Date: Tue, 16 Nov 1999 16:54:33 -0500 From: Simon Shapiro <shimon@simon-shapiro.org> To: freebsd-arch@freebsd.org Subject: Strange Behavior (was I/O Performance) Message-ID: <3831D299.E4BA3755@simon-shapiro.org>
next in thread | raw e-mail | index | archive | help
[-- Attachment #1 --]
Things have changed;
Moved the test environment from a Dell PowerEdge 1300/600
with 1GB RAM to an older ASUS MB with a P-II/300 and
256MB of RAM.
* Strange Q corruption is not reproducible anymore.
* Running a filesystem against it crashes the system;
Processes simply stop, will not respond to kill -9.
Attached are fdisk and disklabel for the device,
as well as a debugger ps.
For the life of me I cannot see the OSM doing anything
evil now.
It will really be nice to have this level of I/O available.
I need help figuring it out.
--
Sincerely Yours, Shimon@Simon-Shapiro.ORG
404.664.6401
Simon Shapiro
Unwritten code has no bugs and executes at twice the speed of mouth
[-- Attachment #2 --]
******* Working on device /dev/ri2o0 *******
parameters extracted from in-core disklabel are:
cylinders=52069 heads=64 sectors/track=32 (2048 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=52069 heads=64 sectors/track=32 (2048 blks/cyl)
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 165,(FreeBSD/NetBSD/386BSD)
start 2048, size 106633216 (52067 Meg), flag 80 (active)
beg: cyl 1/ sector 1/ head 0;
end: cyl 867/ sector 32/ head 63
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>
[-- Attachment #3 --]
# /dev/ri2o0s1c:
type: unknown
disk: i2o6xDEC
label: Big Zero
flags:
bytes/sector: 512
sectors/track: 2048
tracks/cylinder: 1
sectors/cylinder: 2048
cylinders: 52067
sectors/unit: 106633216
rpm: 10000
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # milliseconds
track-to-track seek: 0 # milliseconds
drivedata: 0
3 partitions:
# size offset fstype [fsize bsize bps/cpg]
a: 106631168 2048 4.2BSD 2048 16384 16 # (Cyl. 1 - 52066)
c: 106633216 0 unused 1024 8192 # (Cyl. 0 - 52066)
[-- Attachment #4 --]
db> ps
pid proc addr uid ppid pgrp flag stat wmesg wchan cmd
30729 fbc09a20 fbd52000 0 30728 30729 000014 3 inode d4c0fa00 cron
30728 fbd7eaa0 fbe0b000 0 193 193 000004 3 ppwait fbd7eaa0 cron
30727 fbd7ec00 fbe08000 0 190 190 000004 3 newbuf c0351724 inetd
30726 fbd7f180 fbdf7000 0 30725 30726 000014 3 newbuf c0351724 cron
30725 fbd80a40 fbd8e000 0 193 193 000004 3 ppwait fbd80a40 cron
30724 fbd7dce0 fbe44000 0 30712 344 004006 3 newbuf c0351724 ranlib
30712 fbd80ba0 fbd85000 0 30513 344 004086 3 wait fbd80ba0 sh
30513 fbd7ff40 fbda7000 0 22488 344 004086 3 select c0351474 make
22488 fbd7eec0 fbdf9000 0 22485 344 004086 3 wait fbd7eec0 sh
22485 fbc09ce0 fbd49000 0 355 344 004086 3 select c0351474 make
442 fbd80620 fbd94000 0 268 442 004006 3 newbuf c0351724 tail
355 fbc09e40 fbd46000 0 352 344 004086 3 wait fbc09e40 sh
352 fbc09fa0 fbca2000 0 351 344 004086 3 select c0351474 make
351 fbc0a100 fbc95000 0 348 344 004086 3 wait fbc0a100 sh
348 fbc0a3c0 fbc8d000 0 347 344 004086 3 select c0351474 make
347 fbc0a520 fbc89000 0 344 344 004086 3 wait fbc0a520 sh
344 fbc0a260 fbc91000 0 268 344 004086 3 select c0351474 make
269 fbc0a680 fbc7b000 0 1 1 004084 3 siodcd c034ee44 getty
268 fbc0a7e0 fbc77000 0 1 268 004086 3 wait fbc0a7e0 bash
267 fbc0a940 fbc74000 0 1 267 004086 3 ttyin c034c7d4 getty
266 fbc0aaa0 fbc71000 0 1 266 004086 3 ttyin c034c6e0 getty
265 fbc0ac00 fbc6e000 0 1 265 004086 3 ttyin c034c5ec getty
264 fbc0c780 fbc1f000 0 1 264 004086 3 ttyin c034c4f8 getty
263 fbc0b020 fbc63000 0 1 263 004086 3 ttyin c034c404 getty
262 fbc0aec0 fbc66000 0 1 262 004086 3 ttyin c034c310 getty
261 fbc0b180 fbc5f000 0 1 261 004086 3 ttyin c034c21c getty
260 fbc0c8e0 fbc1c000 0 1 260 004006 3 newbuf c0351724 getty
239 fbc0ad60 fbc69000 0 1 239 000084 3 select c0351474 sshd2
193 fbc0b2e0 fbc5c000 0 1 193 000084 3 nanslp c0317678 cron
190 fbc0b9c0 fbc4b000 0 1 190 000084 3 select c0351474 inetd
166 fbc0b440 fbc58000 0 1 161 000084 3 nfsidl c0354394 nfsiod
165 fbc0b5a0 fbc54000 0 1 161 000084 3 nfsidl c0354390 nfsiod
164 fbc0b700 fbc51000 0 1 161 000084 3 nfsidl c035438c nfsiod
163 fbc0b860 fbc4e000 0 1 161 000084 3 nfsidl c0354388 nfsiod
158 fbc0bb20 fbc47000 0 1 158 000084 3 select c0351474 rpc.statd
155 fbc0bc80 fbc44000 0 150 150 000084 3 nfsd d4b1a200 nfsd
154 fbc0bde0 fbc41000 0 150 150 000084 3 nfsd d4bfde00 nfsd
153 fbc0bf40 fbc3e000 0 150 150 000084 3 nfsd d4b1a400 nfsd
152 fbc0c0a0 fbc3b000 0 150 150 000084 3 nfsd d4b1a600 nfsd
150 fbc0c200 fbc38000 0 1 150 000084 3 accept f6003ad6 nfsd
147 fbc0c360 fbc35000 0 1 147 000084 3 select c0351474 mountd
136 fbc0c4c0 fbc32000 1 1 136 000184 3 select c0351474 portmap
127 fbc0c620 fbc29000 0 1 127 000004 3 newbuf c0351724 syslogd
4 fbc0ca40 fbc17000 0 0 0 000204 3 inode d4cad600 syncer
3 fbc0cba0 fbc15000 0 0 0 000204 3 psleep c0339174 vmdaemon
2 fbc0cd00 fbc13000 0 0 0 000204 3 psleep c03057c0 pagedaemon
1 fbc0ce60 fbc11000 0 0 1 004084 3 wait fbc0ce60 init
0 c035075c c03bd000 0 0 0 000204 3 sched c035075c swapper
db>
db> call boot
syncing disks...
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0xb8
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc016ddbb
stack pointer = 0x10:0xc02d4910
frame pointer = 0x10:0xc02d4924
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = Idle
interrupt mask = tty bio
kernel: type 12 trap, code=0
Stopped at Debugger+0x37: movl $0,in_Debugger
db>
db> call boot
dpt0: Shutting down (mode 0) HBA. Please wait...
dpt0: Controller was warned of shutdown and is now disabled
I2O: Shutting down (mode 0 for 0). Please wait...
i2o0: Controller should be warned of shutdown and should be disabled here...
Rebooting...
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3831D299.E4BA3755>