== sanity test 255a: check 'lfs ladvise -a willread' ===== 02:51:45 (1747810305)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.4318 s, 43.1 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-ffff8800b58ad800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.65633
Iter 1/10: OSS cache speed: 2.73847
Iter 1/10: ladvise speed: 2.75921
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.84214
Iter 2/10: OSS cache speed: 2.83971
Iter 2/10: ladvise speed: 2.79031
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.74734
Iter 3/10: OSS cache speed: 2.81926
Iter 3/10: ladvise speed: 2.43479
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.22237
Iter 4/10: OSS cache speed: 2.73278
Iter 4/10: ladvise speed: 2.8787
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.86438
Iter 5/10: OSS cache speed: 2.74166
Iter 5/10: ladvise speed: 2.79771
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.74959
Iter 6/10: OSS cache speed: 2.68997
Iter 6/10: ladvise speed: 2.81198
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.78156
Iter 7/10: OSS cache speed: 2.54961
Iter 7/10: ladvise speed: 2.33573
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.87828
Iter 8/10: OSS cache speed: 2.35697
Iter 8/10: ladvise speed: 1.90112
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.70006
Iter 9/10: OSS cache speed: 1.59191
Iter 9/10: ladvise speed: 1.50808
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.86683
Iter 10/10: OSS cache speed: 2.48328
Iter 10/10: ladvise speed: 2.3927
Average uncached read: 2.53
Average speedup with OSS cached read:  2.55 = +0%
Average speedup with ladvise willread:  2.46 = +-2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0