== sanity test 255a: check 'lfs ladvise -a willread' ===== 16:21:03 (1717014063)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 5.086 s, 20.6 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-ffff8800b581b000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.886863
Iter 1/10: OSS cache speed: 1.09271
Iter 1/10: ladvise speed: 1.09708
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.872552
Iter 2/10: OSS cache speed: 0.951802
Iter 2/10: ladvise speed: 0.817438
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.881949
Iter 3/10: OSS cache speed: 1.06622
Iter 3/10: ladvise speed: 1.11285
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.03684
Iter 4/10: OSS cache speed: 1.11378
Iter 4/10: ladvise speed: 1.15356
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.02917
Iter 5/10: OSS cache speed: 1.18383
Iter 5/10: ladvise speed: 1.01421
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.01925
Iter 6/10: OSS cache speed: 1.20406
Iter 6/10: ladvise speed: 1.23448
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.2183
Iter 7/10: OSS cache speed: 1.21437
Iter 7/10: ladvise speed: 1.46372
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.31517
Iter 8/10: OSS cache speed: 1.3332
Iter 8/10: ladvise speed: 1.17058
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.01319
Iter 9/10: OSS cache speed: 1.14519
Iter 9/10: ladvise speed: 1.12448
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.0514
Iter 10/10: OSS cache speed: 1.18229
Iter 10/10: ladvise speed: 1.33446
Average uncached read: 1.03
Average speedup with OSS cached read: 1.14 = +10.67%
Average speedup with ladvise willread: 1.15 = +11.65%
Speedup with OSS cached read less than 20%, got 10.67%. Skipping ladvise willread check.
fail_loc=0