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Re: RE: Checkpoints slowing down the insert on....

Posted By: NITIN MATHUR
Date: Wednesday, 2 April 2014, at 10:24 a.m.

In Response To: RE: Checkpoints slowing down the insert on.... (Alexandre Marini)

Hi Alexandre,
Finally managed to make the changes to the instance with RTO_SERVER_RESTART=1800, but that started triggered checkpoints every 1 minute so we quickly rolled back the change. Please see below.
What do we do next?
romeo502.prod.otc(informix)$ onstat -g ckp
IBM Informix Dynamic Server Version 11.70.FC5X7 -- On-Line -- Up 3 days 22:11:13 -- 45767680 Kbytes
AUTO_CKPTS=On RTO_SERVER_RESTART=Off
Critical Sections Physical Log Logical Log
Clock Total Flush Block # Ckpt Wait Long # Dirty Dskflu Total Avg Total Avg
Interval Time Trigger LSN Time Time Time Waits Time Time Time Buffers /Sec Pages /Sec Pages /Sec
191060 07:49:49 RTO 100496:0x154441cc 1.2 1.1 0.0 1 0.0 0.0 0.0 24696 21611 18463 184 19528 195
191061 07:50:56 RTO 100497:0x17947d4 2.2 2.2 0.0 1 0.0 0.0 0.0 29144 13426 22913 347 18968 287
191062 07:51:23 RTO 100497:0x61a2018 2.3 2.3 0.0 0 0.0 0.0 0.0 31618 13658 24920 922 19645 727
191063 07:52:34 RTO 100497:0xb044018 1.2 1.2 0.0 1 0.0 0.0 0.0 22556 19249 15475 214 20273 281
191064 07:53:49 RTO 100497:0x10256018 0.9 0.9 0.0 0 0.0 0.0 0.0 22227 22227 14750 194 21143 278
191065 07:55:05 RTO 100497:0x152d6018 1.6 1.6 0.0 0 0.0 0.0 0.0 32040 20069 24772 330 21851 291
191066 07:56:28 RTO 100498:0x1cf8018 2.7 2.7 0.0 0 0.0 0.0 0.0 21706 8151 14605 178 21146 257
191067 07:57:44 RTO 100498:0x69a0018 1.7 1.7 0.0 0 0.0 0.0 0.0 22984 13857 16180 210 20083 260
191068 07:58:55 RTO 100498:0xb89b3e8 1.4 1.4 0.0 1 0.0 0.0 0.0 23107 16283 16123 227 21316 300
191069 08:00:12 RTO 100498:0x1128c018 2.2 2.2 0.0 1 0.0 0.0 0.0 24548 11241 16434 216 23644 311
191070 08:01:23 RTO 100498:0x1603f018 1.7 1.7 0.0 0 0.0 0.0 0.0 25109 14705 18267 253 20316 282
191071 08:02:39 RTO 100499:0x293b018 1.9 1.9 0.0 1 0.0 0.0 0.0 23384 12335 16341 215 21160 278
191072 08:03:54 RTO 100499:0x7883018 0.8 0.8 0.0 0 0.0 0.0 0.0 22108 22108 15040 197 20683 272
191073 08:05:15 RTO 100499:0xc7c6018 1.4 1.4 0.0 0 0.0 0.0 0.0 22657 16422 15608 195 20554 256
191074 08:06:32 RTO 100499:0x11715484 2.1 2.1 0.0 1 0.0 0.0 0.0 30283 14538 23421 308 21005 276
191075 08:07:34 RTO 100499:0x1654a018 2.1 2.1 0.0 0 0.0 0.0 0.0 30261 14731 23505 379 20743 334
191076 08:08:45 RTO 100500:0x2ac3018 1.1 0.8 0.0 0 0.0 0.0 0.0 23374 23374 16611 230 19767 274
191077 08:09:55 RTO 100500:0x7784018 1.0 0.8 0.0 0 0.0 0.0 0.0 23232 23232 16420 231 19850 279
191078 08:11:06 RTO 100500:0xc5e8018 1.6 1.5 0.0 0 0.0 0.0 0.0 26252 16997 19474 278 20332 290
191079 08:21:32 CKPTINTVL 100502:0x148dc018 1.3 1.2 0.0 1 0.0 0.0 0.0 25112 20303 50337 80 233813 373
Max Plog Max Llog Max Dskflush Avg Dskflush Avg Dirty Blocked
pages/sec pages/sec Time pages/sec pages/sec Time
24777 87963 76 4610 2 0
regards,
Nitin

Messages In This Thread

Checkpoints slowing down the insert on Primary
NITIN MATHUR -- Tuesday, 18 March 2014, at 12:01 p.m.
- RE: Checkpoints slowing down the insert on Primary
  Alexandre Marini -- Tuesday, 18 March 2014, at 1:50 p.m.
  - Re: RE: Checkpoints slowing down the insert on Pri
    NITIN MATHUR -- Tuesday, 18 March 2014, at 2:25 p.m.
    - RE: Checkpoints slowing down the insert on....
      Alexandre Marini -- Tuesday, 18 March 2014, at 2:45 p.m.
      - Re: RE: Checkpoints slowing down the insert on....
        NITIN MATHUR -- Wednesday, 2 April 2014, at 10:24 a.m.
        
        RE: Checkpoints slowing down the insert on....
        Alexandre Marini -- Wednesday, 2 April 2014, at 2:09 p.m.
        
        Re: RE: Checkpoints slowing down the insert on....
        NITIN MATHUR -- Wednesday, 2 April 2014, at 3:21 p.m.
        
        Re: RE: Checkpoints slowing down the insert on....
        david@smooth1.co.uk -- Wednesday, 2 April 2014, at 4:32 p.m.
        
        Re: RE: Checkpoints slowing down the insert on....
        NITIN MATHUR -- Thursday, 3 April 2014, at 9:57 a.m.

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