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Hello all, |
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|
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Sorry if it seems like this is a repeat question, but I've gone through |
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my Gentoo list for the past 2 years and none of the answers provided for |
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previous threads on this seem to work for me. Here's the situation: |
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|
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Gentoo box: |
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AMD Athlon X2 3800+ |
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Intel PCIe Gigabit Network adapter |
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01:00.0 Ethernet controller: Intel Corporation 82572EI Gigabit Ethernet |
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Controller (Copper) (rev 06) |
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Supermicro 8-port PCI-X SATA card (in a PCI slot) |
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03:06.0 SCSI storage controller: Marvell Technology Group Ltd. |
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MV88SX6081 8-port SATA II PCI-X Controller (rev 09) |
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Western Digital 1TB Black Edition hard drive (writing to an XFS partition) |
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2.6.27-amd64 (Yes, it's old, it's on my list to upgrade) |
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|
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Client: |
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MacBook Pro |
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Intel Core 2 Duo 2.26Ghz |
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Intel integrated Gigabit Network adapter |
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Seagate 160GB SATA hard drive (5400RPM) |
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Mac OS X 10.6.1 |
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|
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/etc/exports: |
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/mnt/daigo 192.168.0.31(rw,insecure) |
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|
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hdparm -tT /dev/sdf |
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|
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/dev/sdf: |
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Timing cached reads: 1230 MB in 2.00 seconds = 614.64 MB/sec |
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Timing buffered disk reads: 316 MB in 3.01 seconds = 104.95 MB/sec |
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|
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Over NFS I'm getting 3.7MB/s, with occasional bursts of 25MB/s for 1-5 |
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seconds, then returning to 3.7MB/s. During this entire process, the |
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system load is hovering around 5.5. |
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|
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The same copy, using samba to share that partition, I get 45MB/s |
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sustained. System load is around 1.0. |
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|
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Even though the SATA controller is over the PCI bus, which does limit |
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its performance somewhat (no RAID arrays are running on it) as you can |
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see from the attached hdparm output, the disk is capable of speeds that |
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should be around what gigabit ethernet can provide. |
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|
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I know this is a Gentoo list, and not generally the place to complain |
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about poor NFS performance in Mac OS X, we all know Gentoo is superior |
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in just about every way anyway. However, I simply cannot believe that |
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the difference in transfer speeds is due to strictly to Mac OS X's NFS |
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capabilities. |
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|
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Does anyone have any suggestions for reducing the system load caused by |
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NFS? Can you suggest any performance increasing tips for my NFS |
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configuration? |
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|
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Thanks, |
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Hal |
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