== sanity test 255a: check 'lfs ladvise -a willread' ===== 05:23:50 (1744536230)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.18364 s, 48.0 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-ffff8800b6ccd000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.62365
Iter 1/10: OSS cache speed: 2.74977
Iter 1/10: ladvise speed: 2.16108
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.37626
Iter 2/10: OSS cache speed: 2.42609
Iter 2/10: ladvise speed: 2.28739
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.61125
Iter 3/10: OSS cache speed: 2.69308
Iter 3/10: ladvise speed: 2.82795
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.62453
Iter 4/10: OSS cache speed: 2.54279
Iter 4/10: ladvise speed: 2.87177
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.83961
Iter 5/10: OSS cache speed: 2.84334
Iter 5/10: ladvise speed: 2.8381
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.69714
Iter 6/10: OSS cache speed: 2.55347
Iter 6/10: ladvise speed: 2.6068
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.64849
Iter 7/10: OSS cache speed: 2.56397
Iter 7/10: ladvise speed: 2.60606
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.62658
Iter 8/10: OSS cache speed: 2.66746
Iter 8/10: ladvise speed: 2.53473
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.59459
Iter 9/10: OSS cache speed: 2.61689
Iter 9/10: ladvise speed: 2.78287
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.59339
Iter 10/10: OSS cache speed: 2.64389
Iter 10/10: ladvise speed: 2.74178
Average uncached read: 2.62
Average speedup with OSS cached read:  2.63 = +0%
Average speedup with ladvise willread:  2.62 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0