== sanity test 101a: check read-ahead for random reads === 17:58:58 (1768258738) nreads: 10000 file size: 96MB 176.985753s, 3.7029MB/s osc.lustre-OST0000-osc-ffff9019867ba000.rpc_stats= snapshot_time: 1768258936.325165745 secs.nsecs start_time: 1768258739.823466560 secs.nsecs elapsed_time: 196.501699185 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 1: 0 0 0 | 0 0 0 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 0 0 0 | 0 0 0 16: 0 0 0 | 0 0 0 32: 0 0 0 | 0 0 0 64: 0 0 0 | 0 0 0 128: 0 0 0 | 0 0 0 256: 0 0 0 | 0 0 0 512: 0 0 0 | 0 0 0 1024: 0 0 0 | 0 0 0 2048: 0 0 0 | 0 0 0 4096: 0 0 0 | 0 0 0 8192: 0 0 0 | 0 0 0 16384: 0 0 0 | 2 100 100 osc.lustre-OST0001-osc-ffff9019867ba000.rpc_stats= snapshot_time: 1768258936.325455438 secs.nsecs start_time: 1768258739.823536720 secs.nsecs elapsed_time: 196.501918718 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 1 0 0 | 2 7 7 2: 0 0 0 | 0 0 7 4: 4 0 0 | 0 0 7 8: 3 0 0 | 1 3 10 16: 6544 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6552 100 100 | 27 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 5 0 0 | 0 0 14 32: 7 0 0 | 0 0 14 64: 22 0 0 | 0 0 14 128: 31 0 1 | 0 0 14 256: 70 1 2 | 0 0 14 512: 137 2 4 | 0 0 14 1024: 260 3 8 | 1 3 17 2048: 544 8 16 | 2 7 25 4096: 1083 16 32 | 4 14 39 8192: 2141 32 65 | 8 28 67 16384: 2249 34 100 | 9 32 100 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 1: 0 0 0 | 0 0 0 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 0 0 0 | 0 0 0 16: 0 0 0 | 0 0 0 32: 0 0 0 | 0 0 0 64: 0 0 0 | 0 0 0 128: 0 0 0 | 0 0 0 256: 0 0 0 | 0 0 0 512: 0 0 0 | 0 0 0 1024: 0 0 0 | 0 0 0 2048: 0 0 0 | 0 0 0 4096: 456 6 6 | 0 0 0 8192: 4388 66 73 | 1 3 3 16384: 1666 25 99 | 1 3 7 32768: 196 2 102 | 1 3 10 65536: 1 0 102 | 24 85 96 131072: 0 0 102 | 1 3 100 262144: 0 0 102 | 0 0 100 524288: 0 0 102 | 0 0 100 1048576: 0 0 102 | 0 0 100 2097152: 0 0 102 | 0 0 100 4194304: 0 0 102 | 0 0 100 8388608: 0 0 102 | 0 0 100 16777216: 0 0 102 | 0 0 100 33554432: 0 0 102 | 0 0 100 67108864: 0 0 102 | 0 0 100 134217728: 0 0 102 | 0 0 100 268435456: 0 0 102 | 0 0 100 536870912: 0 0 102 | 0 0 100 1073741824: 0 0 102 | 0 0 100 llite.lustre-ffff9019867ba000.read_ahead_stats= snapshot_time 1768258936.342205922 secs.nsecs start_time 1768258739.855159374 secs.nsecs elapsed_time 196.487046548 secs.nsecs hits 98172 samples [pages] misses 6552 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 98173 samples [pages] failed_to_fast_read 6552 samples [pages] readahead_pages 6551 samples [pages] 2 15 98172