Subject:
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Re: New LUGNET server hardware details
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Newsgroups:
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lugnet.off-topic.geek
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Date:
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Sun, 29 Feb 2004 02:50:35 GMT
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Viewed:
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1381 times
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In lugnet.off-topic.geek, Tim David wrote:
> Interesting that the HDDs are serialATA rather than SCSI. [...]
Matthew could answer this better than I, but my opinion is that the money is put
to better use in ECC memory, and gobs of it. We're starting of with 1GB of RAM,
upgradeable to 8GB. Since the OS automatically allocates unused RAM toward
filesystem cache, and the present server typically runs with 100-200MB of
filesystem cache, which means we expect half a GB of RAM in the new boxen to act
as filesystem cache, hugely reducing disk read latency issues. (Writes to disk
are far less frequent on lugnet.com than reads from disk are, except for logs,
which may go on the secondary disk.) Initially we'll be running ext3 but are
looking at ReiserFS v3 and v4 (the latter of which has wandering logs to greatly
reduce comitted write latency).
--Todd
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Message has 2 Replies:
 | | Re: New LUGNET server hardware details
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| (...) That summarizes it pretty well. SATA is something like five times cheaper per byte, and that's not even counting that we'd need a more expensive motherboard with a SCSI controller. Right now, disk isn't really the bottleneck for the load, so (...) (21 years ago, 29-Feb-04, to lugnet.off-topic.geek)
| | | Re: New LUGNET server hardware details
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| (...) Don't forget to turn off atime updates ('noatime' option in FreeBSD fstab) on all filesystems that don't need it (everything but var usually). This will prevent all those reads from inadvertantly creating filesystems writes. Brickshelf too is (...) (21 years ago, 1-Mar-04, to lugnet.off-topic.geek)
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Message is in Reply To:
| | Re: New LUGNET server hardware details
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| (...) Interesting that the HDDs are serialATA rather than SCSI. However from my experiences this week no bad thing. One server with dual HDDs in a mirrored RAID config had the SCSI controller backplane fail. However replacing it lost all the data on (...) (21 years ago, 29-Feb-04, to lugnet.off-topic.geek)
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