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[Xen-devel] Increase txqueuelen of vif devices
| To: | xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx> |
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| Subject: | [Xen-devel] Increase txqueuelen of vif devices |
| From: | Miroslav Rezanina <mrezanin@xxxxxxxxxx> |
| Date: | Fri, 22 Oct 2010 05:35:25 -0400 (EDT) |
| Delivery-date: | Fri, 22 Oct 2010 02:37:23 -0700 |
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During performance testing we find out that increasing txqueuelen can increase
throughput significantly. Following table shows our results:
txQlen netperf message size
512 byte 4096 byte
-----------------------------------
32 1634.13 8402.32
64 1292.05 14198.48
128 4142.58 14677.39
256 4439.77 14626.80
512 5251.48 14809.59
1024 4875.96 15358.55
Based on this result, shouldn't be good idea to change default txqueuelen?
Physical devices uses txqueuelen of 1000.
Regard,
Mirek
--
Miroslav Rezanina
Software Engineer - Virtualization Team - XEN kernel
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