Messages in this thread |  | | Date | Tue, 09 Oct 2001 11:15:42 +0800 | From | David Chow <> | Subject | Re: write/read cache raid5 |
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Alistair Riddell ¼g¹D¡G > > On Mon, 8 Oct 2001 raid@ddx.a2000.nu wrote: > > > So there is no way i can Speedup write to the raid5 array ? > > (memory will be ecc and the server will be on ups) > > Your disks go as fast as they go, that is a physical limitation. > > More RAM means your server can store up data blocks to be written when the > disks are less busy. But the data still has to be written to disk > sometime. > > More RAM will certainly help by caching reads though. > > 6 disks raided together means the bottleneck will likely be your network, > unless your server is on gigabit ethernet and has a ton of clients and/or > gigabit to the desktop. > > -- > Alistair Riddell - BOFH > IT Manager, George Watson's College, Edinburgh > Tel: +44 131 447 7931 Ext 176 Fax: +44 131 452 8594 > Microsoft - because god hates us > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
Yes my server serve lots of clients and have lots of NICs even gigabit... how can I increase write/read cache on RAID5 ? It is better performed when big cache allows on top (before) raid computation work and physical disk writes. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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