== sanity test 255a: check 'lfs ladvise -a willread' ===== 15:25:30 (1761247530)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 8.99202 s, 11.7 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-ffff9fb6c4f1b000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.420137
Iter 1/10: OSS cache speed: 0.377168
Iter 1/10: ladvise speed: 0.381188
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.344439
Iter 2/10: OSS cache speed: 0.363938
Iter 2/10: ladvise speed: 0.357183
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.341038
Iter 3/10: OSS cache speed: 0.374464
Iter 3/10: ladvise speed: 0.398938
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.398736
Iter 4/10: OSS cache speed: 0.414029
Iter 4/10: ladvise speed: 0.365972
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.378484
Iter 5/10: OSS cache speed: 0.41726
Iter 5/10: ladvise speed: 0.453734
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.393445
Iter 6/10: OSS cache speed: 0.372476
Iter 6/10: ladvise speed: 0.431272
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.44717
Iter 7/10: OSS cache speed: 0.42982
Iter 7/10: ladvise speed: 0.355913
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.419925
Iter 8/10: OSS cache speed: 0.427053
Iter 8/10: ladvise speed: 0.412259
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.387394
Iter 9/10: OSS cache speed: 0.401769
Iter 9/10: ladvise speed: 0.384207
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.434106
Iter 10/10: OSS cache speed: 0.417315
Iter 10/10: ladvise speed: 0.384291
Average uncached read: .39
Average speedup with OSS cached read:  .39 = +0%
Average speedup with ladvise willread:  .39 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0