== sanity test 255a: check 'lfs ladvise -a willread' ===== 05:47:31 (1788515251)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.3279 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-ffff9f7e42fce800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.290006
Iter 1/10: OSS cache speed: 0.328225
Iter 1/10: ladvise speed: 0.298369
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.295563
Iter 2/10: OSS cache speed: 0.310555
Iter 2/10: ladvise speed: 0.310034
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.362969
Iter 3/10: OSS cache speed: 0.352071
Iter 3/10: ladvise speed: 0.351888
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.338626
Iter 4/10: OSS cache speed: 0.299245
Iter 4/10: ladvise speed: 0.339408
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.359139
Iter 5/10: OSS cache speed: 0.337493
Iter 5/10: ladvise speed: 0.355814
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.322267
Iter 6/10: OSS cache speed: 0.312719
Iter 6/10: ladvise speed: 0.298716
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.300508
Iter 7/10: OSS cache speed: 0.367255
Iter 7/10: ladvise speed: 0.318016
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.310807
Iter 8/10: OSS cache speed: 0.343039
Iter 8/10: ladvise speed: 0.331394
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.296727
Iter 9/10: OSS cache speed: 0.340682
Iter 9/10: ladvise speed: 0.295339
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.323972
Iter 10/10: OSS cache speed: 0.303878
Iter 10/10: ladvise speed: 0.267248
Average uncached read: .32
Average speedup with OSS cached read:  .32 = +0%
Average speedup with ladvise willread:  .31 = +-3%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0