== sanity test 255a: check 'lfs ladvise -a willread' ===== 13:44:14 (1780854254)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.0987 s, 9.4 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-ffff8b7ec85ab000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.417916
Iter 1/10: OSS cache speed: 0.442087
Iter 1/10: ladvise speed: 0.401994
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.411024
Iter 2/10: OSS cache speed: 0.421479
Iter 2/10: ladvise speed: 0.34043
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.394265
Iter 3/10: OSS cache speed: 0.429398
Iter 3/10: ladvise speed: 0.419221
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.470448
Iter 4/10: OSS cache speed: 0.379628
Iter 4/10: ladvise speed: 0.36112
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.440931
Iter 5/10: OSS cache speed: 0.414232
Iter 5/10: ladvise speed: 0.385329
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.42489
Iter 6/10: OSS cache speed: 0.490321
Iter 6/10: ladvise speed: 0.529606
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.523674
Iter 7/10: OSS cache speed: 0.532843
Iter 7/10: ladvise speed: 0.515343
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.563522
Iter 8/10: OSS cache speed: 0.514086
Iter 8/10: ladvise speed: 0.55649
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.609642
Iter 9/10: OSS cache speed: 0.62371
Iter 9/10: ladvise speed: 0.596277
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.585381
Iter 10/10: OSS cache speed: 0.583958
Iter 10/10: ladvise speed: 0.597861
Average uncached read: .48
Average speedup with OSS cached read:  .48 = +0%
Average speedup with ladvise willread:  .47 = +-2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0