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Re: Checkpoint: Txn Block Time

Posted By: JACQUES RENAUT
Date: Wednesday, 14 September 2011, at 9:53 a.m.

In Response To: Re: Checkpoint: Txn Block Time (VIKAS HIVARKAR)

Original Post:
Hello Jacques,
Yes, I see the same(almost) large number in
onstat -g ckp
150413 10:50:48 RTO 175551:0xe72a018 10.1 13.0 0.0 45 46116588900.0
onstat -m
10:50:49 Checkpoint Statistics - Avg. Txn Block Time 46116588899.994, # Txns blocked 45, Plog used 590125, Llog used 150086
I hope this is just a displaying issue or problem with how that variable is getting set/computed as you have mention and not a problem with my instance performance?
Regards,
Vikas
Response:
Since you are seeing the time in the onstat -g ckp output then it has to be how we are computing the time difference. It has to be a cosmetic bug because it's impossible for that phase of the checkpoint to take that much time, it would still be in that checkpoint. I would not worry about it at all. In general, I would say any value that you see for that column that is > then the "total time" column would be junk because the "total time" column should be inclusive of that "Ckpt Time" column.
Jacques Renaut
IBM Informix Advanced Support
APD Team

Messages In This Thread

Checkpoint: Txn Block Time
VIKAS HIVARKAR -- Wednesday, 7 September 2011, at 1:16 a.m.
- Re: Checkpoint: Txn Block Time
  VIKAS HIVARKAR -- Wednesday, 7 September 2011, at 1:20 a.m.
- Re: Checkpoint: Txn Block Time
  Art Kagel -- Wednesday, 7 September 2011, at 5:30 a.m.
  - Re: Checkpoint: Txn Block Time
    Clifford Burton -- Wednesday, 7 September 2011, at 5:32 a.m.
- Re: Checkpoint: Txn Block Time
  MARK JALKIEWICZ -- Wednesday, 7 September 2011, at 11:01 a.m.
  - Re: Checkpoint: Txn Block Time
    VIKAS HIVARKAR -- Thursday, 8 September 2011, at 12:59 a.m.
- Re: Checkpoint: Txn Block Time
  JACQUES RENAUT -- Thursday, 8 September 2011, at 12:28 a.m.
  - Re: Checkpoint: Txn Block Time
    VIKAS HIVARKAR -- Wednesday, 14 September 2011, at 1:41 a.m.
    - Re: Checkpoint: Txn Block Time
      JACQUES RENAUT -- Wednesday, 14 September 2011, at 9:53 a.m.

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