== sanity test 255a: check 'lfs ladvise -a willread' ===== 15:42:35 (1787341355)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.281 s, 8.5 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-ffff8e61077c6000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.301648
Iter 1/10: OSS cache speed: 0.362602
Iter 1/10: ladvise speed: 0.372568
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.351129
Iter 2/10: OSS cache speed: 0.342587
Iter 2/10: ladvise speed: 0.330522
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.367387
Iter 3/10: OSS cache speed: 0.404839
Iter 3/10: ladvise speed: 0.368876
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.353435
Iter 4/10: OSS cache speed: 0.327676
Iter 4/10: ladvise speed: 0.308688
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.35601
Iter 5/10: OSS cache speed: 0.283117
Iter 5/10: ladvise speed: 0.331841
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.313884
Iter 6/10: OSS cache speed: 0.316728
Iter 6/10: ladvise speed: 0.343555
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.368392
Iter 7/10: OSS cache speed: 0.351153
Iter 7/10: ladvise speed: 0.351175
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.348137
Iter 8/10: OSS cache speed: 0.339576
Iter 8/10: ladvise speed: 0.334422
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.313495
Iter 9/10: OSS cache speed: 0.361623
Iter 9/10: ladvise speed: 0.341961
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.342532
Iter 10/10: OSS cache speed: 0.360715
Iter 10/10: ladvise speed: 0.336871
Average uncached read: .34
Average speedup with OSS cached read:  .34 = +0%
Average speedup with ladvise willread:  .34 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0