== sanity test 255a: check 'lfs ladvise -a willread' ===== 17:05:34 (1746133534)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 4.19868 s, 25.0 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-ffff88012b719800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.836215
Iter 1/10: OSS cache speed: 0.939308
Iter 1/10: ladvise speed: 1.08986
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.34586
Iter 2/10: OSS cache speed: 1.201
Iter 2/10: ladvise speed: 1.152
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.05947
Iter 3/10: OSS cache speed: 1.04342
Iter 3/10: ladvise speed: 0.928334
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.987289
Iter 4/10: OSS cache speed: 1.19366
Iter 4/10: ladvise speed: 1.11078
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.02366
Iter 5/10: OSS cache speed: 0.949335
Iter 5/10: ladvise speed: 0.94488
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.85965
Iter 6/10: OSS cache speed: 0.911427
Iter 6/10: ladvise speed: 0.960622
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.00314
Iter 7/10: OSS cache speed: 0.760396
Iter 7/10: ladvise speed: 0.9573
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.987266
Iter 8/10: OSS cache speed: 0.965503
Iter 8/10: ladvise speed: 1.07668
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.03626
Iter 9/10: OSS cache speed: 1.06314
Iter 9/10: ladvise speed: 0.836871
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.919949
Iter 10/10: OSS cache speed: 0.939708
Iter 10/10: ladvise speed: 0.99555
Average uncached read: 1.00
Average speedup with OSS cached read:  .99 = +-1%
Average speedup with ladvise willread:  1.00 = +0%
Speedup with OSS cached read less than 20%,  got -1%. Skipping ladvise willread check.
fail_loc=0