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IDS 11.10 - 30 Sep 2012
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IDS Forum

Re: IDS 12.10 - Query Slow

Posted By: MOHD FADZIL JUSOH
Date: Friday, 11 November 2016, at 3:02 a.m.

In Response To: Re: IDS 12.10 - Query Slow (Art Kagel)

Hi,

Ouput from onstat -g iov

IBM Informix Dynamic Server Version 12.10.FC6AEE -- On-Line -- Up 12:32:25 -- 12568132 Kbytes

AIO I/O vps:
class/vp/id s io/s totalops dskread dskwrite dskcopy wakeups io/wup errors tempops
fifo 8 0 i 0.0 0 0 0 0 1 0.0 0 0
adt 7 0 i 0.5 21373 0 21369 0 21374 1.0 0 21373
msc 6 0 i 0.0 1862 0 0 0 1863 1.0 0 1862
aio 5 0 i 236.2 10664359 10595146 69065 0 10590884 1.0 0 3917566
aio 17 1 i 14.9 670442 649341 21094 0 626539 1.1 0 489826
aio 18 2 i 5.4 242692 228560 14129 0 209280 1.2 0 169868
aio 19 3 i 4.3 193499 181993 11504 0 162708 1.2 0 131537
aio 20 4 i 4.0 178895 169059 9834 0 152229 1.2 0 122664
aio 21 5 i 3.7 167562 158986 8574 0 146205 1.1 0 116946
aio 22 6 i 3.4 153786 145870 7914 0 137764 1.1 0 108512
aio 23 7 i 2.9 129978 122585 7392 0 126203 1.0 0 89199
aio 24 8 i 1.6 70116 63250 6866 0 54820 1.3 0 34056
aio 25 9 i 1.2 54348 47991 6357 0 37590 1.4 0 20584
aio 26 10 i 1.1 50593 44584 6009 0 34269 1.5 0 18176
aio 27 11 i 1.0 47305 41835 5470 0 31982 1.5 0 16599
aio 28 12 i 1.0 46159 40874 5285 0 29961 1.5 0 15940
aio 29 13 i 0.9 42658 37980 4676 0 28184 1.5 0 14408
aio 30 14 i 0.9 40736 36367 4367 0 26653 1.5 0 13331
aio 31 15 i 0.9 38725 34770 3953 0 25343 1.5 0 12472
aio 32 16 i 0.8 36849 33308 3540 0 24151 1.5 0 11866
aio 33 17 i 0.8 35733 32394 3337 0 23049 1.6 0 11116
aio 34 18 i 0.8 34251 31197 3053 0 21858 1.6 0 10492
aio 35 19 i 0.7 33118 30187 2929 0 20912 1.6 0 10167
aio 36 20 i 0.7 32141 29346 2794 0 19954 1.6 0 9766
aio 37 21 i 0.7 31054 28414 2639 0 19136 1.6 0 9362
aio 38 22 i 0.7 29791 27216 2575 0 18435 1.6 0 8800
aio 39 23 i 0.6 29151 26705 2446 0 17665 1.7 0 8623
aio 40 24 i 0.6 28214 25832 2382 0 16980 1.7 0 8276
aio 41 25 i 0.6 27507 25248 2259 0 16354 1.7 0 8065
aio 42 26 i 0.6 26307 24152 2155 0 15611 1.7 0 7499
aio 43 27 i 0.6 25616 23566 2050 0 15033 1.7 0 7437
aio 44 28 i 0.6 25167 23125 2042 0 14352 1.8 0 7242
aio 45 29 i 0.5 24480 22530 1950 0 13790 1.8 0 7166
aio 46 30 i 0.5 23756 21796 1960 0 13207 1.8 0 6877
pio 4 0 i 0.1 2390 0 2390 0 2391 1.0 0 2390
lio 3 0 i 17.3 779318 0 779318 0 779319 1.0 0 779318

I do notice that you are not using DIRECT_IO which might improve performance, we need to change using DIRECT_IO on our onconfig file?

Please advice.

Thank You

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