== sanity test 255a: check 'lfs ladvise -a willread' ===== 18:45:08 (1784587508)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.7095 s, 9.0 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-ffff9dc550ab5000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.345511
Iter 1/10: OSS cache speed: 0.370055
Iter 1/10: ladvise speed: 0.337165
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.33594
Iter 2/10: OSS cache speed: 0.347813
Iter 2/10: ladvise speed: 0.304446
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.327822
Iter 3/10: OSS cache speed: 0.318409
Iter 3/10: ladvise speed: 0.357503
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.331355
Iter 4/10: OSS cache speed: 0.353566
Iter 4/10: ladvise speed: 0.391354
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.384393
Iter 5/10: OSS cache speed: 0.339182
Iter 5/10: ladvise speed: 0.340087
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.36549
Iter 6/10: OSS cache speed: 0.376896
Iter 6/10: ladvise speed: 0.381915
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.37201
Iter 7/10: OSS cache speed: 0.344241
Iter 7/10: ladvise speed: 0.331075
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.343804
Iter 8/10: OSS cache speed: 0.337173
Iter 8/10: ladvise speed: 0.339644
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.34622
Iter 9/10: OSS cache speed: 0.355377
Iter 9/10: ladvise speed: 0.313863
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.340723
Iter 10/10: OSS cache speed: 0.314326
Iter 10/10: ladvise speed: 0.294369
Average uncached read: .34
Average speedup with OSS cached read:  .34 = +0%
Average speedup with ladvise willread:  .33 = +-2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0