== sanity test 255a: check 'lfs ladvise -a willread' ===== 22:09:26 (1788833366)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.6356 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-ffff986ecbc6e800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.377894
Iter 1/10: OSS cache speed: 0.393567
Iter 1/10: ladvise speed: 0.451227
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.467795
Iter 2/10: OSS cache speed: 0.423479
Iter 2/10: ladvise speed: 0.459639
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.432162
Iter 3/10: OSS cache speed: 0.376555
Iter 3/10: ladvise speed: 0.425979
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.438336
Iter 4/10: OSS cache speed: 0.386518
Iter 4/10: ladvise speed: 0.458568
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.459295
Iter 5/10: OSS cache speed: 0.424504
Iter 5/10: ladvise speed: 0.452584
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.393247
Iter 6/10: OSS cache speed: 0.429594
Iter 6/10: ladvise speed: 0.342748
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.408676
Iter 7/10: OSS cache speed: 0.420774
Iter 7/10: ladvise speed: 0.387989
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.438448
Iter 8/10: OSS cache speed: 0.467533
Iter 8/10: ladvise speed: 0.442884
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.42972
Iter 9/10: OSS cache speed: 0.445658
Iter 9/10: ladvise speed: 0.394382
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.410621
Iter 10/10: OSS cache speed: 0.400696
Iter 10/10: ladvise speed: 0.462705
Average uncached read: .42
Average speedup with OSS cached read:  .41 = +-2%
Average speedup with ladvise willread:  .42 = +0%
Speedup with OSS cached read less than 20%,  got -2%. Skipping ladvise willread check.
fail_loc=0