== sanity test 255a: check 'lfs ladvise -a willread' ===== 06:29:23 (1733398163)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.38521 s, 44.0 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-ffff8800b3797800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.72585
Iter 1/10: OSS cache speed: 2.61111
Iter 1/10: ladvise speed: 2.76123
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.78285
Iter 2/10: OSS cache speed: 2.66705
Iter 2/10: ladvise speed: 2.51125
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.61111
Iter 3/10: OSS cache speed: 2.71511
Iter 3/10: ladvise speed: 2.68941
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.57364
Iter 4/10: OSS cache speed: 2.55313
Iter 4/10: ladvise speed: 2.79889
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.85638
Iter 5/10: OSS cache speed: 2.83737
Iter 5/10: ladvise speed: 1.95545
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.59854
Iter 6/10: OSS cache speed: 2.75805
Iter 6/10: ladvise speed: 2.74693
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.60383
Iter 7/10: OSS cache speed: 2.36376
Iter 7/10: ladvise speed: 2.33595
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.47689
Iter 8/10: OSS cache speed: 2.8014
Iter 8/10: ladvise speed: 2.82753
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.86329
Iter 9/10: OSS cache speed: 2.82633
Iter 9/10: ladvise speed: 2.74431
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.74496
Iter 10/10: OSS cache speed: 2.61748
Iter 10/10: ladvise speed: 2.86197
Average uncached read: 2.68
Average speedup with OSS cached read:  2.67 = +0%
Average speedup with ladvise willread:  2.62 = +-2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0