Am 31/03/10 01:58, schrieb john: > Hi David et al, > > On Tue, Mar 30, 2010 at 3:59 PM, David Burgess<[email protected]> wrote: > >> >> One SSD to rule them all. You could keep /home on a platter if you >> need a lot of space for it. >> > > For context I have 16 Gig's of of RAM and 4 Cores ~3.Ghz. > > Are SSD write times comparable with SAS? I wasn't aware of that. I'll > take a look. > > Here's what iostat told me during one recent bit of misery. When I see > nearly 30K Blks_wrtn/s is it > reasonable to conclude that 30K * 4092 (ext 3 blk size) 122.8 m bytes > sec? That seems pretty high. Am I crazy?
A block in iostat is 512 Bytes [1] - so you have 15MB/s, that seem reasonable. I wonder what is doing all those writes. The browser disk cache? If you don't want to buy new hardware, it might be worth trying to disable it, https://help.ubuntu.com/community/UbuntuLTSP/Firefox3Optimize Jakob [1] From man iostat > Blk_read/s > Indicate the amount of data read from the device > expressed in a number of blocks per second. Blocks are > equivalent to sectors with kernels 2.4 and later and > therefore have a size of 512 bytes. With older kernels, a > block is of indeterminate size. > > Blk_wrtn/s > Indicate the amount of data written to the device > expressed in a number of blocks per second. ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
