== sanity test 255a: check 'lfs ladvise -a willread' ===== 18:22:12 (1718317332)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 3.52649 s, 29.7 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-ffff88012aae5800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.05638
Iter 1/10: OSS cache speed: 0.660437
Iter 1/10: ladvise speed: 0.666609
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.643446
Iter 2/10: OSS cache speed: 0.924652
Iter 2/10: ladvise speed: 2.32127
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.33613
Iter 3/10: OSS cache speed: 2.43869
Iter 3/10: ladvise speed: 2.09723
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.50428
Iter 4/10: OSS cache speed: 2.49014
Iter 4/10: ladvise speed: 2.18206
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.50586
Iter 5/10: OSS cache speed: 2.28986
Iter 5/10: ladvise speed: 1.93125
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.5615
Iter 6/10: OSS cache speed: 2.73482
Iter 6/10: ladvise speed: 2.62326
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.79095
Iter 7/10: OSS cache speed: 1.51472
Iter 7/10: ladvise speed: 1.59536
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.74312
Iter 8/10: OSS cache speed: 2.02767
Iter 8/10: ladvise speed: 1.65358
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.04839
Iter 9/10: OSS cache speed: 1.49558
Iter 9/10: ladvise speed: 1.84965
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.96956
Iter 10/10: OSS cache speed: 1.91054
Iter 10/10: ladvise speed: 2.13039
Average uncached read: 1.91
Average speedup with OSS cached read: 1.84 = +-3.66%
Average speedup with ladvise willread: 1.90 = +-.52%
Speedup with OSS cached read less than 20%, got -3.66%. Skipping ladvise willread check.
fail_loc=0