== sanity test 255a: check 'lfs ladvise -a willread' ===== 11:23:33 (1746113013)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.29811 s, 45.6 MB/s
ladvise: range [2, 1] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: range [2, 2] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: conflicting arguments of -l and -e
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

Synchronous ladvise should wait
fail_val=8
fail_loc=0x237
Asynchronous ladvise shouldn't wait
llite.lustre-ffff8800b6304800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.98355
Iter 1/10: OSS cache speed: 1.89313
Iter 1/10: ladvise speed: 1.91146
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.06513
Iter 2/10: OSS cache speed: 2.16803
Iter 2/10: ladvise speed: 2.08596
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.06201
Iter 3/10: OSS cache speed: 2.11671
Iter 3/10: ladvise speed: 1.60077
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.50682
Iter 4/10: OSS cache speed: 1.34859
Iter 4/10: ladvise speed: 1.51059
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.4001
Iter 5/10: OSS cache speed: 1.33854
Iter 5/10: ladvise speed: 1.32893
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.3011
Iter 6/10: OSS cache speed: 1.35174
Iter 6/10: ladvise speed: 1.34319
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.41531
Iter 7/10: OSS cache speed: 1.38608
Iter 7/10: ladvise speed: 1.35677
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.32905
Iter 8/10: OSS cache speed: 1.47046
Iter 8/10: ladvise speed: 1.43668
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.40933
Iter 9/10: OSS cache speed: 1.38805
Iter 9/10: ladvise speed: 1.52126
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.39354
Iter 10/10: OSS cache speed: 1.36374
Iter 10/10: ladvise speed: 1.42444
Average uncached read: 1.58
Average speedup with OSS cached read:  1.58 = +0%
Average speedup with ladvise willread:  1.55 = +-1%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0