Difference between revisions of "Talk:Optimizing Performance"
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| + | * Perhaps the page [[Troubleshooting:Performance]] should be merged with this one, with the Troubleshooting / Performance category handled as a redirect? They're pretty much the same information, but this page (Optimizing Performance) has MUCH more content... - [[User:DStulken|DStulken]] 01:43, 5 January 2009 (UTC) | ||
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NFS over TCP? Does anyone have a reference for NFS performance being better when using TCP? The only case I know of this being potentially the case is with high latency links. For LAN connections, as far as I know, UDP is faster. | NFS over TCP? Does anyone have a reference for NFS performance being better when using TCP? The only case I know of this being potentially the case is with high latency links. For LAN connections, as far as I know, UDP is faster. | ||
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| + | == Sata disk performance == | ||
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| + | For SATA disks it could be usefull to tune your disk a bit for large reads. If your disk is mounted as sda (as you can see if you enter 'mount' in a terminal you can change it as: | ||
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| + | echo "512" > /sys/block/sda/queue/max_sectors_kb<br> | ||
| + | echo "256" > /sys/block/sda/queue/read_ahead_kb | ||
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| + | == IVTV 10.2 driver == | ||
| + | Enabling VBI on version 10.2 of the ivtv driver is not a good idea. IRQ overloading is the result. | ||
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| + | == nodiratime and noatime == | ||
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| + | 'nodiratime' is a subset of 'noatime', so there is no need to specify both: specifying 'noatime' will use both. | ||
Latest revision as of 07:21, 15 November 2011
- Perhaps the page Troubleshooting:Performance should be merged with this one, with the Troubleshooting / Performance category handled as a redirect? They're pretty much the same information, but this page (Optimizing Performance) has MUCH more content... - DStulken 01:43, 5 January 2009 (UTC)
NFS over TCP? Does anyone have a reference for NFS performance being better when using TCP? The only case I know of this being potentially the case is with high latency links. For LAN connections, as far as I know, UDP is faster.
Sata disk performance
For SATA disks it could be usefull to tune your disk a bit for large reads. If your disk is mounted as sda (as you can see if you enter 'mount' in a terminal you can change it as:
echo "512" > /sys/block/sda/queue/max_sectors_kb
echo "256" > /sys/block/sda/queue/read_ahead_kb
IVTV 10.2 driver
Enabling VBI on version 10.2 of the ivtv driver is not a good idea. IRQ overloading is the result.
nodiratime and noatime
'nodiratime' is a subset of 'noatime', so there is no need to specify both: specifying 'noatime' will use both.
