== sanity test 255a: check 'lfs ladvise -a willread' ===== 10:10:32 (1788531032)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 14.3766 s, 7.3 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-ffff89cc9964b000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.371826
Iter 1/10: OSS cache speed: 0.352773
Iter 1/10: ladvise speed: 0.376941
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.388298
Iter 2/10: OSS cache speed: 0.396539
Iter 2/10: ladvise speed: 0.369853
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.365522
Iter 3/10: OSS cache speed: 0.353713
Iter 3/10: ladvise speed: 0.354634
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.390323
Iter 4/10: OSS cache speed: 0.397526
Iter 4/10: ladvise speed: 0.384224
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.38092
Iter 5/10: OSS cache speed: 0.356699
Iter 5/10: ladvise speed: 0.420852
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.411671
Iter 6/10: OSS cache speed: 0.378641
Iter 6/10: ladvise speed: 0.363616
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.360459
Iter 7/10: OSS cache speed: 0.391247
Iter 7/10: ladvise speed: 0.413063
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.370641
Iter 8/10: OSS cache speed: 0.363407
Iter 8/10: ladvise speed: 0.429435
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.364641
Iter 9/10: OSS cache speed: 0.410151
Iter 9/10: ladvise speed: 0.390742
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.364731
Iter 10/10: OSS cache speed: 0.382857
Iter 10/10: ladvise speed: 0.385752
Average uncached read: .37
Average speedup with OSS cached read:  .37 = +0%
Average speedup with ladvise willread:  .38 = +2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0