Allora ho implementato un raid0 (2.6.5+raid0k.m.+raidtools3) che pare
funzionare cio� leggo e scrivo files sul dev md0 (cunck-size 8 due
discki ide udma 133mhz).
Pero' mi sembrava lento allora l'ho testato con iozone ed infatti la
lettura stripe e' addirittura peggio di quella su asingolo disco. Dove
posso aver sbagliato?
Iozone output:
File size set to 4096 KB
Command line used: iozone -s 4096
Output is in Kbytes/sec
Time Resolution = 0.000001 seconds.
Processor cache size set to 1024 Kbytes.
Processor cache line size set to 32 bytes.
File stride size set to 17 * record size.
random
random bkwd record stride
KB reclen write rewrite read reread read
write read rewrite read fwrite frewrite fread freread
4096 4 175169 327258 414447 418945 414528
348714 403669 1931077 401213 165622 307508 373790 415503
Raidtab:
raiddev /dev/md0
raid-level 0
nr-raid-disks 2
persistent-superblock 1
chunk-size 8
device /dev/hde1
raid-disk 0
device /dev/hdg1
raid-disk 1
ciao!
--
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