Dirty LRU exceeding the LRU_MAX of 2%
On IDS 7.30.UC6/AIX 4.3.2, the poster saw LRU queues running well above the 2% LRU_MAX_DIRTY threshold while onstat -F showed all 24 page cleaners idle. Two suggestions came back: Art Kagel noted that without KAIO enabled, having only 2 AIO VPs would bottleneck writes; Andrew Lawrenson pointed to Defect 115741, a bug where the page-cleaner wakeup code fails and dirty queues grow past LRU_MAX_DIRTY (he saw 2-minute checkpoints on NT 7.30), which upgrading to 7.31 fixed for him. The original poster never confirmed which applied, so no resolution is recorded.
Auto-generated by DrWatson from the posts below — may be imperfect; read the full thread.
Here is what I am seeing. In onstat -R the dirty q's are over 2% dirty.
onstat -F shows all the flushers as Idle.
I know I have seen this in the post but cannot find it in search.
Attached.
onstat -R output
onstat -F outputonconfig output
IDS 7.30.UC6
AIX 4.3.2
4CPU
512MB
Informix Dynamic Server Version 7.30.UC6 -- On-Line -- Up 00:28:33 --
141568 Kbytes
24 buffer LRU queue pairs priority levels
# f/m pair total % of length LOW MED_LOW MED_HIGH HIGH
0 f 825 96.8% 799 1 304 494 0
1 m 3.2% 26 0 8 18 0
2 f 821 99.0% 813 0 344 469 0
3 M 1.0% 8 0 0 8 0
4 f 832 95.0% 790 0 294 496 0
5 m 5.0% 42 0 7 35 0
6 f 832 96.4% 802 0 271 531 0
7 m 3.6% 30 0 11 19 0
8 f 829 99.0% 821 0 272 549 0
9 M 1.0% 8 0 0 8 0
10 f 834 95.3% 795 1 318 476 0
11 m 4.7% 39 0 13 26 0
12 f 837 97.3% 814 0 283 531 0
13 m 2.7% 23 0 7 16 0
14 f 843 96.4% 813 0 343 470 0
15 m 3.6% 30 0 11 19 0
16 f 825 95.4% 787 0 313 474 0
17 m 4.6% 38 0 18 20 0
18 f 820 95.1% 780 0 299 481 0
19 m 4.9% 40 0 13 27 0
20 f 827 94.7% 783 0 282 501 0
21 m 5.3% 44 0 10 34 0
22 F 826 98.7% 815 0 330 485 0
23 M 1.3% 11 0 2 9 0
24 f 838 97.4% 816 0 368 448 0
25 m 2.6% 22 0 4 18 0
26 f 818 97.1% 794 0 329 465 0
27 m 2.9% 24 0 7 17 0
28 f 832 98.7% 821 0 307 514 0
29 m 1.3% 11 0 2 9 0
30 f 832 97.5% 811 1 367 443 0
31 m 2.5% 21 0 7 14 0
32 f 836 99.0% 828 0 312 516 0
33 M 1.0% 8 0 0 8 0
34 f 827 98.9% 818 0 335 483 0
35 m 1.1% 9 0 1 8 0
36 f 824 99.0% 816 1 300 515 0
37 M 1.0% 8 0 0 8 0
38 f 839 95.5% 801 0 318 483 0
39 m 4.5% 38 0 12 26 0
40 f 844 97.6% 824 0 356 468 0
41 m 2.4% 20 0 9 11 0
42 f 809 98.8% 799 0 314 485 0
43 M 1.2% 10 0 0 10 0
44 f 825 97.8% 807 0 312 495 0
45 m 2.2% 18 0 4 14 0
46 f 815 99.0% 807 0 342 465 0
47 M 1.0% 8 0 0 8 0
536 dirty, 19890 queued, 20000 total, 32768 hash buckets, 4096 buffer size
start clean at 2% (of pair total) dirty, or 16 buffs dirty, stop at 1%
onstat -F
Informix Dynamic Server Version 7.30.UC6 -- On-Line -- Up 00:28:38 --141568 Kbytes
Fg Writes LRU Writes Chunk Writes
0 25320 1572
address flusher state data
400404c8 0 I 0 = 0X0
4004097c 1 I 0 = 0X0
40040e30 2 I 0 = 0X0
400412e4 3 I 0 = 0X0
40041798 4 I 0 = 0X0
40041c4c 5 I 0 = 0X0
40042100 6 I 0 = 0X0
400425b4 7 I 0 = 0X0
40042a68 8 I 0 = 0X0
40042f1c 9 I 0 = 0X0
400433d0 10 I 0 = 0X0
40043884 11 I 0 = 0X0
40043d38 12 I 0 = 0X0
400441ec 13 I 0 = 0X0
400446a0 14 I 0 = 0X0
40044b54 15 I 0 = 0X0
40045008 16 I 0 = 0X0
400454bc 17 I 0 = 0X0
40045970 18 I 0 = 0X0
40045e24 19 I 0 = 0X0
400462d8 20 I 0 = 0X0
4004678c 21 I 0 = 0X0
40046c40 22 I 0 = 0X0
400470f4 23 I 0 = 0X0
states: Exit Idle Chunk Lru
onconfig
Informix Dynamic Server Version 7.30.UC6 -- On-Line -- Up 00:28:23 --
141568 Kbytes
Configuration File: /az/ifx730/gls/etc/onconfig.glssrv
#**************************************************************************
#
# INFORMIX SOFTWARE, INC.
#
# Title: onconfig.pproazo
# Description: Informix Dynamic Server Configuration Parameters
#
#**************************************************************************
# Root Dbspace Configuration
ROOTNAME rootdbs # Root dbspace nameROOTPATH /dev/rgls_rootdbs01
# Path for device containing root dbspace
ROOTOFFSET 0 # Offset of root dbspace into device
(Kbytes)
ROOTSIZE 64000 # Size of root dbspace (Kbytes)
# Disk Mirroring Configuration Parameters
MIRROR 0 # Mirroring flag (Yes = 1, No = 0)
MIRRORPATH # Path for device containing mirrored root
MIRROROFFSET 0 # Offset into mirrored device (Kbytes)
# Physical Log Configuration
PHYSDBS physdbs # Location (dbspace) of physical log
PHYSFILE 20000 # Physical log file size (Kbytes)
# Logical Log Configuration
LOGFILES 48 # Number of logical log files
LOGSIZE 500 # Logical log size (Kbytes)
# Diagnostics
MSGPATH /az/ifx730/gls/online.glssrv.log # System message log file
path
CONSOLE /dev/console # System console message path
ALARMPROGRAM /az/ifx730/gls/etc/no_log.sh # Alarm program pathSYSALARMPROGRAM /az/ifx730/gls/etc/evidence.sh # System Alarm program path
TBLSPACE_STATS 0
# System Archive Tape Device
TAPEDEV /dev/rmt0 # Tape device path#TAPEDEV /dev/null # Tape device path
TAPEBLK 16 # Tape block size (Kbytes)
TAPESIZE 10240000 # Maximum amoun
If you are not running with KAIO enabled then the problem is that you only
have 2 AIO VPs.
Art S. Kagel
Kernoal.Stephens@AUTOZONE.COM wrote:
>
> Here is what I am seeing. In onstat -R the dirty q's are over 2% dirty.
> onstat -F shows all the flushers as Idle.>
> I know I have seen this in the post but cannot find it in search.
>
> Attached.
> onstat -R output
> onstat -F output> onconfig output
> IDS 7.30.UC6
> AIX 4.3.2
> 4CPU
> 512MB
>
> Informix Dynamic Server Version 7.30.UC6 -- On-Line -- Up 00:28:33 --
> 141568 Kbytes
>
> 24 buffer LRU queue pairs priority levels
> # f/m pair total % of length LOW MED_LOW MED_HIGH HIGH
> 0 f 825 96.8% 799 1 304 494 0
> 1 m 3.2% 26 0 8 18 0
> 2 f 821 99.0% 813 0 344 469 0
> 3 M 1.0% 8 0 0 8 0
> 4 f 832 95.0% 790 0 294 496 0
> 5 m 5.0% 42 0 7 35 0
> 6 f 832 96.4% 802 0 271 531 0
> 7 m 3.6% 30 0 11 19 0
> 8 f 829 99.0% 821 0 272 549 0
> 9 M 1.0% 8 0 0 8 0
> 10 f 834 95.3% 795 1 318 476 0
> 11 m 4.7% 39 0 13 26 0
> 12 f 837 97.3% 814 0 283 531 0
> 13 m 2.7% 23 0 7 16 0
> 14 f 843 96.4% 813 0 343 470 0
> 15 m 3.6% 30 0 11 19 0
> 16 f 825 95.4% 787 0 313 474 0
> 17 m 4.6% 38 0 18 20 0
> 18 f 820 95.1% 780 0 299 481 0
> 19 m 4.9% 40 0 13 27 0
> 20 f 827 94.7% 783 0 282 501 0
> 21 m 5.3% 44 0 10 34 0
> 22 F 826 98.7% 815 0 330 485 0
> 23 M 1.3% 11 0 2 9 0
> 24 f 838 97.4% 816 0 368 448 0
> 25 m 2.6% 22 0 4 18 0
> 26 f 818 97.1% 794 0 329 465 0
> 27 m 2.9% 24 0 7 17 0
> 28 f 832 98.7% 821 0 307 514 0
> 29 m 1.3% 11 0 2 9 0
> 30 f 832 97.5% 811 1 367 443 0
> 31 m 2.5% 21 0 7 14 0
> 32 f 836 99.0% 828 0 312 516 0
> 33 M 1.0% 8 0 0 8 0
> 34 f 827 98.9% 818 0 335 483 0
> 35 m 1.1% 9 0 1 8 0
> 36 f 824 99.0% 816 1 300 515 0
> 37 M 1.0% 8 0 0 8 0
> 38 f 839 95.5% 801 0 318 483 0
> 39 m 4.5% 38 0 12 26 0
> 40 f 844 97.6% 824 0 356 468 0
> 41 m 2.4% 20 0 9 11 0
> 42 f 809 98.8% 799 0 314 485 0
> 43 M 1.2% 10 0 0 10 0
> 44 f 825 97.8% 807 0 312 495 0
> 45 m 2.2% 18 0 4 14 0
> 46 f 815 99.0% 807 0 342 465 0
> 47 M 1.0% 8 0 0 8 0
> 536 dirty, 19890 queued, 20000 total, 32768 hash buckets, 4096 buffer size
> start clean at 2% (of pair total) dirty, or 16 buffs dirty, stop at 1%
>
> onstat -F
> Informix Dynamic Server Version 7.30.UC6 -- On-Line -- Up 00:28:38 --> 141568 Kbytes
>
> Fg Writes LRU Writes Chunk Writes
> 0 25320 1572
>
> address flusher state data
> 400404c8 0 I 0 = 0X0
> 4004097c 1 I 0 = 0X0
> 40040e30 2 I 0 = 0X0
> 400412e4 3 I 0 = 0X0
> 40041798 4 I 0 = 0X0
> 40041c4c 5 I 0 = 0X0
> 40042100 6 I 0 = 0X0
> 400425b4 7 I 0 = 0X0
> 40042a68 8 I 0 = 0X0
> 40042f1c 9 I 0 = 0X0
> 400433d0 10 I 0 = 0X0
> 40043884 11 I 0 = 0X0
> 40043d38 12 I 0 = 0X0
> 400441ec 13 I 0 = 0X0
> 400446a0 14 I 0 = 0X0
> 40044b54 15 I 0 = 0X0
> 40045008 16 I 0 = 0X0
> 400454bc 17 I 0 = 0X0
> 40045970 18 I 0 = 0X0
> 40045e24 19 I 0 = 0X0
> 400462d8 20 I 0 = 0X0
> 4004678c 21 I 0 = 0X0
> 40046c40 22 I 0 = 0X0
> 400470f4 23 I 0 = 0X0
> states: Exit Idle Chunk Lru
>
> onconfig
> Informix Dynamic Server Version 7.30.UC6 -- On-Line -- Up 00:28:23 --
> 141568 Kbytes
>
> Configuration File: /az/ifx730/gls/etc/onconfig.glssrv
> #**************************************************************************
> #
> # INFORMIX SOFTWARE, INC.
> #
> # Title: onconfig.pproazo
> # Description: Informix Dynamic Server Configuration Parameters
> #
> #**************************************************************************
>
> # Root Dbspace Configuration
>
> ROOTNAME rootdbs # Root dbspace name> ROOTPATH /dev/rgls_rootdbs01
> # Path for device containing root dbspace
> ROOTOFFSET 0 # Offset of root dbspace into device
> (Kbytes)
> ROOTSIZE 64000 # Size of root dbspace (Kbytes)>
> # Disk Mirroring Configuration Parameters
>
> MIRROR 0 # Mirroring flag (Yes = 1, No = 0)
> MIRRORPATH # Path for device containing mirrored root
> MIRROROFFSET 0 # Offset into mirrored device (Kbytes)>
> # Physical Log Configuration
>
> PHYSDBS physdbs # Location (dbspace) of physical log
> PHYSFILE 20000 # Physical log file size (Kbytes)>
> # Logical Log Configuration
>
> LOGFILES 48 # Number of logical log files
> LOGSIZE 500 # Logical log size (Kbytes)>
> # Diagnostics
>
> MSGPATH /az/ifx730/gls/online.glssrv.log # System message log file
> path
> CONSOLE /dev/console # System console message
If you are not running with KAIO enabled then the problem is that you only
have 2 AIO VPs.
Art S. Kagel
Kernoal.Stephens@AUTOZONE.COM wrote:
>
> Here is what I am seeing. In onstat -R the dirty q's are over 2% dirty.
> onstat -F shows all the flushers as Idle.>
> I know I have seen this in the post but cannot find it in search.
>
> Attached.
> onstat -R output
> onstat -F output> onconfig output
> IDS 7.30.UC6
> AIX 4.3.2
> 4CPU
> 512MB
>
> Informix Dynamic Server Version 7.30.UC6 -- On-Line -- Up 00:28:33 --
> 141568 Kbytes
>
> 24 buffer LRU queue pairs priority levels
> # f/m pair total % of length LOW MED_LOW MED_HIGH HIGH
> 0 f 825 96.8% 799 1 304 494 0
> 1 m 3.2% 26 0 8 18 0
> 2 f 821 99.0% 813 0 344 469 0
> 3 M 1.0% 8 0 0 8 0
> 4 f 832 95.0% 790 0 294 496 0
> 5 m 5.0% 42 0 7 35 0
> 6 f 832 96.4% 802 0 271 531 0
> 7 m 3.6% 30 0 11 19 0
> 8 f 829 99.0% 821 0 272 549 0
> 9 M 1.0% 8 0 0 8 0
> 10 f 834 95.3% 795 1 318 476 0
> 11 m 4.7% 39 0 13 26 0
> 12 f 837 97.3% 814 0 283 531 0
> 13 m 2.7% 23 0 7 16 0
> 14 f 843 96.4% 813 0 343 470 0
> 15 m 3.6% 30 0 11 19 0
> 16 f 825 95.4% 787 0 313 474 0
> 17 m 4.6% 38 0 18 20 0
> 18 f 820 95.1% 780 0 299 481 0
> 19 m 4.9% 40 0 13 27 0
> 20 f 827 94.7% 783 0 282 501 0
> 21 m 5.3% 44 0 10 34 0
> 22 F 826 98.7% 815 0 330 485 0
> 23 M 1.3% 11 0 2 9 0
> 24 f 838 97.4% 816 0 368 448 0
> 25 m 2.6% 22 0 4 18 0
> 26 f 818 97.1% 794 0 329 465 0
> 27 m 2.9% 24 0 7 17 0
> 28 f 832 98.7% 821 0 307 514 0
> 29 m 1.3% 11 0 2 9 0
> 30 f 832 97.5% 811 1 367 443 0
> 31 m 2.5% 21 0 7 14 0
> 32 f 836 99.0% 828 0 312 516 0
> 33 M 1.0% 8 0 0 8 0
> 34 f 827 98.9% 818 0 335 483 0
> 35 m 1.1% 9 0 1 8 0
> 36 f 824 99.0% 816 1 300 515 0
> 37 M 1.0% 8 0 0 8 0
> 38 f 839 95.5% 801 0 318 483 0
> 39 m 4.5% 38 0 12 26 0
> 40 f 844 97.6% 824 0 356 468 0
> 41 m 2.4% 20 0 9 11 0
> 42 f 809 98.8% 799 0 314 485 0
> 43 M 1.2% 10 0 0 10 0
> 44 f 825 97.8% 807 0 312 495 0
> 45 m 2.2% 18 0 4 14 0
> 46 f 815 99.0% 807 0 342 465 0
> 47 M 1.0% 8 0 0 8 0
> 536 dirty, 19890 queued, 20000 total, 32768 hash buckets, 4096 buffer size
> start clean at 2% (of pair total) dirty, or 16 buffs dirty, stop at 1%
>
> onstat -F
> Informix Dynamic Server Version 7.30.UC6 -- On-Line -- Up 00:28:38 --> 141568 Kbytes
>
> Fg Writes LRU Writes Chunk Writes
> 0 25320 1572
>
> address flusher state data
> 400404c8 0 I 0 = 0X0
> 4004097c 1 I 0 = 0X0
> 40040e30 2 I 0 = 0X0
> 400412e4 3 I 0 = 0X0
> 40041798 4 I 0 = 0X0
> 40041c4c 5 I 0 = 0X0
> 40042100 6 I 0 = 0X0
> 400425b4 7 I 0 = 0X0
> 40042a68 8 I 0 = 0X0
> 40042f1c 9 I 0 = 0X0
> 400433d0 10 I 0 = 0X0
> 40043884 11 I 0 = 0X0
> 40043d38 12 I 0 = 0X0
> 400441ec 13 I 0 = 0X0
> 400446a0 14 I 0 = 0X0
> 40044b54 15 I 0 = 0X0
> 40045008 16 I 0 = 0X0
> 400454bc 17 I 0 = 0X0
> 40045970 18 I 0 = 0X0
> 40045e24 19 I 0 = 0X0
> 400462d8 20 I 0 = 0X0
> 4004678c 21 I 0 = 0X0
> 40046c40 22 I 0 = 0X0
> 400470f4 23 I 0 = 0X0
> states: Exit Idle Chunk Lru
>
> onconfig
> Informix Dynamic Server Version 7.30.UC6 -- On-Line -- Up 00:28:23 --
> 141568 Kbytes
>
> Configuration File: /az/ifx730/gls/etc/onconfig.glssrv
> #**************************************************************************
> #
> # INFORMIX SOFTWARE, INC.
> #
> # Title: onconfig.pproazo
> # Description: Informix Dynamic Server Configuration Parameters
> #
> #**************************************************************************
>
> # Root Dbspace Configuration
>
> ROOTNAME rootdbs # Root dbspace name> ROOTPATH /dev/rgls_rootdbs01
> # Path for device containing root dbspace
> ROOTOFFSET 0 # Offset of root dbspace into device
> (Kbytes)
> ROOTSIZE 64000 # Size of root dbspace (Kbytes)>
> # Disk Mirroring Configuration Parameters
>
> MIRROR 0 # Mirroring flag (Yes = 1, No = 0)
> MIRRORPATH # Path for device containing mirrored root
> MIRROROFFSET 0 # Offset into mirrored device (Kbytes)>
> # Physical Log Configuration
>
> PHYSDBS physdbs # Location (dbspace) of physical log
> PHYSFILE 20000 # Physical log file size (Kbytes)>
> # Logical Log Configuration
>
> LOGFILES 48 # Number of logical log files
> LOGSIZE 500 # Logical log size (Kbytes)>
> # Diagnostics
>
> MSGPATH /az/ifx730/gls/online.glssrv.log # System message log file
> path
> CONSOLE /dev/console # System console message
If you are not running with KAIO enabled then the problem is that you only
have 2 AIO VPs.
Art S. Kagel
Kernoal.Stephens@AUTOZONE.COM wrote:
>
> Here is what I am seeing. In onstat -R the dirty q's are over 2% dirty.
> onstat -F shows all the flushers as Idle.>
> I know I have seen this in the post but cannot find it in search.
>
> Attached.
> onstat -R output
> onstat -F output> onconfig output
> IDS 7.30.UC6
> AIX 4.3.2
> 4CPU
> 512MB
>
> Informix Dynamic Server Version 7.30.UC6 -- On-Line -- Up 00:28:33 --
> 141568 Kbytes
>
> 24 buffer LRU queue pairs priority levels
> # f/m pair total % of length LOW MED_LOW MED_HIGH HIGH
> 0 f 825 96.8% 799 1 304 494 0
> 1 m 3.2% 26 0 8 18 0
> 2 f 821 99.0% 813 0 344 469 0
> 3 M 1.0% 8 0 0 8 0
> 4 f 832 95.0% 790 0 294 496 0
> 5 m 5.0% 42 0 7 35 0
> 6 f 832 96.4% 802 0 271 531 0
> 7 m 3.6% 30 0 11 19 0
> 8 f 829 99.0% 821 0 272 549 0
> 9 M 1.0% 8 0 0 8 0
> 10 f 834 95.3% 795 1 318 476 0
> 11 m 4.7% 39 0 13 26 0
> 12 f 837 97.3% 814 0 283 531 0
> 13 m 2.7% 23 0 7 16 0
> 14 f 843 96.4% 813 0 343 470 0
> 15 m 3.6% 30 0 11 19 0
> 16 f 825 95.4% 787 0 313 474 0
> 17 m 4.6% 38 0 18 20 0
> 18 f 820 95.1% 780 0 299 481 0
> 19 m 4.9% 40 0 13 27 0
> 20 f 827 94.7% 783 0 282 501 0
> 21 m 5.3% 44 0 10 34 0
> 22 F 826 98.7% 815 0 330 485 0
> 23 M 1.3% 11 0 2 9 0
> 24 f 838 97.4% 816 0 368 448 0
> 25 m 2.6% 22 0 4 18 0
> 26 f 818 97.1% 794 0 329 465 0
> 27 m 2.9% 24 0 7 17 0
> 28 f 832 98.7% 821 0 307 514 0
> 29 m 1.3% 11 0 2 9 0
> 30 f 832 97.5% 811 1 367 443 0
> 31 m 2.5% 21 0 7 14 0
> 32 f 836 99.0% 828 0 312 516 0
> 33 M 1.0% 8 0 0 8 0
> 34 f 827 98.9% 818 0 335 483 0
> 35 m 1.1% 9 0 1 8 0
> 36 f 824 99.0% 816 1 300 515 0
> 37 M 1.0% 8 0 0 8 0
> 38 f 839 95.5% 801 0 318 483 0
> 39 m 4.5% 38 0 12 26 0
> 40 f 844 97.6% 824 0 356 468 0
> 41 m 2.4% 20 0 9 11 0
> 42 f 809 98.8% 799 0 314 485 0
> 43 M 1.2% 10 0 0 10 0
> 44 f 825 97.8% 807 0 312 495 0
> 45 m 2.2% 18 0 4 14 0
> 46 f 815 99.0% 807 0 342 465 0
> 47 M 1.0% 8 0 0 8 0
> 536 dirty, 19890 queued, 20000 total, 32768 hash buckets, 4096 buffer size
> start clean at 2% (of pair total) dirty, or 16 buffs dirty, stop at 1%
>
> onstat -F
> Informix Dynamic Server Version 7.30.UC6 -- On-Line -- Up 00:28:38 --> 141568 Kbytes
>
> Fg Writes LRU Writes Chunk Writes
> 0 25320 1572
>
> address flusher state data
> 400404c8 0 I 0 = 0X0
> 4004097c 1 I 0 = 0X0
> 40040e30 2 I 0 = 0X0
> 400412e4 3 I 0 = 0X0
> 40041798 4 I 0 = 0X0
> 40041c4c 5 I 0 = 0X0
> 40042100 6 I 0 = 0X0
> 400425b4 7 I 0 = 0X0
> 40042a68 8 I 0 = 0X0
> 40042f1c 9 I 0 = 0X0
> 400433d0 10 I 0 = 0X0
> 40043884 11 I 0 = 0X0
> 40043d38 12 I 0 = 0X0
> 400441ec 13 I 0 = 0X0
> 400446a0 14 I 0 = 0X0
> 40044b54 15 I 0 = 0X0
> 40045008 16 I 0 = 0X0
> 400454bc 17 I 0 = 0X0
> 40045970 18 I 0 = 0X0
> 40045e24 19 I 0 = 0X0
> 400462d8 20 I 0 = 0X0
> 4004678c 21 I 0 = 0X0
> 40046c40 22 I 0 = 0X0
> 400470f4 23 I 0 = 0X0
> states: Exit Idle Chunk Lru
>
> onconfig
> Informix Dynamic Server Version 7.30.UC6 -- On-Line -- Up 00:28:23 --
> 141568 Kbytes
>
> Configuration File: /az/ifx730/gls/etc/onconfig.glssrv
> #**************************************************************************
> #
> # INFORMIX SOFTWARE, INC.
> #
> # Title: onconfig.pproazo
> # Description: Informix Dynamic Server Configuration Parameters
> #
> #**************************************************************************
>
> # Root Dbspace Configuration
>
> ROOTNAME rootdbs # Root dbspace name> ROOTPATH /dev/rgls_rootdbs01
> # Path for device containing root dbspace
> ROOTOFFSET 0 # Offset of root dbspace into device
> (Kbytes)
> ROOTSIZE 64000 # Size of root dbspace (Kbytes)>
> # Disk Mirroring Configuration Parameters
>
> MIRROR 0 # Mirroring flag (Yes = 1, No = 0)
> MIRRORPATH # Path for device containing mirrored root
> MIRROROFFSET 0 # Offset into mirrored device (Kbytes)>
> # Physical Log Configuration
>
> PHYSDBS physdbs # Location (dbspace) of physical log
> PHYSFILE 20000 # Physical log file size (Kbytes)>
> # Logical Log Configuration
>
> LOGFILES 48 # Number of logical log files
> LOGSIZE 500 # Logical log size (Kbytes)>
> # Diagnostics
>
> MSGPATH /az/ifx730/gls/online.glssrv.log # System message log file
> path
> CONSOLE /dev/console # System console message
Kernoal.Stephens@AUTOZONE.COM wrote in message
<80csie$ad9$1@news.xmission.com>...
>
>
>
>
>Here is what I am seeing. In onstat -R the dirty q's are over 2% dirty.
>onstat -F shows all the flushers as Idle.>
>I know I have seen this in the post but cannot find it in search.
>
>Attached.
>onstat -R output
>onstat -F output>onconfig output
>IDS 7.30.UC6
>AIX 4.3.2
>4CPU
>512MB
>
<snip>
There's a bug in certain versions of online that may be affecting you -
Defect 115741, whereby the wakeup code for the page cleaners doesn't work
and the dirty queues grow beyond LRU_MAX_DIRTY. It certainly affected me in
the NT ver 7.30 (the bug does also affect unix) - we had checkpoints of up
to 2 minutes, where they should have been 1-2 seconds. Upgrading to 7.31
fixed it for me.
Andrew Lawrenson
--
--
- Remove nospam. from address when replying by email -
Any Opinions Expressed within are Mine and not necessarily those of my
Employer
Kernoal.Stephens@AUTOZONE.COM wrote in message
<80csie$ad9$1@news.xmission.com>...
>
>
>
>
>Here is what I am seeing. In onstat -R the dirty q's are over 2% dirty.
>onstat -F shows all the flushers as Idle.>
>I know I have seen this in the post but cannot find it in search.
>
>Attached.
>onstat -R output
>onstat -F output>onconfig output
>IDS 7.30.UC6
>AIX 4.3.2
>4CPU
>512MB
>
<snip>
There's a bug in certain versions of online that may be affecting you -
Defect 115741, whereby the wakeup code for the page cleaners doesn't work
and the dirty queues grow beyond LRU_MAX_DIRTY. It certainly affected me in
the NT ver 7.30 (the bug does also affect unix) - we had checkpoints of up
to 2 minutes, where they should have been 1-2 seconds. Upgrading to 7.31
fixed it for me.
Andrew Lawrenson
--
--
- Remove nospam. from address when replying by email -
Any Opinions Expressed within are Mine and not necessarily those of my
Employer
Kernoal.Stephens@AUTOZONE.COM wrote in message
<80csie$ad9$1@news.xmission.com>...
>
>
>
>
>Here is what I am seeing. In onstat -R the dirty q's are over 2% dirty.
>onstat -F shows all the flushers as Idle.>
>I know I have seen this in the post but cannot find it in search.
>
>Attached.
>onstat -R output
>onstat -F output>onconfig output
>IDS 7.30.UC6
>AIX 4.3.2
>4CPU
>512MB
>
<snip>
There's a bug in certain versions of online that may be affecting you -
Defect 115741, whereby the wakeup code for the page cleaners doesn't work
and the dirty queues grow beyond LRU_MAX_DIRTY. It certainly affected me in
the NT ver 7.30 (the bug does also affect unix) - we had checkpoints of up
to 2 minutes, where they should have been 1-2 seconds. Upgrading to 7.31
fixed it for me.
Andrew Lawrenson
--
--
- Remove nospam. from address when replying by email -
Any Opinions Expressed within are Mine and not necessarily those of my
Employer
what if you do have kaio enabled and still see this?
----- Original Message -----
From: Art S. Kagel <kagel@bloomberg.net>
To: <Kernoal.Stephens@AUTOZONE.COM>
Sent: Wednesday, November 10, 1999 6:13 PM
Subject: Re: Dirty LRU exceeding the LRU_MAX of 2%
> Message from the Deja.com forum:
> comp.databases.informix
> Your subscription is set to individual email delivery
> >
> If you are not running with KAIO enabled then the problem is that you only
> have 2 AIO VPs.
>
> Art S. Kagel
>
> Kernoal.Stephens@AUTOZONE.COM wrote:
> >
> > Here is what I am seeing. In onstat -R the dirty q's are over 2% dirty.
> > onstat -F shows all the flushers as Idle.> >
> > I know I have seen this in the post but cannot find it in search.
> >
> > Attached.
> > onstat -R output
> > onstat -F output> > onconfig output
> > IDS 7.30.UC6
> > AIX 4.3.2
> > 4CPU
> > 512MB
> >
> > Informix Dynamic Server Version 7.30.UC6 -- On-Line -- Up 00:28:33 --
> > 141568 Kbytes
> >
> > 24 buffer LRU queue pairs priority levels
> > # f/m pair total % of length LOW MED_LOW MED_HIGH HIGH
> > 0 f 825 96.8% 799 1 304 494 0
> > 1 m 3.2% 26 0 8 18 0
> > 2 f 821 99.0% 813 0 344 469 0
> > 3 M 1.0% 8 0 0 8 0
> > 4 f 832 95.0% 790 0 294 496 0
> > 5 m 5.0% 42 0 7 35 0
> > 6 f 832 96.4% 802 0 271 531 0
> > 7 m 3.6% 30 0 11 19 0
> > 8 f 829 99.0% 821 0 272 549 0
> > 9 M 1.0% 8 0 0 8 0
> > 10 f 834 95.3% 795 1 318 476 0
> > 11 m 4.7% 39 0 13 26 0
> > 12 f 837 97.3% 814 0 283 531 0
> > 13 m 2.7% 23 0 7 16 0
> > 14 f 843 96.4% 813 0 343 470 0
> > 15 m 3.6% 30 0 11 19 0
> > 16 f 825 95.4% 787 0 313 474 0
> > 17 m 4.6% 38 0 18 20 0
> > 18 f 820 95.1% 780 0 299 481 0
> > 19 m 4.9% 40 0 13 27 0
> > 20 f 827 94.7% 783 0 282 501 0
> > 21 m 5.3% 44 0 10 34 0
> > 22 F 826 98.7% 815 0 330 485 0
> > 23 M 1.3% 11 0 2 9 0
> > 24 f 838 97.4% 816 0 368 448 0
> > 25 m 2.6% 22 0 4 18 0
> > 26 f 818 97.1% 794 0 329 465 0
> > 27 m 2.9% 24 0 7 17 0
> > 28 f 832 98.7% 821 0 307 514 0
> > 29 m 1.3% 11 0 2 9 0
> > 30 f 832 97.5% 811 1 367 443 0
> > 31 m 2.5% 21 0 7 14 0
> > 32 f 836 99.0% 828 0 312 516 0
> > 33 M 1.0% 8 0 0 8 0
> > 34 f 827 98.9% 818 0 335 483 0
> > 35 m 1.1% 9 0 1 8 0
> > 36 f 824 99.0% 816 1 300 515 0
> > 37 M 1.0% 8 0 0 8 0
> > 38 f 839 95.5% 801 0 318 483 0
> > 39 m 4.5% 38 0 12 26 0
> > 40 f 844 97.6% 824 0 356 468 0
> > 41 m 2.4% 20 0 9 11 0
> > 42 f 809 98.8% 799 0 314 485 0
> > 43 M 1.2% 10 0 0 10 0
> > 44 f 825 97.8% 807 0 312 495 0
> > 45 m 2.2% 18 0 4 14 0
> > 46 f 815 99.0% 807 0 342 465 0
> > 47 M 1.0% 8 0 0 8 0
> > 536 dirty, 19890 queued, 20000 total, 32768 hash buckets, 4096 buffer
size
> > start clean at 2% (of pair total) dirty, or 16 buffs dirty, stop at 1%
> >
> > onstat -F
> > Informix Dynamic Server Version 7.30.UC6 -- On-Line -- Up 00:28:38 --> > 141568 Kbytes
> >
> > Fg Writes LRU Writes Chunk Writes
> > 0 25320 1572
> >
> > address flusher state data
> > 400404c8 0 I 0 = 0X0
> > 4004097c 1 I 0 = 0X0
> > 40040e30 2 I 0 = 0X0
> > 400412e4 3 I 0 = 0X0
> > 40041798 4 I 0 = 0X0
> > 40041c4c 5 I 0 = 0X0
> > 40042100 6 I 0 = 0X0
> > 400425b4 7 I 0 = 0X0
> > 40042a68 8 I 0 = 0X0
> > 40042f1c 9 I 0 = 0X0
> > 400433d0 10 I 0 = 0X0
> > 40043884 11 I 0 = 0X0
> > 40043d38 12 I 0 = 0X0
> > 400441ec 13 I 0 = 0X0
> > 400446a0 14 I 0 = 0X0
> > 40044b54 15 I 0 = 0X0
> > 40045008 16 I 0 = 0X0
> > 400454bc 17 I 0 = 0X0
> > 40045970 18 I 0 = 0X0
> > 40045e24 19 I 0 = 0X0
> > 400462d8 20 I 0 = 0X0
> > 4004678c 21 I 0 = 0X0
> > 40046c40 22 I 0 = 0X0
> > 400470f4 23 I 0 = 0X0
> > states: Exit Idle Chunk Lru
> >
> > onconfig
> > Informix Dynamic Server Version 7.30.UC6 -- On-Line -- Up 00:28:23 --
> > 141568 Kbytes
> >
> > Configuration File: /az/ifx730/gls/etc/onconfig.glssrv
> >
#**************************************************************************
> > #
> > # INFORMIX SOFTWARE, INC.
> > #
> > # Title: onconfig.pproazo
> > # Description: Informix Dynamic Server Configuration Parameters
> > #
> >
#**************************************************************************
> >
> > # Root Dbspace Configuration
> >
> > ROOTNAME rootdbs # Root dbspace name> > ROOTPATH /dev/rgls_rootdbs01
> > # Path for device containing root
dbspace
> > ROOTOFFSET 0 # Offset of root dbspace into device
> > (Kbytes)
> > ROOTSIZE 64000 # Size of root dbspace (Kbytes)> >
> > # Disk Mirroring Configuration Parameters
> >
> > MIRROR 0 # Mirroring flag (Yes = 1, No = 0)
>