== sanity test 255a: check 'lfs ladvise -a willread' ===== 15:35:03 (1746128103)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 6.38496 s, 16.4 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-ffff88012dba6000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.528725
Iter 1/10: OSS cache speed: 0.519707
Iter 1/10: ladvise speed: 0.476482
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.479325
Iter 2/10: OSS cache speed: 0.4686
Iter 2/10: ladvise speed: 0.452617
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.414347
Iter 3/10: OSS cache speed: 0.419636
Iter 3/10: ladvise speed: 0.411582
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.462796
Iter 4/10: OSS cache speed: 0.43982
Iter 4/10: ladvise speed: 0.422447
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.385648
Iter 5/10: OSS cache speed: 0.420563
Iter 5/10: ladvise speed: 0.463361
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.456822
Iter 6/10: OSS cache speed: 0.476223
Iter 6/10: ladvise speed: 0.441023
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.436507
Iter 7/10: OSS cache speed: 0.440037
Iter 7/10: ladvise speed: 0.442036
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.459755
Iter 8/10: OSS cache speed: 0.434323
Iter 8/10: ladvise speed: 0.458919
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.432432
Iter 9/10: OSS cache speed: 0.418455
Iter 9/10: ladvise speed: 0.434923
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.444446
Iter 10/10: OSS cache speed: 0.429623
Iter 10/10: ladvise speed: 0.477237
Average uncached read: .45
Average speedup with OSS cached read:  .44 = +-2%
Average speedup with ladvise willread:  .44 = +-2%
Speedup with OSS cached read less than 20%,  got -2%. Skipping ladvise willread check.
fail_loc=0