Bug 103138 - (NET E1000) LTC4104-[perf][netperf] poor throughput of e1000 in RHEL 3 B1
(NET E1000) LTC4104-[perf][netperf] poor throughput of e1000 in RHEL 3 B1
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: kernel (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Jeff Garzik
Depends On:
Blocks: 103278
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Reported: 2003-08-26 17:14 EDT by IBM Bug Proxy
Modified: 2013-07-02 22:27 EDT (History)
2 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2003-08-29 15:27:48 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description IBM Bug Proxy 2003-08-26 17:14:20 EDT
The following has be reported by IBM LTC:  
[perf][netperf] poor throughput of e1000 in RHAS 3.0 B1
Hardware Environment:
(2) x335's (2.0 GHz)
NIC on client cabled directly to like NIC on server
specific NIC defined in results section

Software Environment:
RHAS 3.0 B1
netperf-2.2pl3 TCP_STREAM test
results are averages of 5 60-second runs per send msg size
all standard deviations were acceptable (typically much less than 0.20%)
MTU 1500

Steps to Reproduce:
1. Install RHAS 3.0 B1 on client and server
2. Install netperf-2.2pl3 on client and server
3. Run netserver on server side
4. Run 5 60 second netperf TCP_STREAM tests from the client
5. Average the throughputs of all 5 runs, check for acceptable std dev

Actual Results:
Throughput (Mbits/s) per send message size
         1K      2K      4K      8K      16K     32K     64K
tg3      530.62  684.11  809.83  911.62  938.21  940.49  940.50
e1000    475.92  551.26  556.32  554.73  552.14  547.37  470.44

Expected Results:
The throughput for the e1000 driver included in RHAS 3.0 B1
should more more closely match that of tg3.

Additional Information:Glen / Greg
Talked to Barry, he wants problem reported to RedHat.  Thanks
Comment 1 IBM Bug Proxy 2003-08-29 10:49:49 EDT
------ Additional Comments From barndt@us.ibm.com  2003-29-08 10:34 -------
kernel version - vmlinuz-2.4.21-1.1931.2.349.2.2.entsmp 
Comment 2 IBM Bug Proxy 2003-08-29 15:25:57 EDT
------ Additional Comments From barndt@us.ibm.com  2003-29-08 15:11 -------
Bug does not exist in RHEL AS 3.0 beta2, results are very good. 
Comment 3 Arjan van de Ven 2003-08-29 15:27:48 EDT
Based on your comment, I assume there's no objection to closing this issue as
resolved. If this issue needs to be reopened feel free to do so. 

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