== sanity test 255a: check 'lfs ladvise -a willread' ===== 02:11:28 (1788847888)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.0598 s, 8.7 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-ffff8e5990d07800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.273193
Iter 1/10: OSS cache speed: 0.275574
Iter 1/10: ladvise speed: 0.309712
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.325455
Iter 2/10: OSS cache speed: 0.31965
Iter 2/10: ladvise speed: 0.279952
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.341387
Iter 3/10: OSS cache speed: 0.320502
Iter 3/10: ladvise speed: 0.282059
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.278469
Iter 4/10: OSS cache speed: 0.317811
Iter 4/10: ladvise speed: 0.310066
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.315968
Iter 5/10: OSS cache speed: 0.303852
Iter 5/10: ladvise speed: 0.329163
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.342477
Iter 6/10: OSS cache speed: 0.334866
Iter 6/10: ladvise speed: 0.350291
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.331815
Iter 7/10: OSS cache speed: 0.355746
Iter 7/10: ladvise speed: 0.376723
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.371218
Iter 8/10: OSS cache speed: 0.374482
Iter 8/10: ladvise speed: 0.372364
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.422029
Iter 9/10: OSS cache speed: 0.412681
Iter 9/10: ladvise speed: 0.467433
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.441193
Iter 10/10: OSS cache speed: 0.444215
Iter 10/10: ladvise speed: 0.508573
Average uncached read: .34
Average speedup with OSS cached read:  .34 = +0%
Average speedup with ladvise willread:  .35 = +2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0