[
https://issues.apache.org/jira/browse/HDDS-3223?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
runzhiwang updated HDDS-3223:
-----------------------------
Description:
By s3gateway, write a 187MB file cost 5 seconds, but read it cost 17 seconds. I
use {code:java}tcpdump -i eth0 -s 0 -A 'tcp dst port 9878 and tcp[((tcp[12:1] &
0xf0) >> 2):4] = 0x47455420' -w read.cap{code} to capture the packet of read
request , just as the image shows. The first 10 GET requests arrive from 3.54
second to 3.56 second. But the next 14 GET requests arrive from 4.41 second to
12.23 second. I think the reason is in aws-cli.
!screenshot-3.png!
was:
By s3gateway, write a 187MB file cost 5 seconds, but read it cost 17 seconds. I
use tcpdump to capture the packet of read request, just as the image shows. The
first 10 GET requests arrive from 3.54 second to 3.56 second. But the next 14
GET requests arrive from 4.41 second to 12.23 second. I think the reason is in
aws-cli.
!screenshot-3.png!
> Read a big object cost 2 times more than write it by s3g
> --------------------------------------------------------
>
> Key: HDDS-3223
> URL: https://issues.apache.org/jira/browse/HDDS-3223
> Project: Hadoop Distributed Data Store
> Issue Type: Improvement
> Reporter: runzhiwang
> Assignee: runzhiwang
> Priority: Major
> Attachments: screenshot-1.png, screenshot-2.png, screenshot-3.png
>
>
> By s3gateway, write a 187MB file cost 5 seconds, but read it cost 17 seconds.
> I use {code:java}tcpdump -i eth0 -s 0 -A 'tcp dst port 9878 and
> tcp[((tcp[12:1] & 0xf0) >> 2):4] = 0x47455420' -w read.cap{code} to capture
> the packet of read request , just as the image shows. The first 10 GET
> requests arrive from 3.54 second to 3.56 second. But the next 14 GET requests
> arrive from 4.41 second to 12.23 second. I think the reason is in aws-cli.
> !screenshot-3.png!
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
