== sanity test 255a: check 'lfs ladvise -a willread' ===== 05:09:55 (1726304995)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.84707 s, 36.8 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-ffff8800b62fd000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.48277
Iter 1/10: OSS cache speed: 2.47893
Iter 1/10: ladvise speed: 2.47462
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.53232
Iter 2/10: OSS cache speed: 2.5189
Iter 2/10: ladvise speed: 2.51025
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.51508
Iter 3/10: OSS cache speed: 2.48928
Iter 3/10: ladvise speed: 2.64985
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.50507
Iter 4/10: OSS cache speed: 2.61426
Iter 4/10: ladvise speed: 2.6575
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.57717
Iter 5/10: OSS cache speed: 2.63167
Iter 5/10: ladvise speed: 2.54259
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.50265
Iter 6/10: OSS cache speed: 2.41361
Iter 6/10: ladvise speed: 2.69319
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.61446
Iter 7/10: OSS cache speed: 2.65193
Iter 7/10: ladvise speed: 2.74304
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.60411
Iter 8/10: OSS cache speed: 2.62262
Iter 8/10: ladvise speed: 2.72031
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.71196
Iter 9/10: OSS cache speed: 2.7409
Iter 9/10: ladvise speed: 2.74261
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.6382
Iter 10/10: OSS cache speed: 2.77472
Iter 10/10: ladvise speed: 2.57853
Average uncached read: 2.56
Average speedup with OSS cached read: 2.59 = +1.17%
Average speedup with ladvise willread: 2.63 = +2.73%
Speedup with OSS cached read less than 20%, got 1.17%. Skipping ladvise willread check.
fail_loc=0