Date: Thu, 17 Feb 2000 12:18:13 +0300 From: "Isaev M. Alex" <sleepy@spylog.ru> To: AIC7xxx@FreeBSD.ORG Subject: I have a trouble wich SCSI disks (AIC7896 adapter) Message-ID: <00021713022701.03551@sleepy.intra.virus.ru>
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Hello!
I have a trouble wich SCSI disk (AIC 7896, Kernel 2.2.14-SMP).
If i write to disk use programm "test.c", i have
a very horrible statistics.
What this and can i fix it?
-cut-
vmstat -n 1
BEFORE RUNNING
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
0 12 1 3476 2732 139960 66720 0 0 213 48 190 280 7 5 88
0 8 0 3476 3356 136008 70340 0 0 950 211 752 2152 15 26 59
0 4 0 3476 2936 135492 71108 0 0 252 0 415 2265 25 40 35
0 6 0 3476 4000 131572 73908 0 0 749 107 423 2840 27 46 27
0 4 1 3476 1648 131332 76148 0 0 610 2 394 1703 24 45 31
2 5 0 3476 1232 127136 81996 0 0 1572 0 479 2361 21 53 26
0 5 0 3476 2152 121744 86544 0 0 1447 179 528 1370 17 36 47
0 7 0 3476 2936 120852 87424 0 0 319 23 428 2065 21 31 48
1 3 0 3476 1676 120472 88084 0 0 186 256 436 2253 19 38 43
0 4 1 3476 1124 119960 89980 0 0 606 96 465 2659 29 29 42
0 7 2 3476 2660 111652 96816 0 0 1705 246 837 1972 25 14 62
0 1 0 3476 1392 109476 100300 0 0 889 56 501 1021 22 17 61
1 3 0 3476 2048 107428 102008 0 0 490 49 492 2072 17 26 57
1 4 0 3476 3128 102952 105184 0 0 907 93 471 1558 13 22 65
0 3 0 3476 2744 92204 116460 0 0 2868 65 805 1532 29 16 55
2 6 0 3476 2432 84028 124116 100 0 1924 57 733 2081 29 16 55
1 2 0 3476 3128 79868 127380 0 0 888 174 547 1935 18 14 69
0 4 0 3476 2152 75648 132600 0 0 1378 65 672 1705 22 13 64
1 2 0 3476 2344 73600 134484 0 0 545 65 567 2253 15 26 59
0 4 0 3476 2152 75648 132600 0 0 1378 65 672 1705 22 13 64
1 2 0 3476 2344 73600 134484 0 0 545 65 567 2253 15 26 59
1 3 0 3476 2696 70016 137484 0 0 814 101 561 1845 19 16 65
0 4 0 3476 2496 59660 147384 0 0 2540 134 585 1258 26 20 54
1 5 0 3476 1396 53260 154968 0 0 1919 29 760 1400 14 21 65
AFTER RUNNING
0 5 1 3476 2264 51084 156232 0 8 322 2644 497 1059 2 31 67
0 5 2 3612 1488 51080 157144 0 128 194 2004 423 792 1 10 89
0 4 2 3612 2484 56876 150692 0 0 10 2029 296 328 2 36 62
0 4 3 3612 3172 68168 138720 0 0 1 2049 247 269 0 11 89
0 4 3 3612 1136 80496 128432 0 0 0 2080 241 264 1 12 87
0 4 2 3612 1112 88380 120572 0 0 1 1743 242 235 1 8 91
0 4 2 3728 3080 98384 108720 0 116 4 2189 259 182 0 15 85
0 4 2 3728 3096 110252 96836 0 0 0 2064 252 258 1 11 88
0 4 2 3728 3140 116160 90888 0 0 0 2064 257 291 1 8 91
0 4 2 3728 3092 122904 84084 0 0 0 2042 244 264 0 9 90
0 4 1 3728 3188 130936 75756 0 0 8 2097 285 200 2 13 86
0 3 2 3728 3140 133256 73396 0 0 0 2005 239 264 0 8 91
0 3 2 3728 3156 134752 71848 0 0 0 2064 240 263 0 10 90
0 3 2 3728 3176 135844 70708 0 0 0 2004 249 264 1 9 90
0 3 2 3728 2468 140464 66732 0 0 0 2000 249 280 0 10 90
0 3 2 3728 2376 156388 50520 0 0 0 2183 249 278 0 15 84
0 3 2 3728 2444 159428 47340 0 0 0 817 275 316 0 5 94
0 26 1 3728 2880 168044 38020 0 0 86 1708 336 524 2 11 86
0 16 1 3728 1704 169956 36988 0 0 1574 1500 547 746 2 9 89
0 4 2 3856 3192 194668 10544 0 128 169 3117 413 383 1 30 69
0 4 2 3856 3196 194720 10484 0 0 0 2080 251 266 0 9 91
0 4 2 3856 3160 194772 10468 0 0 0 2080 241 275 1 8 91
0 4 2 3856 3136 194804 10460 0 0 0 2048 251 260 1 7 91
0 4 2 3856 3100 194856 10444 0 0 0 2048 241 267 1 8 90
-cut-
disks:
(scsi0) <Adaptec AIC-7896/7 Ultra2 SCSI host adapter> found at PCI 12/0
(scsi0) Wide Channel A, SCSI ID=7, 32/255 SCBs
(scsi0) Downloading sequencer code... 385 instructions downloaded
(scsi1) <Adaptec AIC-7896/7 Ultra2 SCSI host adapter> found at PCI 12/1
(scsi1) Wide Channel B, SCSI ID=7, 32/255 SCBs
(scsi1) Downloading sequencer code... 385 instructions downloaded
scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.21/3.2.4
<Adaptec AIC-7896/7 Ultra2 SCSI host adapter>
scsi1 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.21/3.2.4
<Adaptec AIC-7896/7 Ultra2 SCSI host adapter>
scsi : 2 hosts.
(scsi0:0:0:0) Synchronous at 80.0 Mbyte/sec, offset 31.
Vendor: IBM Model: DMVS36V Rev: 0250
Type: Direct-Access ANSI SCSI revision: 03
Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
(scsi0:0:1:0) Synchronous at 80.0 Mbyte/sec, offset 31.
Vendor: IBM Model: DMVS36V Rev: 0100
Type: Direct-Access ANSI SCSI revision: 03
Detected scsi disk sdb at scsi0, channel 0, id 1, lun 0
scsi : detected 2 SCSI disks total.
SCSI device sda: hdwr sector= 512 bytes. Sectors= 71687340 [35003 MB] [35.0 GB]
SCSI device sdb: hdwr sector= 512 bytes. Sectors= 71687340 [35003 MB] [35.0 GB]
--test.c---
#include <stdio.h>
#define BLOCK (1024*1024)
#define COUNT (1024)
main()
{
FILE * f;
char buffer[BLOCK];
int i;
f=fopen("test","wb");
if (f==NULL)
{
puts("Error !");
return -1;
}
for (i=0;i<COUNT;i++)
fwrite(buffer,BLOCK,1,f);
fclose(f);
return 0;
}
---test.c---
--
Isaev M. Alex
System Administrator
www.spylog.com
sleepy@spylog.com
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