== sanity test 255a: check 'lfs ladvise -a willread' ===== 09:52:57 (1783950777)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.9453 s, 8.8 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-ffff8d764804e000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.308559
Iter 1/10: OSS cache speed: 0.317337
Iter 1/10: ladvise speed: 0.309511
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.302955
Iter 2/10: OSS cache speed: 0.293844
Iter 2/10: ladvise speed: 0.304803
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.28928
Iter 3/10: OSS cache speed: 0.299138
Iter 3/10: ladvise speed: 0.248947
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.356816
Iter 4/10: OSS cache speed: 0.344097
Iter 4/10: ladvise speed: 0.358572
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.330289
Iter 5/10: OSS cache speed: 0.339127
Iter 5/10: ladvise speed: 0.31147
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.305452
Iter 6/10: OSS cache speed: 0.344995
Iter 6/10: ladvise speed: 0.333258
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.371976
Iter 7/10: OSS cache speed: 0.369349
Iter 7/10: ladvise speed: 0.342045
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.337089
Iter 8/10: OSS cache speed: 0.376727
Iter 8/10: ladvise speed: 0.348364
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.377449
Iter 9/10: OSS cache speed: 0.354604
Iter 9/10: ladvise speed: 0.316231
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.350753
Iter 10/10: OSS cache speed: 0.350664
Iter 10/10: ladvise speed: 0.365536
Average uncached read: .33
Average speedup with OSS cached read:  .33 = +0%
Average speedup with ladvise willread:  .32 = +-3%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0