[lustre-discuss] Why reads are slower than writes on lustre file system?
Nagmat Nazarov
nagmat at nevada.unr.edu
Mon Sep 27 15:57:31 PDT 2021
Dear Engineers,
I have started working on a lustre file system. I have done couple of
experiments so far:
On the first experiment I am writing 100 files each 10MB and the batch size
is 4K. I got 107MB/s bandwidth.
On the second experiment I am (writing 10 files each 10MB and reading 1 10
MB file back) for 10 times. Here also the average bandwidth is 106MB/s
while read average bandwidth is 59MB/s which is very weird I guess?
My question is, generally on ext4 file systems read average bandwidth is
faster that write average bandwidth, why is it 2 times slower on lustre
file system. My ethernet speed is 1Gb/s.
Kind regards
Nagmat Nazarov
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.lustre.org/pipermail/lustre-discuss-lustre.org/attachments/20210927/d453ae4b/attachment.html>
More information about the lustre-discuss
mailing list