== sanity test 255a: check 'lfs ladvise -a willread' ===== 02:55:49 (1787468149)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 13.8201 s, 7.6 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-ffff8c67c74da800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.285418
Iter 1/10: OSS cache speed: 0.326953
Iter 1/10: ladvise speed: 0.357227
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.350357
Iter 2/10: OSS cache speed: 0.320303
Iter 2/10: ladvise speed: 0.389323
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.32196
Iter 3/10: OSS cache speed: 0.37511
Iter 3/10: ladvise speed: 0.347801
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.311759
Iter 4/10: OSS cache speed: 0.331292
Iter 4/10: ladvise speed: 0.34872
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.336757
Iter 5/10: OSS cache speed: 0.318002
Iter 5/10: ladvise speed: 0.383627
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.336693
Iter 6/10: OSS cache speed: 0.350254
Iter 6/10: ladvise speed: 0.344678
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.38501
Iter 7/10: OSS cache speed: 0.340238
Iter 7/10: ladvise speed: 0.378128
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.353347
Iter 8/10: OSS cache speed: 0.31895
Iter 8/10: ladvise speed: 0.328498
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.301336
Iter 9/10: OSS cache speed: 0.316122
Iter 9/10: ladvise speed: 0.355134
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.317717
Iter 10/10: OSS cache speed: 0.349222
Iter 10/10: ladvise speed: 0.380134
Average uncached read: .33
Average speedup with OSS cached read:  .33 = +0%
Average speedup with ladvise willread:  .36 = +9%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0