Piete Brooks <pb@cam.cl> (01/10/85)
1) Is it much slower to have a 4094/512 file system as opposed to 4096/1024 ? All I can see is that extending files a bit at a time is slower. Our version of disktab has some of each for comparable discs. 2) Why oh why is the default h partition 291346 blocks ? I would have expected a multiple of 16 (or even 32 !) One effect is that 'fsck /dev/hp2h' fails if it tries to read block 291344. (it worked with /dev/rhp2h! dumpfs gives: magic 11954 time Wed Jan 9 12:54:16 1985 sblkno 16 cblkno 24 iblkno 28 dblkno 284 sbsize 2048 cgsize 2048 cgoffset 16 cgmask 0xffffffe0 ncg 30 size 145673 blocks 137616 bsize 4096 shift 12 mask 0xfffff000 fsize 1024 shift 10 mask 0xfffffc00 frag 4 shift 2 fsbtodb 1 minfree 10% maxbpg 256 maxcontig 1 rotdelay 4ms rps 60 csaddr 284 cssize 1024 shift 8 mask 0xffffff00 ntrak 19 nsect 32 spc 608 ncyl 480 cpg 16 bpg 1216 fpg 4864 ipg 2048 nindir 1024 inopb 32 nspf 2 nbfree 3571 ndir 1151 nifree 48384 nffree 25 cgrotor 21 fmod 0 ronly 0 )