== sanity test 255a: check 'lfs ladvise -a willread' ===== 01:54:53 (1785390893)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 15.899 s, 6.6 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-ffff9cfe863db800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.232345
Iter 1/10: OSS cache speed: 0.224671
Iter 1/10: ladvise speed: 0.268064
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.240405
Iter 2/10: OSS cache speed: 0.253009
Iter 2/10: ladvise speed: 0.206534
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.260977
Iter 3/10: OSS cache speed: 0.249294
Iter 3/10: ladvise speed: 0.299573
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.206008
Iter 4/10: OSS cache speed: 0.262168
Iter 4/10: ladvise speed: 0.176704
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.21874
Iter 5/10: OSS cache speed: 0.229914
Iter 5/10: ladvise speed: 0.230712
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.210563
Iter 6/10: OSS cache speed: 0.248544
Iter 6/10: ladvise speed: 0.26397
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.253388
Iter 7/10: OSS cache speed: 0.227076
Iter 7/10: ladvise speed: 0.273017
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.288693
Iter 8/10: OSS cache speed: 0.202409
Iter 8/10: ladvise speed: 0.225871
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.229144
Iter 9/10: OSS cache speed: 0.306255
Iter 9/10: ladvise speed: 0.228686
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.279702
Iter 10/10: OSS cache speed: 0.222215
Iter 10/10: ladvise speed: 0.259406
Average uncached read: .24
Average speedup with OSS cached read:  .24 = +0%
Average speedup with ladvise willread:  .24 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0