10GbE iSCSI tuning

[dwright1542]

check array write caching, and read caching is enabled.

can try some tweaks on targets too:
1. From the console, press CTRL+ALT+W,
2. Select Tuning options -> iSCSI daemon options -> Target options,
3. Select the target in question,
4. change the MaxRecvDataSegmentLength and MaxXmitDataSegmentLength values to the
maximal required data size (check w/ the initiator to match).
maxRecvDataSegmentLen=262144
MaxBurstLength=16776192
Maxxmitdatasegment=262144
FirstBurstLength=65536
DataDigest=None
maxoutstandingr2t=8
InitialR2T=No
ImmediateData=Yes
headerDigest=None
Wthreads=8

make sure the software initators in vmware match these settings too.

can also up to jumbo frames on the cards.

Yup already done. Its the read/write disparity that has me confused....

[dwright1542]

Yup already done. Its the read/write disparity that has me confused....

So still getting VERY poor read performance. Write performance is very good.

Does ANYONE have an idea, or do I go back to Openfiler? (I've now tried DSS 3 times, and have ended up back at OF every time)