== sanity test 255a: check 'lfs ladvise -a willread' ===== 07:24:13 (1787829853)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 10.9152 s, 9.6 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-ffff97a7860a1800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.494726
Iter 1/10: OSS cache speed: 0.480667
Iter 1/10: ladvise speed: 0.457678
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.396043
Iter 2/10: OSS cache speed: 0.393995
Iter 2/10: ladvise speed: 0.446617
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.430066
Iter 3/10: OSS cache speed: 0.393743
Iter 3/10: ladvise speed: 0.454536
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.46887
Iter 4/10: OSS cache speed: 0.47155
Iter 4/10: ladvise speed: 0.434194
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.414802
Iter 5/10: OSS cache speed: 0.425502
Iter 5/10: ladvise speed: 0.450305
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.448964
Iter 6/10: OSS cache speed: 0.434075
Iter 6/10: ladvise speed: 0.440047
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.484402
Iter 7/10: OSS cache speed: 0.479215
Iter 7/10: ladvise speed: 0.462052
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.49081
Iter 8/10: OSS cache speed: 0.514896
Iter 8/10: ladvise speed: 0.448257
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.453749
Iter 9/10: OSS cache speed: 0.525777
Iter 9/10: ladvise speed: 0.485358
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.441833
Iter 10/10: OSS cache speed: 0.474726
Iter 10/10: ladvise speed: 0.506548
Average uncached read: .45
Average speedup with OSS cached read:  .45 = +0%
Average speedup with ladvise willread:  .45 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0