PE 1800 PERC4/SC write performance

Matthew DeJong mdejong at dejonginc.com
Sat Apr 29 15:19:53 CDT 2006


Here is the apples to apples comparison.  Overall it is fairly similar
to your results.  It seems like the speed is dropping off severely when
it reaches the 2GB test. Anyway, I first noticed the issue because I am
running Vmware GSX 3.2 and logs for the Virtual machine files show RW
times in the 20-30 seconds for a command that will read/write less than
10 KB at random times.  Vmware support was pointing the finger at the RW
tests that I was performing.  Anyway, I am going to check into the hard
drive type when I get back into the office.

Iozone took a little over 40 minuets to complete.
	Iozone: Performance Test of File I/O
	        Version $Revision: 3.263 $
		Compiled for 32 bit mode.
		Build: linux 

	Contributors:William Norcott, Don Capps, Isom Crawford, Kirby
Collins
	             Al Slater, Scott Rhine, Mike Wisner, Ken Goss
	             Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain
CYR,
	             Randy Dunlap, Mark Montague, Dan Million, 
	             Jean-Marc Zucconi, Jeff Blomberg,
	             Erik Habbinga, Kris Strecker, Walter Wong.

	Run began: Sat Apr 29 14:56:59 2006

	Using minimum file size of 524288 kilobytes.
	Using maximum file size of 2097152 kilobytes.
	Auto Mode
	Cross over of record size disabled.
	Command line used: ./iozone -n 512m -g 2g -f test.out -az -i0
-i1
	Output is in Kbytes/sec
	Time Resolution = 0.000001 seconds.
	Processor cache size set to 1024 Kbytes.
	Processor cache line size set to 32 bytes.
	File stride size set to 17 * record size.
                                                            random
random    bkwd  record  stride                                   
              KB  reclen   write rewrite    read    reread    read
write    read rewrite    read   fwrite frewrite   fread  freread
          524288       4  264576  646898  1492711  1520397

          524288       8  289154  660507  1666374  1726942

          524288      16  300149  699894  1944507  1966867

          524288      32  293641  718210  1966749  2045977

          524288      64  301815  741746  2090454  2138832

          524288     128  311868  746704  2011726  2168424

          524288     256  312476  761608  2099351  2190201

          524288     512  312461  722570  1965237  2144274

          524288    1024  299916  692823  1381126  1399889

          524288    2048  285049  637515   994801  1001033

          524288    4096  289618  633259   966112   990276

          524288    8192  289300  607463   979552   987008

          524288   16384  280119  620299   973899   981694

         1048576       4  272353  590367  1530602  1556665

         1048576       8  283272  627307  1776928  1806307

         1048576      16  296379  692436  1953259  1984207

         1048576      32  296698  711043  1972242  2103703

         1048576      64  305873  737602  2131424  1981623

         1048576     128  307436  715663  2157777  2079245

         1048576     256  304777  718732  2179515  2101338

         1048576     512  306837  717351  2124950  2187532

         1048576    1024  298214  680887  1380384  1410346

         1048576    2048  284437  601957   994461   999087

         1048576    4096  283793  571339   989065   976472

         1048576    8192  284072  619312   972332   977893

         1048576   16384  285387  624100   982137   985205

         2097152       4  121151   56360  1493933  1526728

         2097152       8   60361   53859  1791923  1809696

         2097152      16   57554   54448  1967721  1984402

         2097152      32   55437   58195  2034229  2061926

         2097152      64   57202   54906  1956913  2154958

         2097152     128   56152   54857  2020309  2183998

         2097152     256   55288  129611  2178671  2199473

         2097152     512   56186   54165  2118198  2136020

         2097152    1024   57717   53757  1412365  1424924

         2097152    2048   58967   57279   974913   983324

         2097152    4096   59840   53600   927708   990505

         2097152    8192   58139   55658   909564   928544

         2097152   16384   57764   57490   984673   988934


iozone test complete.

----A smaller random ~ 15 minutes
	Iozone: Performance Test of File I/O
	        Version $Revision: 3.263 $
		Compiled for 32 bit mode.
		Build: linux 

	Contributors:William Norcott, Don Capps, Isom Crawford, Kirby
Collins
	             Al Slater, Scott Rhine, Mike Wisner, Ken Goss
	             Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain
CYR,
	             Randy Dunlap, Mark Montague, Dan Million, 
	             Jean-Marc Zucconi, Jeff Blomberg,
	             Erik Habbinga, Kris Strecker, Walter Wong.

	Run began: Sat Apr 29 16:00:31 2006

	Using minimum file size of 131072 kilobytes.
	Using maximum file size of 533504 kilobytes.
	Auto Mode
	Cross over of record size disabled.
	Command line used: ./iozone -n 128m -g 521m -f test.out -az -i0
-i2
	Output is in Kbytes/sec
	Time Resolution = 0.000001 seconds.
	Processor cache size set to 1024 Kbytes.
	Processor cache line size set to 32 bytes.
	File stride size set to 17 * record size.
                                                            random
random    bkwd  record  stride                                   
              KB  reclen   write rewrite    read    reread    read
write    read rewrite    read   fwrite frewrite   fread  freread
          131072       4  279149  627087                   1055832
577208                                                          
          131072       8  288892  695563                   1351857
693513                                                          
          131072      16  300793  728493                   1540861
716471                                                          
          131072      32  305741  707644                   1741082
785336                                                          
          131072      64  308080  763982                   2002203
824066                                                          
          131072     128  314768  730364                   1888673
814587                                                          
          131072     256  308758  771492                   2073632
840414                                                          
          131072     512  314056  765603                   1907860
801193                                                          
          131072    1024  296494  670140                   1159693
716960                                                          
          131072    2048  277440  646496                    994460
690426                                                          
          131072    4096  272366  636704                    920591
673774                                                          
          131072    8192  291080  637776                    896948
660871                                                          
          131072   16384  286874  626739                    955432
681155                                                          
          262144       4  276603  630402                   1106498
608277                                                          
          262144       8  274610  708193                   1317684
692160                                                          
          262144      16  299394  733024                   1643691
769536                                                          
          262144      32  290253  713229                   1781739
779167                                                          
          262144      64  313339  764446                   1872939
788564                                                          
          262144     128  315516  768987                   2092230
850660                                                          
          262144     256  294805  776161                   2106742
855449                                                          
          262144     512  310725  769592                   1912470
799531                                                          
          262144    1024  289723  670357                   1265192
748884                                                          
          262144    2048  289237  640655                    998427
694126                                                          
          262144    4096  288655  636611                    972589
686111                                                          
          262144    8192  287359  643214                    922766
686913                                                          
          262144   16384  291624  614833                    904602
665210                                                          
          524288       4  271036  646172                   1051418
602537                                                          
          524288       8  276982  666030                   1327311
690155                                                          
          524288      16  289833  712515                   1681396
768319                                                          
          524288      32  303513  734785                   1867255
801716                                                          
          524288      64  308737  746312                   2008466
838387                                                          
          524288     128  311911  742613                   2093008
852194                                                          
          524288     256  312538  723363                   2119063
858618                                                          
          524288     512  304606  716176                   2024254
851557                                                          
          524288    1024  288327  680702                   1313853
752823                                                          
          524288    2048  290180  608996                    984547
687097                                                          
          524288    4096  289745  614119                    930884
682693                                                          
          524288    8192  289700  618890                    928454
678414                                                          
          524288   16384  284951  632242                    961114
689191                                                          

iozone test complete.

Matt DeJong



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