== sanity test 255a: check 'lfs ladvise -a willread' ===== 02:39:37 (1788590377)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.523 s, 8.4 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-ffff9f7806af4000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.413805
Iter 1/10: OSS cache speed: 0.422544
Iter 1/10: ladvise speed: 0.406527
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.358986
Iter 2/10: OSS cache speed: 0.369625
Iter 2/10: ladvise speed: 0.379312
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.371979
Iter 3/10: OSS cache speed: 0.430737
Iter 3/10: ladvise speed: 0.402676
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.397536
Iter 4/10: OSS cache speed: 0.366477
Iter 4/10: ladvise speed: 0.382874
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.393337
Iter 5/10: OSS cache speed: 0.388068
Iter 5/10: ladvise speed: 0.391044
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.40907
Iter 6/10: OSS cache speed: 0.412826
Iter 6/10: ladvise speed: 0.441578
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.422009
Iter 7/10: OSS cache speed: 0.415197
Iter 7/10: ladvise speed: 0.428232
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.439689
Iter 8/10: OSS cache speed: 0.432842
Iter 8/10: ladvise speed: 0.465616
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.468759
Iter 9/10: OSS cache speed: 0.373958
Iter 9/10: ladvise speed: 0.404557
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.442731
Iter 10/10: OSS cache speed: 0.440561
Iter 10/10: ladvise speed: 0.398672
Average uncached read: .41
Average speedup with OSS cached read:  .40 = +-2%
Average speedup with ladvise willread:  .41 = +0%
Speedup with OSS cached read less than 20%,  got -2%. Skipping ladvise willread check.
fail_loc=0