== sanity test 255a: check 'lfs ladvise -a willread' ===== 09:07:17 (1786712837)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 13.8696 s, 7.6 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-ffff958b45e5e800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.329784
Iter 1/10: OSS cache speed: 0.328485
Iter 1/10: ladvise speed: 0.310842
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.302417
Iter 2/10: OSS cache speed: 0.292503
Iter 2/10: ladvise speed: 0.311741
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.282126
Iter 3/10: OSS cache speed: 0.307672
Iter 3/10: ladvise speed: 0.273069
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.292792
Iter 4/10: OSS cache speed: 0.315355
Iter 4/10: ladvise speed: 0.291508
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.323201
Iter 5/10: OSS cache speed: 0.297058
Iter 5/10: ladvise speed: 0.324829
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.294015
Iter 6/10: OSS cache speed: 0.306718
Iter 6/10: ladvise speed: 0.339757
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.335666
Iter 7/10: OSS cache speed: 0.289311
Iter 7/10: ladvise speed: 0.321612
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.323505
Iter 8/10: OSS cache speed: 0.314445
Iter 8/10: ladvise speed: 0.332728
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.311474
Iter 9/10: OSS cache speed: 0.331207
Iter 9/10: ladvise speed: 0.326138
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.307516
Iter 10/10: OSS cache speed: 0.334774
Iter 10/10: ladvise speed: 0.315478
Average uncached read: .31
Average speedup with OSS cached read:  .31 = +0%
Average speedup with ladvise willread:  .31 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0