Bug 212179 - qlogic 24xx series read speed limit
Summary: qlogic 24xx series read speed limit
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 10.3-STABLE
Hardware: Any Any
: --- Affects Some People
Assignee: freebsd-bugs mailing list
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-08-26 12:59 UTC by Mangelot
Modified: 2016-08-26 12:59 UTC (History)
0 users

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Description Mangelot 2016-08-26 12:59:24 UTC
Qlogic 2464 (my own quad port HBA) target read speed limited with kernel driver isp(4)

Multiple people are complaining of a issue with qlogic 24xx series cards
that the read speed in target mode is limited (+/-200MB/s) 
and write speed +/-390MB/s (which is okay). 

Its reported in freenas versions (based on freebsd) but freenas isn't supporting target mode officially.they tested it and confirmed the issue an they told me it solved by setting link to point-to-point (which didn't help).
they also confirmed that te issue isn't with 25xx cards...


https://bugs.freenas.org/attachments/6577/screenshot2.png
https://bugs.freenas.org/attachments/6576/screenshot.png