== sanity test 255a: check 'lfs ladvise -a willread' ===== 05:38:07 (1730803087)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.86952 s, 36.5 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-ffff8800b6eaa800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 3.01927
Iter 1/10: OSS cache speed: 3.32874
Iter 1/10: ladvise speed: 3.28203
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.84218
Iter 2/10: OSS cache speed: 3.31606
Iter 2/10: ladvise speed: 3.26924
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.93688
Iter 3/10: OSS cache speed: 3.18683
Iter 3/10: ladvise speed: 3.32016
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.97793
Iter 4/10: OSS cache speed: 3.3724
Iter 4/10: ladvise speed: 3.39134
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.98883
Iter 5/10: OSS cache speed: 3.29104
Iter 5/10: ladvise speed: 3.41222
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 3.05922
Iter 6/10: OSS cache speed: 3.20152
Iter 6/10: ladvise speed: 3.33808
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 3.0251
Iter 7/10: OSS cache speed: 3.34187
Iter 7/10: ladvise speed: 3.36124
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.95012
Iter 8/10: OSS cache speed: 3.33463
Iter 8/10: ladvise speed: 3.46401
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.97824
Iter 9/10: OSS cache speed: 3.32533
Iter 9/10: ladvise speed: 3.32338
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.91677
Iter 10/10: OSS cache speed: 3.40367
Iter 10/10: ladvise speed: 3.35377
Average uncached read: 2.96
Average speedup with OSS cached read: 3.31 = +11.82%
Average speedup with ladvise willread: 3.35 = +13.17%
Speedup with OSS cached read less than 20%, got 11.82%. Skipping ladvise willread check.
fail_loc=0