== sanity test 255a: check 'lfs ladvise -a willread' ===== 12:26:10 (1744129570)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.75217 s, 38.1 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-ffff8800b6ee6800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.67574
Iter 1/10: OSS cache speed: 2.70796
Iter 1/10: ladvise speed: 2.74764
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.81824
Iter 2/10: OSS cache speed: 2.18231
Iter 2/10: ladvise speed: 2.59089
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.53454
Iter 3/10: OSS cache speed: 2.65127
Iter 3/10: ladvise speed: 2.76
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.70101
Iter 4/10: OSS cache speed: 2.74624
Iter 4/10: ladvise speed: 2.83445
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.80027
Iter 5/10: OSS cache speed: 2.43111
Iter 5/10: ladvise speed: 2.5054
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.49339
Iter 6/10: OSS cache speed: 2.70221
Iter 6/10: ladvise speed: 2.71883
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.70841
Iter 7/10: OSS cache speed: 2.69535
Iter 7/10: ladvise speed: 2.64539
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.77693
Iter 8/10: OSS cache speed: 2.63098
Iter 8/10: ladvise speed: 2.71386
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.63443
Iter 9/10: OSS cache speed: 2.29944
Iter 9/10: ladvise speed: 2.5754
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.52998
Iter 10/10: OSS cache speed: 2.50477
Iter 10/10: ladvise speed: 2.21035
Average uncached read: 2.56
Average speedup with OSS cached read:  2.55 = +0%
Average speedup with ladvise willread:  2.63 = +2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0