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List:       drbd-user
Subject:    RE: [DRBD-user] speed problem...
From:       PEYRICHOU R Ext OCISI <rpeyrichou.ext () francetelecom ! com>
Date:       2004-05-21 14:28:46
Message-ID: 50145EDEDF05EE4DBF87D5B6B317040702836E () PUEXCB90 ! nanterre ! francetelecom ! fr
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Hello,

Here are my sequantial write test results in mode B ans C:

Mode C:
2.4.9-e.35smp                  10   4096    1   17.65 15.88%     0.021        0.13   \
0.00000  0.00000   111 2.4.9-e.35smp                  10   4096    2   14.70 19.11%   \
0.042        0.15   0.00000  0.00000    77 2.4.9-e.35smp                  10   4096   \
4   12.69 50.77%     0.094        0.35   0.00000  0.00000    25 2.4.9-e.35smp         \
10   4096    8   15.09 56.56%     0.094        0.36   0.00000  0.00000    27 \
2.4.9-e.35smp                  10   4096   16   14.57 45.52%     0.140       51.64   \
0.00000  0.00000    32 2.4.9-e.35smp                  10   4096   32    5.50 20.61%   \
0.141       77.02   0.00000  0.00000    27 2.4.9-e.35smp                  10   4096   \
64    3.40 10.88%     0.143      194.73   0.00000  0.00000    31

Mode B:
2.4.9-e.35smp                  10   4096    1   20.72 24.86%     0.021        0.12   \
0.00000  0.00000    83 2.4.9-e.35smp                  10   4096    2   19.79 33.63%   \
0.041        0.15   0.00000  0.00000    59 2.4.9-e.35smp                  10   4096   \
4   12.27 41.39%     0.092        0.31   0.00000  0.00000    30 2.4.9-e.35smp         \
10   4096    8   13.51 33.76%     0.084        0.55   0.00000  0.00000    40 \
2.4.9-e.35smp                  10   4096   16   14.28 47.30%     0.098       24.60   \
0.00000  0.00000    30 2.4.9-e.35smp                  10   4096   32    5.57 16.53%   \
0.177      143.64   0.00000  0.00000    34 2.4.9-e.35smp                  10   4096   \
64    3.53 12.36%     0.157      224.47   0.00000  0.00000    29

they are not better than A mode... :(

so, someone can tell me how to custom my drbd for having better rates with this kind \
of hardware?

tanks.


-----Message d'origine-----
De : drbd-user-admin@lists.linbit.com
[mailto:drbd-user-admin@lists.linbit.com]De la part de Lars Ellenberg
Envoyé : mercredi 19 mai 2004 17:44
À : drbd-user@lists.linbit.com
Objet : Re: [DRBD-user] speed problem...


/ 2004-05-19 17:36:18 +0200
\ PEYRICHOU R Ext OCISI:
> Hello
> 
> I'm trying to set up a drbd configuration... and i have some throughput problems...
> 
> so, i have :
> - 2 IBM x345 servers biPIV 2.4G
> - with 2GB of ram,
> - RAID0 HDD's on 3 hot plug SCSI 80GB (ultra fast somethink 320)
> 
> And, i'm trying to set up a drbd mirroring over the native intel GBit ethernet \
> interfaces.

> -with drbd mode A:

please try protocol C.

	Lars Ellenberg
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