== sanity test 255a: check 'lfs ladvise -a willread' ===== 16:24:39 (1717014279)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 4.57018 s, 22.9 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-ffff8800b6e7b800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.981172
Iter 1/10: OSS cache speed: 0.871058
Iter 1/10: ladvise speed: 0.946434
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.910065
Iter 2/10: OSS cache speed: 0.900338
Iter 2/10: ladvise speed: 0.92578
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.905866
Iter 3/10: OSS cache speed: 1.19206
Iter 3/10: ladvise speed: 0.970463
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.911738
Iter 4/10: OSS cache speed: 0.835333
Iter 4/10: ladvise speed: 0.899379
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.890871
Iter 5/10: OSS cache speed: 0.92931
Iter 5/10: ladvise speed: 0.894039
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.926957
Iter 6/10: OSS cache speed: 0.871439
Iter 6/10: ladvise speed: 0.960162
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.00789
Iter 7/10: OSS cache speed: 0.98888
Iter 7/10: ladvise speed: 0.94085
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.857208
Iter 8/10: OSS cache speed: 0.913764
Iter 8/10: ladvise speed: 0.919932
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.897673
Iter 9/10: OSS cache speed: 0.812542
Iter 9/10: ladvise speed: 0.871204
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.987772
Iter 10/10: OSS cache speed: 0.865222
Iter 10/10: ladvise speed: 0.904665
Average uncached read: .92
Average speedup with OSS cached read: .91 = +-1.08%
Average speedup with ladvise willread: .92 = +0%
Speedup with OSS cached read less than 20%, got -1.08%. Skipping ladvise willread check.
fail_loc=0