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SubjectRe: Supermicro X5DL8-GG (ServerWorks Grandchampion LE chipset) slow
Date
Date: Fri, 21 Feb 2003 12:24:10 -0500
From: Song Zhao <song.zhao@nuix.com.au>
To: Dave Jones <davej@codemonkey.org.uk>

On Thu, 20 Feb 2003 09:57 am, you wrote:
> On Thu, Feb 20, 2003 at 08:34:28PM -0500, Song Zhao wrote:
> > Dual 2.8GHz Xeon, 3ware Escalade 7850 (7500-8) 12 port IDE RAID
> > controller, RAID 10, 4x 1GB DDR SDRAM Registered ECC, 2x 80GB WD HDD,
> > 10x 120GB WD HDD, ServerWorks Grand Champion LE.
> > I am running RH7.3 with 2.4.20 kernel. The performance of this box is
> > about half of an almost identical box (Supermicro X5DP8-G2 mobo, E7501
> > chipset)
>
> You mentioned nothing about what sort of performance you were measuring.
> Disk, network, memory bandwidth etc.., however at a complete guess you
> are hitting this..

I did some disk I/O and CPU benchmarks, including bonnie++, hdparm, nbench,
unixbench, dbench, tiotest. I haven't done any network/memory testing yet.

Here is a rough comparison of E7500, E7501 and the ServerWorks Chipset:

==========================================================================

| Benchmark | E7500E7501 | ServerWorks | GrandChampion LE |

==========================================================================

| Nbench (integer index) | 33.47 | 38.78 | 10.61 |

==========================================================================

| Nbench (floating-point index) | 27.03 | 32.05 | 20.87 |

==========================================================================

| Unixbench index | 329 | 349.5 | 141.6 |

==========================================================================

| Hdparm -t | 70.33MB/s | 73.73MB/s | 46.04MB/s |

==========================================================================

| Hdparm -T | 512MB/s | 673.68MB/s | 673.68MB/s |

==========================================================================

| Tiobench (write) | 41.2MB/s | 42.09MB/s | 44.37MB/s |

==========================================================================

| Tiobench (random write) | 7.03MB/s | 9.73MB/s | 10.87MB/s |

==========================================================================

| Tiobench (read) | 1520.05MB/s | 1528.2MB/s | 1267.15MB/s |

==========================================================================

| Tiobench (random read) | 1391.36MB/s | 1471.28MB/s | 1041.67MB/s |

==========================================================================

> mtrr: Serverworks LE detected. Write-combining disabled.

from dmesg:

mtrr: v1.40 (20010327) Richard Gooch (rgooch@atnf.csiro.au)
mtrr: detected mtrr type: Intel

ServerWorks CSB5: IDE controller on PCI bus 00 dev 79
ServerWorks CSB5: chipset revision 147
ServerWorks CSB5: not 100% native mode: will probe irqs later

from lspci (please note that I took out 3ware card which I mentioned in my
previous mail):

00:00.0 Host bridge: ServerWorks: Unknown device 0014 (rev 31)
00:00.1 Host bridge: ServerWorks: Unknown device 0014
00:00.2 Host bridge: ServerWorks: Unknown device 0014
00:02.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27)
00:04.0 Ethernet controller: Intel Corp.: Unknown device 100e (rev 02)
00:0f.0 ISA bridge: ServerWorks CSB5 South Bridge (rev 93)
00:0f.1 IDE interface: ServerWorks CSB5 IDE Controller (rev 93)
00:0f.3 Host bridge: ServerWorks: Unknown device 0225
00:10.0 Host bridge: ServerWorks: Unknown device 0101 (rev 03)
00:10.2 Host bridge: ServerWorks: Unknown device 0101 (rev 03)
00:11.0 Host bridge: ServerWorks: Unknown device 0101 (rev 03)
00:11.2 Host bridge: ServerWorks: Unknown device 0101 (rev 03)
01:03.0 Ethernet controller: BROADCOM Corporation NetXtreme BCM5703X Gigabit
Ethernet (rev 02)

> This workaround was for older sewerworks chipsets which were
> buggy. Rumour has it that revisions 6 and above are ok.
> I have a patch pending for 2.5, if it turns out to be stable,
> it should also get merged back to 2.4
>
> Dave

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