== sanity test 255a: check 'lfs ladvise -a willread' ===== 01:13:35 (1788844415)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.1752 s, 9.4 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-ffff955b42c4b800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.450832
Iter 1/10: OSS cache speed: 0.441166
Iter 1/10: ladvise speed: 0.456612
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.488266
Iter 2/10: OSS cache speed: 0.493196
Iter 2/10: ladvise speed: 0.484698
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.465904
Iter 3/10: OSS cache speed: 0.451834
Iter 3/10: ladvise speed: 0.47051
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.47722
Iter 4/10: OSS cache speed: 0.469467
Iter 4/10: ladvise speed: 0.486181
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.472581
Iter 5/10: OSS cache speed: 0.498413
Iter 5/10: ladvise speed: 0.520619
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.494488
Iter 6/10: OSS cache speed: 0.516807
Iter 6/10: ladvise speed: 0.486827
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.47222
Iter 7/10: OSS cache speed: 0.452148
Iter 7/10: ladvise speed: 0.489235
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.502026
Iter 8/10: OSS cache speed: 0.454725
Iter 8/10: ladvise speed: 0.48775
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.443127
Iter 9/10: OSS cache speed: 0.47094
Iter 9/10: ladvise speed: 0.427816
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.493539
Iter 10/10: OSS cache speed: 0.480269
Iter 10/10: ladvise speed: 0.482571
Average uncached read: .47
Average speedup with OSS cached read:  .47 = +0%
Average speedup with ladvise willread:  .47 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0