== sanity test 255a: check 'lfs ladvise -a willread' ===== 22:52:42 (1743735162)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.29134 s, 45.8 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-ffff8800b61e8000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.43546
Iter 1/10: OSS cache speed: 1.61473
Iter 1/10: ladvise speed: 1.64989
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.73287
Iter 2/10: OSS cache speed: 1.65978
Iter 2/10: ladvise speed: 1.54566
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.30745
Iter 3/10: OSS cache speed: 1.64232
Iter 3/10: ladvise speed: 1.56384
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.37735
Iter 4/10: OSS cache speed: 1.50041
Iter 4/10: ladvise speed: 2.09411
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.78329
Iter 5/10: OSS cache speed: 1.56766
Iter 5/10: ladvise speed: 1.65405
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.30256
Iter 6/10: OSS cache speed: 1.53351
Iter 6/10: ladvise speed: 1.84236
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.28882
Iter 7/10: OSS cache speed: 1.52826
Iter 7/10: ladvise speed: 1.52619
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.34616
Iter 8/10: OSS cache speed: 1.49883
Iter 8/10: ladvise speed: 1.83571
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.33524
Iter 9/10: OSS cache speed: 1.52782
Iter 9/10: ladvise speed: 1.74477
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.32467
Iter 10/10: OSS cache speed: 1.54167
Iter 10/10: ladvise speed: 1.62849
Average uncached read: 1.42
Average speedup with OSS cached read:  1.56 = +9%
Average speedup with ladvise willread:  1.70 = +19%
Speedup with OSS cached read less than 20%,  got 9%. Skipping ladvise willread check.
fail_loc=0