== sanity test 255a: check 'lfs ladvise -a willread' ===== 20:43:00 (1773103380)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 5.44603 s, 19.3 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-ffff9b9dc9a01000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.13616
Iter 1/10: OSS cache speed: 2.07721
Iter 1/10: ladvise speed: 1.9942
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.91718
Iter 2/10: OSS cache speed: 1.95485
Iter 2/10: ladvise speed: 2.07312
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.23906
Iter 3/10: OSS cache speed: 2.0849
Iter 3/10: ladvise speed: 1.92527
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.82443
Iter 4/10: OSS cache speed: 2.02725
Iter 4/10: ladvise speed: 2.12832
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.11954
Iter 5/10: OSS cache speed: 2.11811
Iter 5/10: ladvise speed: 2.1378
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.97087
Iter 6/10: OSS cache speed: 1.95516
Iter 6/10: ladvise speed: 2.0177
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.07052
Iter 7/10: OSS cache speed: 2.03282
Iter 7/10: ladvise speed: 2.07495
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.05931
Iter 8/10: OSS cache speed: 2.06731
Iter 8/10: ladvise speed: 1.95877
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.08047
Iter 9/10: OSS cache speed: 1.95488
Iter 9/10: ladvise speed: 2.03196
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.04659
Iter 10/10: OSS cache speed: 2.0664
Iter 10/10: ladvise speed: 2.01645
Average uncached read: 2.04
Average speedup with OSS cached read:  2.03 = +0%
Average speedup with ladvise willread:  2.03 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0