== sanity test 255a: check 'lfs ladvise -a willread' ===== 11:30:58 (1787844658)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 14.1882 s, 7.4 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-ffff9a0ad8a36800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.350184
Iter 1/10: OSS cache speed: 0.301637
Iter 1/10: ladvise speed: 0.302513
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.301889
Iter 2/10: OSS cache speed: 0.316524
Iter 2/10: ladvise speed: 0.288355
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.34737
Iter 3/10: OSS cache speed: 0.368557
Iter 3/10: ladvise speed: 0.310161
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.319765
Iter 4/10: OSS cache speed: 0.282835
Iter 4/10: ladvise speed: 0.301854
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.337468
Iter 5/10: OSS cache speed: 0.340751
Iter 5/10: ladvise speed: 0.281554
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.282998
Iter 6/10: OSS cache speed: 0.304699
Iter 6/10: ladvise speed: 0.371874
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.311957
Iter 7/10: OSS cache speed: 0.344029
Iter 7/10: ladvise speed: 0.331934
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.319705
Iter 8/10: OSS cache speed: 0.319623
Iter 8/10: ladvise speed: 0.316774
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.307348
Iter 9/10: OSS cache speed: 0.289377
Iter 9/10: ladvise speed: 0.293141
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.270833
Iter 10/10: OSS cache speed: 0.260225
Iter 10/10: ladvise speed: 0.310615
Average uncached read: .31
Average speedup with OSS cached read:  .31 = +0%
Average speedup with ladvise willread:  .31 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0