== sanity test 255a: check 'lfs ladvise -a willread' ===== 11:05:09 (1788361509)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 9.6449 s, 10.9 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-ffff9b7447f67800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.501083
Iter 1/10: OSS cache speed: 0.516835
Iter 1/10: ladvise speed: 0.512261
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.489663
Iter 2/10: OSS cache speed: 0.493834
Iter 2/10: ladvise speed: 0.536972
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.51092
Iter 3/10: OSS cache speed: 0.492348
Iter 3/10: ladvise speed: 0.514752
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.533568
Iter 4/10: OSS cache speed: 0.507098
Iter 4/10: ladvise speed: 0.517779
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.509945
Iter 5/10: OSS cache speed: 0.543294
Iter 5/10: ladvise speed: 0.574407
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.713562
Iter 6/10: OSS cache speed: 0.556775
Iter 6/10: ladvise speed: 0.53401
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.517933
Iter 7/10: OSS cache speed: 0.519799
Iter 7/10: ladvise speed: 0.510906
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.505421
Iter 8/10: OSS cache speed: 0.501895
Iter 8/10: ladvise speed: 0.50788
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.55287
Iter 9/10: OSS cache speed: 0.517606
Iter 9/10: ladvise speed: 0.561334
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.573498
Iter 10/10: OSS cache speed: 0.584161
Iter 10/10: ladvise speed: 0.653299
Average uncached read: .54
Average speedup with OSS cached read:  .52 = +-3%
Average speedup with ladvise willread:  .54 = +0%
Speedup with OSS cached read less than 20%,  got -3%. Skipping ladvise willread check.
fail_loc=0