== sanity test 255a: check 'lfs ladvise -a willread' ===== 15:26:52 (1713209212)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.66782 s, 39.3 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
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.60871
Iter 1/10: OSS cache speed: 2.55512
Iter 1/10: ladvise speed: 2.18253
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.22181
Iter 2/10: OSS cache speed: 2.59746
Iter 2/10: ladvise speed: 2.50188
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.44572
Iter 3/10: OSS cache speed: 2.61134
Iter 3/10: ladvise speed: 2.53461
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.81095
Iter 4/10: OSS cache speed: 2.64969
Iter 4/10: ladvise speed: 2.73814
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 3.01859
Iter 5/10: OSS cache speed: 2.81444
Iter 5/10: ladvise speed: 2.70719
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.62485
Iter 6/10: OSS cache speed: 2.70808
Iter 6/10: ladvise speed: 2.58786
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.70386
Iter 7/10: OSS cache speed: 2.72451
Iter 7/10: ladvise speed: 2.73668
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.83431
Iter 8/10: OSS cache speed: 2.8501
Iter 8/10: ladvise speed: 2.74674
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.82441
Iter 9/10: OSS cache speed: 2.8246
Iter 9/10: ladvise speed: 2.88738
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.92425
Iter 10/10: OSS cache speed: 2.84257
Iter 10/10: ladvise speed: 2.79836
Average uncached read: 2.70
Average speedup with OSS cached read: 2.71 = +.37%
Average speedup with ladvise willread: 2.64 = +-2.22%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 24278:   < 20 : < 20 : syntax error: operand expected (error token is "< 20 ")
lfs ladvise: cannot give advice: Unknown error 524 (524)
ladvise: cannot give advice 'dontneed' to file '/mnt/lustre/f255a.sanity': Unknown error 524
osd-zfs does not support dontneed or drop_caches
fail_loc=0