4 ms·
Throughput speed is not everything, in many situations latency is more important. Can you give results for this? dd if=/dev/zero of=test bs=512 count=1500 ofla
by Nux 13y ago
Throughput speed is not everything, in many situations latency is more important. Can you give results for this?
dd if=/dev/zero of=test bs=512 count=1500 oflag=dsync
I'm getting "6.40264 s, 120 kB/s" on my laptop's SSD, but on a proper server with a RAID card and cache enabled I get "0.187033 s, 4.1 MB/s".
- kbrower 13y agodd if=/dev/zero of=test bs=512 count=1500 oflag=dsync 768000 bytes (768 kB) copied, 0.3325 s, 2.3 MB/s
- ausjke 13y agodd if=/dev/zero of=test bs=512 count=1500 oflag=dsync 768000 bytes (768 kB) copied, 0.45329 s, 1.7 MB/s
- kyrra 13y agoI did 7 runs of your test and the average time is: 0.424795s. Example run: $ dd if=/dev/zero of=test bs=512 count=1500 oflag=dsync 1500+0 records in 1500+0 records out 768000 bytes (768 kB) copied, 0.427272 s, 1.8 MB/s
- lloeki 13y agoDO @5$/mo: $ dd if=/dev/zero of=test bs=512 count=1500 oflag=dsync 1500+0 records in 1500+0 records out 768000 bytes (768 kB) copied, 1.64471 s, 467 kB/s
- diorray 13y agoDO @$40-AMS1 1500+0 records in 1500+0 records out 768000 bytes (768 kB) copied, 1.17399 s, 654 kB/s