== sanity test 255a: check 'lfs ladvise -a willread' ===== 11:20:59 (1787844059)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 14.0955 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-ffff9cc5d110c000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.507055
Iter 1/10: OSS cache speed: 0.4446
Iter 1/10: ladvise speed: 0.461187
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.435711
Iter 2/10: OSS cache speed: 0.410987
Iter 2/10: ladvise speed: 0.438878
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.429547
Iter 3/10: OSS cache speed: 0.461748
Iter 3/10: ladvise speed: 0.362345
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.398657
Iter 4/10: OSS cache speed: 0.379304
Iter 4/10: ladvise speed: 0.391862
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.350876
Iter 5/10: OSS cache speed: 0.351305
Iter 5/10: ladvise speed: 0.364825
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.437249
Iter 6/10: OSS cache speed: 0.437443
Iter 6/10: ladvise speed: 0.391229
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.398961
Iter 7/10: OSS cache speed: 0.367879
Iter 7/10: ladvise speed: 0.436634
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.443435
Iter 8/10: OSS cache speed: 0.446126
Iter 8/10: ladvise speed: 0.347878
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.371958
Iter 9/10: OSS cache speed: 0.445698
Iter 9/10: ladvise speed: 0.477372
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.439416
Iter 10/10: OSS cache speed: 0.439718
Iter 10/10: ladvise speed: 0.428025
Average uncached read: .42
Average speedup with OSS cached read:  .41 = +-2%
Average speedup with ladvise willread:  .41 = +-2%
Speedup with OSS cached read less than 20%,  got -2%. Skipping ladvise willread check.
fail_loc=0