== sanity test 255a: check 'lfs ladvise -a willread' ===== 19:23:01 (1743204181)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.27412 s, 46.1 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-ffff88012aa0d800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.01738
Iter 1/10: OSS cache speed: 2.22522
Iter 1/10: ladvise speed: 1.84354
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.95654
Iter 2/10: OSS cache speed: 2.42405
Iter 2/10: ladvise speed: 2.6114
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.48409
Iter 3/10: OSS cache speed: 2.72056
Iter 3/10: ladvise speed: 2.64067
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.54265
Iter 4/10: OSS cache speed: 2.78986
Iter 4/10: ladvise speed: 2.85191
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.88667
Iter 5/10: OSS cache speed: 2.80415
Iter 5/10: ladvise speed: 2.79657
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.14923
Iter 6/10: OSS cache speed: 1.86402
Iter 6/10: ladvise speed: 1.98589
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.30251
Iter 7/10: OSS cache speed: 2.47763
Iter 7/10: ladvise speed: 2.35633
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.46644
Iter 8/10: OSS cache speed: 2.50262
Iter 8/10: ladvise speed: 2.40051
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.36424
Iter 9/10: OSS cache speed: 1.7817
Iter 9/10: ladvise speed: 2.16239
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.31856
Iter 10/10: OSS cache speed: 1.95216
Iter 10/10: ladvise speed: 1.76713
Average uncached read: 2.34
Average speedup with OSS cached read:  2.35 = +0%
Average speedup with ladvise willread:  2.34 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0