    =  14548.73 KB/sec
 
</pre>
 
</pre>
 +
===WDC WD20EADS-00R===
 +
On a 7+1 RAID 5 array I have eight of these drives. This was done via software RAID through a Tempo SATA X4P Serial ATA host controller for PCI-X.
 +
 +
The testbed in this case has the following statistics:
 +
 +
* Software RAID 5, 7+1 Array
 +
* 64k Chunks
 +
* XFS Filesystem
 +
* Dual Intel Xeon 3.2Ghz
 +
 +
The test was done against a 8gb file in order to get around any sort of caching.
 +
[[Image:Linx32array.png | 650px]]
  
 
==Maxtor==
 
==Maxtor==
Line 66: Line 78:
  
 
==Seagate==
 
==Seagate==
 +
===ST31000520AS===
 +
These are 1tb SATA 3gbs drives with 32mb of cache running at 5900rpm (green drives).
 +
 +
They are installed in a falcon III storage bay with a 3gbs Fibre channel connection.
 +
 +
* RAID 6 Configuration (6+2)
 +
<pre>
 +
Children see throughput for  1 initial writers =  122314.44 KB/sec
 +
Children see throughput for  1 readers =  146547.94 KB/sec
 +
Children see throughput for 1 random readers =  42988.03 KB/sec
 +
Children see throughput for 1 random writers =  79221.51 KB/sec
 +
 +
</pre>
 +
 
===ST373405LW===
 
===ST373405LW===
  
Line 97: Line 123:
 
         Children see throughput for 1 random writers    =    5807.17 KB/sec
 
         Children see throughput for 1 random writers    =    5807.17 KB/sec
 
</pre>
 
</pre>
 +
 
==Samsung==
 
==Samsung==
 
===HD103UJ===
 
===HD103UJ===
−
iozone -s 4096m -r 2048k -i 0 -i 1 -i 2 -+n -t 1
+
On a 7+1 RAID 5 array I have eight of these drives. This was done via software RAID through a Silicon Image 3132 Serial ATA Raid Controller. Yes, I know the controller has RAID capability. Unfortunately, it sucks ass and only supports a maximum of five drives attached to it.  
−
<pre>
 
−
Children see throughput for  1 initial writers =  149834.62 KB/sec
 
−
Parent sees throughput for  1 initial writers =  146610.63 KB/sec
 
−
Min throughput per process =  149834.62 KB/sec
 
−
Max throughput per process =  149834.62 KB/sec
 
−
Avg throughput per process =  149834.62 KB/sec
 
−
Min xfer = 4194304.00 KB
 
  
−
Children see throughput for  1 readers =  142497.44 KB/sec
+
The testbed in this case has the following statistics:
−
Parent sees throughput for  1 readers =  142448.43 KB/sec
+
* Software RAID 5, 7+1 Array
−
Min throughput per process =  142497.44 KB/sec
+
* 64k Chunks
−
Max throughput per process =  142497.44 KB/sec
+
* XFS Filesystem
−
Avg throughput per process =  142497.44 KB/sec
+
* Dual AMD Opteron 244
−
Min xfer = 4194304.00 KB
 
  
−
Children see throughput for 1 random readers =  84628.58 KB/sec
+
The test was done against a 16gb file in order to get around any sort of caching.
−
Parent sees throughput for 1 random readers =  84611.25 KB/sec
+
[[Image:7-1raidstats.png | 650px]]
−
Min throughput per process =  84628.58 KB/sec
 
−
Max throughput per process =  84628.58 KB/sec
 
−
Avg throughput per process =  84628.58 KB/sec
 
−
Min xfer = 4194304.00 KB
 
−
 
 
−
Children see throughput for 1 random writers =  103196.52 KB/sec
 
−
Parent sees throughput for 1 random writers =  100444.03 KB/sec
 
−
Min throughput per process =  103196.52 KB/sec
 
−
Max throughput per process =  103196.52 KB/sec
 
−
Avg throughput per process =  103196.52 KB/sec
 
−
Min xfer = 4194304.00 KB
 
−
</pre>
 

Latest revision as of 11:12, 3 May 2011

The standard command I use is as follows:

iozone -s 1024m -r 32k -i 0 -i 1 -i 2 -+n -t 1

Western Digital

WDC WD1600JD-75H

        Children see throughput for  1 initial writers  =   49564.20 KB/sec
        Children see throughput for  1 readers          =   59590.32 KB/sec
        Children see throughput for 1 random readers    =    8309.17 KB/sec
        Children see throughput for 1 random writers    =   22801.88 KB/sec

WDC WD1200JB-75CRA0

        Children see throughput for  1 initial writers  =   46014.13 KB/sec
        Children see throughput for  1 readers          =   40067.62 KB/sec
        Children see throughput for 1 random readers    =   11244.67 KB/sec
        Children see throughput for 1 random writers    =   16124.12 KB/sec

WDC WD3200JS-60P

        Children see throughput for  1 initial writers  =   70735.41 KB/sec
        Children see throughput for  1 readers          =   61879.04 KB/sec
        Children see throughput for 1 random readers    =   12072.48 KB/sec
        Children see throughput for 1 random writers    =   22518.14 KB/sec

(3 Drives in LVM) 

        Children see throughput for  1 initial writers  =   64858.33 KB/sec
        Children see throughput for  1 readers          =   64913.92 KB/sec
        Children see throughput for 1 random readers    =   33801.48 KB/sec
        Children see throughput for 1 random writers    =   71252.03 KB/sec

WDC WD5000AAJB-00UHA

This is the drive through an IEEE1394 Firewire connection:

This was also done on a FAT32 partition. 

        Children see throughput for  1 initial writers  =   26731.99 KB/sec
        Children see throughput for  1 readers          =   29232.09 KB/sec
        Children see throughput for 1 random readers    =    8226.97 KB/sec
        Children see throughput for 1 random writers    =   24798.85 KB/sec

Now, with an ext3 filesystem installed: 

        Children see throughput for  1 initial writers  =   27004.33 KB/sec
        Children see throughput for  1 readers          =   28917.23 KB/sec
        Children see throughput for 1 random readers    =    8041.50 KB/sec
        Children see throughput for 1 random writers    =   11330.02 KB/sec

Finally, in a RAID 5 array, 2+1 configuration, XFS formatted, software RAID: 

        Children see throughput for  1 initial writers  =   18200.69 KB/sec
        Children see throughput for  1 readers          =   35551.36 KB/sec
        Children see throughput for 1 random readers    =    8121.42 KB/sec
        Children see throughput for 1 random writers    =   14548.73 KB/sec

WDC WD20EADS-00R

On a 7+1 RAID 5 array I have eight of these drives. This was done via software RAID through a Tempo SATA X4P Serial ATA host controller for PCI-X.

The testbed in this case has the following statistics:

  • Software RAID 5, 7+1 Array
  • 64k Chunks
  • XFS Filesystem
  • Dual Intel Xeon 3.2Ghz

The test was done against a 8gb file in order to get around any sort of caching.

Error creating thumbnail: File missing

Maxtor

Maxtor 54098U8

        Children see throughput for  1 initial writers  =   25403.75 KB/sec
        Children see throughput for  1 readers          =    5227.56 KB/sec
        Children see throughput for 1 random readers    =    6036.05 KB/sec
        Children see throughput for 1 random writers    =    9144.35 KB/sec

Seagate

ST31000520AS

These are 1tb SATA 3gbs drives with 32mb of cache running at 5900rpm (green drives).

They are installed in a falcon III storage bay with a 3gbs Fibre channel connection.

  • RAID 6 Configuration (6+2)
	Children see throughput for  1 initial writers 	=  122314.44 KB/sec
	Children see throughput for  1 readers 		=  146547.94 KB/sec
	Children see throughput for 1 random readers 	=   42988.03 KB/sec
	Children see throughput for 1 random writers 	=   79221.51 KB/sec

ST373405LW

        Children see throughput for  1 initial writers  =   48671.05 KB/sec
        Children see throughput for  1 readers          =   54253.02 KB/sec
        Children see throughput for 1 random readers    =   16231.61 KB/sec
        Children see throughput for 1 random writers    =   42183.82 KB/sec

ST173404LW

        Children see throughput for  1 initial writers  =   30251.11 KB/sec
        Children see throughput for  1 readers          =   28398.42 KB/sec
        Children see throughput for 1 random readers    =   14386.34 KB/sec
        Children see throughput for 1 random writers    =   17114.76 KB/sec

ST336607LC

These numbers are kind of screwed up. I find it hard to believe that a Seagate Cheetah 10k disk only gets this kind of performance. I am probably going to retire the machine that this disk is in, and find something a bit better. 

        Children see throughput for  1 initial writers  =    4268.85 KB/sec
        Children see throughput for  1 readers          =    3454.83 KB/sec
        Children see throughput for 1 random readers    =    2762.78 KB/sec
        Children see throughput for 1 random writers    =    3499.16 KB/sec

ST380811AS

Some more unbelievable numbers. It wouldn't surprise me here if there was some major caching going on. The machine itself has 8gb of RAM in this situation. 

        Children see throughput for  1 initial writers  =   20867.79 KB/sec
        Children see throughput for  1 readers          = 1616623.50 KB/sec
        Children see throughput for 1 random readers    = 1603349.50 KB/sec
        Children see throughput for 1 random writers    =    5807.17 KB/sec

Samsung

HD103UJ

On a 7+1 RAID 5 array I have eight of these drives. This was done via software RAID through a Silicon Image 3132 Serial ATA Raid Controller. Yes, I know the controller has RAID capability. Unfortunately, it sucks ass and only supports a maximum of five drives attached to it.

The testbed in this case has the following statistics:

  • Software RAID 5, 7+1 Array
  • 64k Chunks
  • XFS Filesystem
  • Dual AMD Opteron 244

The test was done against a 16gb file in order to get around any sort of caching.

Error creating thumbnail: File missing
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