I am experienceing an issue with performance while creating database
Also , I was testing the performance using SQLIO ( not at the same time of creating the database ).
I checked against d: ( one of the SAN LUN ) and L drive ( another LUN) .
For some reason , I am getting IOS/sec and MBs/ sec as 0 in L: drive.
Why would be that ? Am I missing any thing ?
Thanks for looking into this .
C:\SQLIO>sqlio -kW -t2 -s120 -dI -o1 -frandom -b64 -BH -LS Testfile.dat
sqlio v1.5.SG
using system counter for latency timings, 2994951 counts per second
2 threads writing for 120 secs to file I:Testfile.dat
using 64KB random IOs
enabling multiple I/Os per thread with 1 outstanding
buffering set to use hardware disk cache (but not file cache)
using current size: 100 MB for file: I:Testfile.dat
initialization done
CUMULATIVE DATA:
throughput metrics:
IOs/sec: 1768.82
MBs/sec: 110.55
latency metrics:
Min_Latency(ms): 0
Avg_Latency(ms): 0
Max_Latency(ms): 58998
histogram:
ms: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24+
%: 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
C:\SQLIO>sqlio -kW -t2 -s120 -dL -o1 -frandom -b64 -BH -LS Testfile.dat
sqlio v1.5.SG
using system counter for latency timings, 2994951 counts per second
2 threads writing for 120 secs to file L:Testfile.dat
using 64KB random IOs
enabling multiple I/Os per thread with 1 outstanding
buffering set to use hardware disk cache (but not file cache)
using current size: 0 MB for file: L:Testfile.dat
initialization done
CUMULATIVE DATA:
throughput metrics:
IOs/sec: 0.00
MBs/sec: 0.00
latency metrics:
Min_Latency(ms): 837374
Avg_Latency(ms): 845170
Max_Latency(ms): 852967
histogram:
ms: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24+
%: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100