== sanity test 255a: check 'lfs ladvise -a willread' ===== 02:11:41 (1785391901)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 25.3526 s, 4.1 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-ffff96e2e0123800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.238949
Iter 1/10: OSS cache speed: 0.260294
Iter 1/10: ladvise speed: 0.234437
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.235201
Iter 2/10: OSS cache speed: 0.228628
Iter 2/10: ladvise speed: 0.237383
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.221155
Iter 3/10: OSS cache speed: 0.234269
Iter 3/10: ladvise speed: 0.191581
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.193685
Iter 4/10: OSS cache speed: 0.213792
Iter 4/10: ladvise speed: 0.252576
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.231635
Iter 5/10: OSS cache speed: 0.222317
Iter 5/10: ladvise speed: 0.224168
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.241439
Iter 6/10: OSS cache speed: 0.245226
Iter 6/10: ladvise speed: 0.21487
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.257136
Iter 7/10: OSS cache speed: 0.233392
Iter 7/10: ladvise speed: 0.277284
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.226546
Iter 8/10: OSS cache speed: 0.203784
Iter 8/10: ladvise speed: 0.200477
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.223928
Iter 9/10: OSS cache speed: 0.273862
Iter 9/10: ladvise speed: 0.261887
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.250272
Iter 10/10: OSS cache speed: 0.278905
Iter 10/10: ladvise speed: 0.226454
Average uncached read: .23
Average speedup with OSS cached read:  .23 = +0%
Average speedup with ladvise willread:  .23 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0