Home » Archimedes archive » Acorn User » AU 1996-03 B.adf » Features » Fsck_130/StatsHelp
Fsck_130/StatsHelp
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Archimedes archive » Acorn User » AU 1996-03 B.adf » Features |
| Filename: | Fsck_130/StatsHelp |
| Read OK: | ✔ |
| File size: | 0ACA bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
This file should explain the meaning of the various statistics printed by fsck or displayed in the 'Statistics' window of FSCK�: it would be better if you read the file MapExpl before reading this... Since FSCK��supports interactive help, you can try to use it over the 'Statistics' window instead of reading this file. The value printed below are just an example (actually they are taken from my 84Mb HardDisc...). - Number of shared fragments: 1720 (738 contains a directory) This is the number of the map blocks (see MapExpl file) that are actually occupied by small files that can share sectors instead of a whole file. - Wasted sectors in shared fragments: 3964 (2029568 bytes (2.3%)) This is the number of sectors that are wasted because the small files that could share sectors (see above) actually don't share all the possible sectors with other small files (see MapExpl again). As you can see there are quite a lot of wasted sectors on my HD! - Directories bigger than the minimum size: 155 For some obscure reason some directories are bigger than their natural size: the extra size can be shared with other files, so you don't have to worry about this. - Fragmented files: 13 (8 must be fragmented) This is the number of files that are fragmented over several map chunks. On my HD only 13 of 4716 files are fragmented: RISC OS seems to be very good at keeping files in a single chunk! Moreover, 8 of these 13 files must be fragmented because they are bigger than the size of a single zone. - Total space allocated in map for files: 73865728 bytes (83.9%) This is the amount of disc space that is allocated to files (including directories). The space wasted because of shared map chunks is NOT counted here (since it can still be used by other files). - Total space used by files: 72604406 bytes (82.4%) This is the real space used by files and directories. This is less than the one allocated in the because of the sector boundaries. - Space wasted because of sector boundaries: 1261322 bytes (1.4%) This is the difference between the two previous values (ie. space allocated for files - space actually used by files). - Defects: 0 (0 bytes (0.0%)) No comments needed... - Space used for map/root/bootblock: 93184 bytes (0.1%) Just what it says to be... - Files: 4716 (71092982 bytes (80.7%)) Number of files and space used only by them (ie. no directories). This is the same result that can be given by 'Count'ing the whole disc. - Directories: 738 (1511424 bytes (1.7%)) Number of directories and space used only by them (should be number of dirs multiplied by 2048). - Total used space: 75988480 bytes (86.3%) - Total free space: 12091904 bytes (13.7%) The same given by Free.
00000000 54 68 69 73 20 66 69 6c 65 20 73 68 6f 75 6c 64 |This file should| 00000010 20 65 78 70 6c 61 69 6e 20 74 68 65 20 6d 65 61 | explain the mea| 00000020 6e 69 6e 67 20 6f 66 20 74 68 65 20 76 61 72 69 |ning of the vari| 00000030 6f 75 73 20 73 74 61 74 69 73 74 69 63 73 20 70 |ous statistics p| 00000040 72 69 6e 74 65 64 20 62 79 0a 66 73 63 6b 20 6f |rinted by.fsck o| 00000050 72 20 64 69 73 70 6c 61 79 65 64 20 69 6e 20 74 |r displayed in t| 00000060 68 65 20 27 53 74 61 74 69 73 74 69 63 73 27 20 |he 'Statistics' | 00000070 77 69 6e 64 6f 77 20 6f 66 20 46 53 43 4b b3 3a |window of FSCK.:| 00000080 20 69 74 20 77 6f 75 6c 64 20 62 65 20 62 65 74 | it would be bet| 00000090 74 65 72 20 69 66 0a 79 6f 75 20 72 65 61 64 20 |ter if.you read | 000000a0 74 68 65 20 66 69 6c 65 20 4d 61 70 45 78 70 6c |the file MapExpl| 000000b0 20 62 65 66 6f 72 65 20 72 65 61 64 69 6e 67 20 | before reading | 000000c0 74 68 69 73 2e 2e 2e 0a 0a 53 69 6e 63 65 20 46 |this.....Since F| 000000d0 53 43 4b b3 a0 73 75 70 70 6f 72 74 73 20 69 6e |SCK..supports in| 000000e0 74 65 72 61 63 74 69 76 65 20 68 65 6c 70 2c 20 |teractive help, | 000000f0 79 6f 75 20 63 61 6e 20 74 72 79 20 74 6f 20 75 |you can try to u| 00000100 73 65 20 69 74 20 6f 76 65 72 20 74 68 65 0a 27 |se it over the.'| 00000110 53 74 61 74 69 73 74 69 63 73 27 20 77 69 6e 64 |Statistics' wind| 00000120 6f 77 20 69 6e 73 74 65 61 64 20 6f 66 20 72 65 |ow instead of re| 00000130 61 64 69 6e 67 20 74 68 69 73 20 66 69 6c 65 2e |ading this file.| 00000140 0a 0a 0a 54 68 65 20 76 61 6c 75 65 20 70 72 69 |...The value pri| 00000150 6e 74 65 64 20 62 65 6c 6f 77 20 61 72 65 20 6a |nted below are j| 00000160 75 73 74 20 61 6e 20 65 78 61 6d 70 6c 65 20 28 |ust an example (| 00000170 61 63 74 75 61 6c 6c 79 20 74 68 65 79 20 61 72 |actually they ar| 00000180 65 20 74 61 6b 65 6e 20 66 72 6f 6d 20 6d 79 0a |e taken from my.| 00000190 38 34 4d 62 20 48 61 72 64 44 69 73 63 2e 2e 2e |84Mb HardDisc...| 000001a0 29 2e 0a 0a 2d 20 4e 75 6d 62 65 72 20 6f 66 20 |)...- Number of | 000001b0 73 68 61 72 65 64 20 66 72 61 67 6d 65 6e 74 73 |shared fragments| 000001c0 3a 20 31 37 32 30 20 28 37 33 38 20 63 6f 6e 74 |: 1720 (738 cont| 000001d0 61 69 6e 73 20 61 20 64 69 72 65 63 74 6f 72 79 |ains a directory| 000001e0 29 0a 20 20 54 68 69 73 20 69 73 20 74 68 65 20 |). This is the | 000001f0 6e 75 6d 62 65 72 20 6f 66 20 74 68 65 20 6d 61 |number of the ma| 00000200 70 20 62 6c 6f 63 6b 73 20 28 73 65 65 20 4d 61 |p blocks (see Ma| 00000210 70 45 78 70 6c 20 66 69 6c 65 29 20 74 68 61 74 |pExpl file) that| 00000220 20 61 72 65 20 61 63 74 75 61 6c 6c 79 0a 20 20 | are actually. | 00000230 6f 63 63 75 70 69 65 64 20 62 79 20 73 6d 61 6c |occupied by smal| 00000240 6c 20 66 69 6c 65 73 20 74 68 61 74 20 63 61 6e |l files that can| 00000250 20 73 68 61 72 65 20 73 65 63 74 6f 72 73 20 69 | share sectors i| 00000260 6e 73 74 65 61 64 20 6f 66 20 61 20 77 68 6f 6c |nstead of a whol| 00000270 65 20 66 69 6c 65 2e 0a 0a 2d 20 57 61 73 74 65 |e file...- Waste| 00000280 64 20 73 65 63 74 6f 72 73 20 69 6e 20 73 68 61 |d sectors in sha| 00000290 72 65 64 20 66 72 61 67 6d 65 6e 74 73 3a 20 33 |red fragments: 3| 000002a0 39 36 34 20 28 32 30 32 39 35 36 38 20 62 79 74 |964 (2029568 byt| 000002b0 65 73 20 28 32 2e 33 25 29 29 0a 20 20 54 68 69 |es (2.3%)). Thi| 000002c0 73 20 69 73 20 74 68 65 20 6e 75 6d 62 65 72 20 |s is the number | 000002d0 6f 66 20 73 65 63 74 6f 72 73 20 74 68 61 74 20 |of sectors that | 000002e0 61 72 65 20 77 61 73 74 65 64 20 62 65 63 61 75 |are wasted becau| 000002f0 73 65 20 74 68 65 20 73 6d 61 6c 6c 20 66 69 6c |se the small fil| 00000300 65 73 20 74 68 61 74 0a 20 20 63 6f 75 6c 64 20 |es that. could | 00000310 73 68 61 72 65 20 73 65 63 74 6f 72 73 20 28 73 |share sectors (s| 00000320 65 65 20 61 62 6f 76 65 29 20 61 63 74 75 61 6c |ee above) actual| 00000330 6c 79 20 64 6f 6e 27 74 20 73 68 61 72 65 20 61 |ly don't share a| 00000340 6c 6c 20 74 68 65 20 70 6f 73 73 69 62 6c 65 0a |ll the possible.| 00000350 20 20 73 65 63 74 6f 72 73 20 77 69 74 68 20 6f | sectors with o| 00000360 74 68 65 72 20 73 6d 61 6c 6c 20 66 69 6c 65 73 |ther small files| 00000370 20 28 73 65 65 20 4d 61 70 45 78 70 6c 20 61 67 | (see MapExpl ag| 00000380 61 69 6e 29 2e 20 41 73 20 79 6f 75 20 63 61 6e |ain). As you can| 00000390 20 73 65 65 20 74 68 65 72 65 0a 20 20 61 72 65 | see there. are| 000003a0 20 71 75 69 74 65 20 61 20 6c 6f 74 20 6f 66 20 | quite a lot of | 000003b0 77 61 73 74 65 64 20 73 65 63 74 6f 72 73 20 6f |wasted sectors o| 000003c0 6e 20 6d 79 20 48 44 21 0a 0a 2d 20 44 69 72 65 |n my HD!..- Dire| 000003d0 63 74 6f 72 69 65 73 20 62 69 67 67 65 72 20 74 |ctories bigger t| 000003e0 68 61 6e 20 74 68 65 20 6d 69 6e 69 6d 75 6d 20 |han the minimum | 000003f0 73 69 7a 65 3a 20 31 35 35 0a 20 20 46 6f 72 20 |size: 155. For | 00000400 73 6f 6d 65 20 6f 62 73 63 75 72 65 20 72 65 61 |some obscure rea| 00000410 73 6f 6e 20 73 6f 6d 65 20 64 69 72 65 63 74 6f |son some directo| 00000420 72 69 65 73 20 61 72 65 20 62 69 67 67 65 72 20 |ries are bigger | 00000430 74 68 61 6e 20 74 68 65 69 72 20 6e 61 74 75 72 |than their natur| 00000440 61 6c 20 73 69 7a 65 3a 0a 20 20 74 68 65 20 65 |al size:. the e| 00000450 78 74 72 61 20 73 69 7a 65 20 63 61 6e 20 62 65 |xtra size can be| 00000460 20 73 68 61 72 65 64 20 77 69 74 68 20 6f 74 68 | shared with oth| 00000470 65 72 20 66 69 6c 65 73 2c 20 73 6f 20 79 6f 75 |er files, so you| 00000480 20 64 6f 6e 27 74 20 68 61 76 65 20 74 6f 20 77 | don't have to w| 00000490 6f 72 72 79 0a 20 20 61 62 6f 75 74 20 74 68 69 |orry. about thi| 000004a0 73 2e 0a 0a 2d 20 46 72 61 67 6d 65 6e 74 65 64 |s...- Fragmented| 000004b0 20 66 69 6c 65 73 3a 20 31 33 20 28 38 20 6d 75 | files: 13 (8 mu| 000004c0 73 74 20 62 65 20 66 72 61 67 6d 65 6e 74 65 64 |st be fragmented| 000004d0 29 0a 20 20 54 68 69 73 20 69 73 20 74 68 65 20 |). This is the | 000004e0 6e 75 6d 62 65 72 20 6f 66 20 66 69 6c 65 73 20 |number of files | 000004f0 74 68 61 74 20 61 72 65 20 66 72 61 67 6d 65 6e |that are fragmen| 00000500 74 65 64 20 6f 76 65 72 20 73 65 76 65 72 61 6c |ted over several| 00000510 20 6d 61 70 20 63 68 75 6e 6b 73 2e 20 4f 6e 0a | map chunks. On.| 00000520 20 20 6d 79 20 48 44 20 6f 6e 6c 79 20 31 33 20 | my HD only 13 | 00000530 6f 66 20 34 37 31 36 20 66 69 6c 65 73 20 61 72 |of 4716 files ar| 00000540 65 20 66 72 61 67 6d 65 6e 74 65 64 3a 20 52 49 |e fragmented: RI| 00000550 53 43 20 4f 53 20 73 65 65 6d 73 20 74 6f 20 62 |SC OS seems to b| 00000560 65 20 76 65 72 79 20 67 6f 6f 64 0a 20 20 61 74 |e very good. at| 00000570 20 6b 65 65 70 69 6e 67 20 66 69 6c 65 73 20 69 | keeping files i| 00000580 6e 20 61 20 73 69 6e 67 6c 65 20 63 68 75 6e 6b |n a single chunk| 00000590 21 20 4d 6f 72 65 6f 76 65 72 2c 20 38 20 6f 66 |! Moreover, 8 of| 000005a0 20 74 68 65 73 65 20 31 33 20 66 69 6c 65 73 20 | these 13 files | 000005b0 6d 75 73 74 20 62 65 20 0a 20 20 66 72 61 67 6d |must be . fragm| 000005c0 65 6e 74 65 64 20 62 65 63 61 75 73 65 20 74 68 |ented because th| 000005d0 65 79 20 61 72 65 20 62 69 67 67 65 72 20 74 68 |ey are bigger th| 000005e0 61 6e 20 74 68 65 20 73 69 7a 65 20 6f 66 20 61 |an the size of a| 000005f0 20 73 69 6e 67 6c 65 20 7a 6f 6e 65 2e 0a 0a 2d | single zone...-| 00000600 20 54 6f 74 61 6c 20 73 70 61 63 65 20 61 6c 6c | Total space all| 00000610 6f 63 61 74 65 64 20 69 6e 20 6d 61 70 20 66 6f |ocated in map fo| 00000620 72 20 66 69 6c 65 73 3a 20 37 33 38 36 35 37 32 |r files: 7386572| 00000630 38 20 62 79 74 65 73 20 28 38 33 2e 39 25 29 0a |8 bytes (83.9%).| 00000640 20 20 54 68 69 73 20 69 73 20 74 68 65 20 61 6d | This is the am| 00000650 6f 75 6e 74 20 6f 66 20 64 69 73 63 20 73 70 61 |ount of disc spa| 00000660 63 65 20 74 68 61 74 20 69 73 20 61 6c 6c 6f 63 |ce that is alloc| 00000670 61 74 65 64 20 74 6f 20 66 69 6c 65 73 20 28 69 |ated to files (i| 00000680 6e 63 6c 75 64 69 6e 67 0a 20 20 64 69 72 65 63 |ncluding. direc| 00000690 74 6f 72 69 65 73 29 2e 20 54 68 65 20 73 70 61 |tories). The spa| 000006a0 63 65 20 77 61 73 74 65 64 20 62 65 63 61 75 73 |ce wasted becaus| 000006b0 65 20 6f 66 20 73 68 61 72 65 64 20 6d 61 70 20 |e of shared map | 000006c0 63 68 75 6e 6b 73 20 69 73 20 4e 4f 54 0a 20 20 |chunks is NOT. | 000006d0 63 6f 75 6e 74 65 64 20 68 65 72 65 20 28 73 69 |counted here (si| 000006e0 6e 63 65 20 69 74 20 63 61 6e 20 73 74 69 6c 6c |nce it can still| 000006f0 20 62 65 20 75 73 65 64 20 62 79 20 6f 74 68 65 | be used by othe| 00000700 72 20 66 69 6c 65 73 29 2e 0a 0a 2d 20 54 6f 74 |r files)...- Tot| 00000710 61 6c 20 73 70 61 63 65 20 75 73 65 64 20 62 79 |al space used by| 00000720 20 66 69 6c 65 73 3a 20 37 32 36 30 34 34 30 36 | files: 72604406| 00000730 20 62 79 74 65 73 20 28 38 32 2e 34 25 29 0a 20 | bytes (82.4%). | 00000740 20 54 68 69 73 20 69 73 20 74 68 65 20 72 65 61 | This is the rea| 00000750 6c 20 73 70 61 63 65 20 75 73 65 64 20 62 79 20 |l space used by | 00000760 66 69 6c 65 73 20 61 6e 64 20 64 69 72 65 63 74 |files and direct| 00000770 6f 72 69 65 73 2e 20 54 68 69 73 20 69 73 20 6c |ories. This is l| 00000780 65 73 73 20 74 68 61 6e 0a 20 20 74 68 65 20 6f |ess than. the o| 00000790 6e 65 20 61 6c 6c 6f 63 61 74 65 64 20 69 6e 20 |ne allocated in | 000007a0 74 68 65 20 62 65 63 61 75 73 65 20 6f 66 20 74 |the because of t| 000007b0 68 65 20 73 65 63 74 6f 72 20 62 6f 75 6e 64 61 |he sector bounda| 000007c0 72 69 65 73 2e 0a 0a 2d 20 53 70 61 63 65 20 77 |ries...- Space w| 000007d0 61 73 74 65 64 20 62 65 63 61 75 73 65 20 6f 66 |asted because of| 000007e0 20 73 65 63 74 6f 72 20 62 6f 75 6e 64 61 72 69 | sector boundari| 000007f0 65 73 3a 20 31 32 36 31 33 32 32 20 62 79 74 65 |es: 1261322 byte| 00000800 73 20 28 31 2e 34 25 29 0a 20 20 54 68 69 73 20 |s (1.4%). This | 00000810 69 73 20 74 68 65 20 64 69 66 66 65 72 65 6e 63 |is the differenc| 00000820 65 20 62 65 74 77 65 65 6e 20 74 68 65 20 74 77 |e between the tw| 00000830 6f 20 70 72 65 76 69 6f 75 73 20 76 61 6c 75 65 |o previous value| 00000840 73 20 28 69 65 2e 20 73 70 61 63 65 20 61 6c 6c |s (ie. space all| 00000850 6f 63 61 74 65 64 0a 20 20 66 6f 72 20 66 69 6c |ocated. for fil| 00000860 65 73 20 2d 20 73 70 61 63 65 20 61 63 74 75 61 |es - space actua| 00000870 6c 6c 79 20 75 73 65 64 20 62 79 20 66 69 6c 65 |lly used by file| 00000880 73 29 2e 20 0a 0a 2d 20 44 65 66 65 63 74 73 3a |s). ..- Defects:| 00000890 20 30 20 28 30 20 62 79 74 65 73 20 28 30 2e 30 | 0 (0 bytes (0.0| 000008a0 25 29 29 0a 20 20 4e 6f 20 63 6f 6d 6d 65 6e 74 |%)). No comment| 000008b0 73 20 6e 65 65 64 65 64 2e 2e 2e 0a 0a 2d 20 53 |s needed.....- S| 000008c0 70 61 63 65 20 75 73 65 64 20 66 6f 72 20 6d 61 |pace used for ma| 000008d0 70 2f 72 6f 6f 74 2f 62 6f 6f 74 62 6c 6f 63 6b |p/root/bootblock| 000008e0 3a 20 39 33 31 38 34 20 62 79 74 65 73 20 28 30 |: 93184 bytes (0| 000008f0 2e 31 25 29 0a 20 20 4a 75 73 74 20 77 68 61 74 |.1%). Just what| 00000900 20 69 74 20 73 61 79 73 20 74 6f 20 62 65 2e 2e | it says to be..| 00000910 2e 0a 0a 2d 20 46 69 6c 65 73 3a 20 34 37 31 36 |...- Files: 4716| 00000920 20 28 37 31 30 39 32 39 38 32 20 62 79 74 65 73 | (71092982 bytes| 00000930 20 28 38 30 2e 37 25 29 29 0a 20 20 4e 75 6d 62 | (80.7%)). Numb| 00000940 65 72 20 6f 66 20 66 69 6c 65 73 20 61 6e 64 20 |er of files and | 00000950 73 70 61 63 65 20 75 73 65 64 20 6f 6e 6c 79 20 |space used only | 00000960 62 79 20 74 68 65 6d 20 28 69 65 2e 20 6e 6f 20 |by them (ie. no | 00000970 64 69 72 65 63 74 6f 72 69 65 73 29 2e 20 54 68 |directories). Th| 00000980 69 73 20 69 73 0a 20 20 74 68 65 20 73 61 6d 65 |is is. the same| 00000990 20 72 65 73 75 6c 74 20 74 68 61 74 20 63 61 6e | result that can| 000009a0 20 62 65 20 67 69 76 65 6e 20 62 79 20 27 43 6f | be given by 'Co| 000009b0 75 6e 74 27 69 6e 67 20 74 68 65 20 77 68 6f 6c |unt'ing the whol| 000009c0 65 20 64 69 73 63 2e 0a 0a 2d 20 44 69 72 65 63 |e disc...- Direc| 000009d0 74 6f 72 69 65 73 3a 20 37 33 38 20 28 31 35 31 |tories: 738 (151| 000009e0 31 34 32 34 20 62 79 74 65 73 20 28 31 2e 37 25 |1424 bytes (1.7%| 000009f0 29 29 0a 20 20 4e 75 6d 62 65 72 20 6f 66 20 64 |)). Number of d| 00000a00 69 72 65 63 74 6f 72 69 65 73 20 61 6e 64 20 73 |irectories and s| 00000a10 70 61 63 65 20 75 73 65 64 20 6f 6e 6c 79 20 62 |pace used only b| 00000a20 79 20 74 68 65 6d 20 28 73 68 6f 75 6c 64 20 62 |y them (should b| 00000a30 65 20 6e 75 6d 62 65 72 20 6f 66 20 64 69 72 73 |e number of dirs| 00000a40 0a 20 20 6d 75 6c 74 69 70 6c 69 65 64 20 62 79 |. multiplied by| 00000a50 20 32 30 34 38 29 2e 0a 0a 2d 20 54 6f 74 61 6c | 2048)...- Total| 00000a60 20 75 73 65 64 20 73 70 61 63 65 3a 20 37 35 39 | used space: 759| 00000a70 38 38 34 38 30 20 62 79 74 65 73 20 28 38 36 2e |88480 bytes (86.| 00000a80 33 25 29 0a 2d 20 54 6f 74 61 6c 20 66 72 65 65 |3%).- Total free| 00000a90 20 73 70 61 63 65 3a 20 31 32 30 39 31 39 30 34 | space: 12091904| 00000aa0 20 62 79 74 65 73 20 28 31 33 2e 37 25 29 0a 20 | bytes (13.7%). | 00000ab0 20 54 68 65 20 73 61 6d 65 20 67 69 76 65 6e 20 | The same given | 00000ac0 62 79 20 46 72 65 65 2e 0a 0a |by Free...| 00000aca
.