bonnie++ Sun Fire X2100 on Solaris 10 and CentOS -- 5-year old system (my bonnie++)

[Bryan J. Smith]

On Sat, 2005-12-10 at 21:42 -0500, Bryan J. Smith wrote:
> P3 850MHz with 512MiB Reg ECC PC100, ServerWorks IIILE chipset, 3Ware
> Escalade 7800 (64-bit at 33MHz = only a measly 0.25GBps) with a 6-disc
> RAID-10 on _old_ 5400rpm Ultra66 80GB (20GB/platter) Maxtor disks:  
> Version  1.03       ------Sequential Output------ --Sequential Input- --Random-
>                     -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
> dilbert.ovied 3000M 15090  97 38337  33 18800  12 16303  87 56843  16  96.0   0

FYI, here is a colleague with the exact same P3/chipset/memory
configuration (850/IIILE/512MB-RegECCPC100), only:  
1)  He has a 3Ware Escalade 7450 (2MB SRAM, my 7800 only has 1MB SRAM)
2)  He has 4x 120GB WD 7200rpm disks (40GB/platter)
3)  They are in a RAID-5 (not ideal for the 7000/8000 series)
4)  Accessing over the GbE _network_ from one NFSv4 client

[ NOTE:  These are "bonnie" not "bonnie++" ]

Version  1.03      ------Sequential Output------ --Sequential Input- --Random-
                   -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
nebula      3G:64k           55041  38 17120  15           49181  19 108.6   3

[ He skipped the "Per Chr" operations, just ran the block tests ]

Once again, not only sequential 50MBps read/write on an old server, on a
card with virtually no buffering for RAID-5 (only 2MB SRAM, built more
for RAID-10) and platters not even 1/3rd the density (and DTR) of your
drives, but still 3x your rewrite speed!  3Ware 7000/8000 are _not_
ideal for RAID-5, far better at RAID-10.

I also have a feeling that his sequential input (read) is more of a fact
of NFS.  I regularly achieve >100MBps sequential reads with
60-80Gb/platter disk densities on even these old P3 systems, as long as
the card is in a 64-bit slot (all but the 7506 series in the 7000 run at
33MHz, not 66MHz).  Such should be the case in RAID-5 reads, because
it's just like RAID-0 (minus one stripe).


-- 
Bryan J. Smith   mailto:b.j.smith at ieee.org
http://thebs413.blogspot.com
------------------------------------------
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