1 The following is a short sample of output from the fspaging.d script. 2 3 4 fspaging.d traces syscall read and writes, vnode interface reads, writes, 5 getpage and putpage, and disk io. 6 7 # ./fspaging.d 8 Event Device RW Size Offset Path 9 disk_io dad1 R 1024 0 /extra1 10 disk_io dad1 R 8192 0 <none> 11 disk_io dad1 R 2048 0 <none> 12 sc-write . W 51200 0 /extra1/outfile 13 fop_write . W 51200 0 /extra1/outfile 14 fop_getpage . R 8192 0 /extra1/50k 15 disk_io dad1 R 8192 0 /extra1/50k 16 disk_ra dad1 R 8192 8 /extra1/50k 17 fop_getpage . R 8192 8 /extra1/50k 18 disk_ra dad1 R 34816 16 /extra1/50k 19 fop_getpage . R 8192 16 /extra1/50k 20 fop_getpage . R 8192 24 /extra1/50k 21 fop_getpage . R 8192 32 /extra1/50k 22 fop_getpage . R 8192 40 /extra1/50k 23 fop_getpage . R 8192 48 /extra1/50k 24 fop_putpage . W 8192 0 /extra1/outfile 25 fop_putpage . W 8192 8 /extra1/outfile 26 fop_putpage . W 8192 16 /extra1/outfile 27 fop_putpage . W 8192 24 /extra1/outfile 28 fop_putpage . W 8192 32 /extra1/outfile 29 fop_putpage . W 8192 40 /extra1/outfile 30 disk_io dad1 W 51200 0 /extra1/outfile 31 32 For a full discussion of this example, see fsrw_example.txt. 33
Indexes created Mon Apr 20 00:23:12 UTC 2026