NAPI Disabled for net drivers, bug?
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| linux-source-2.6.15 (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Bug Description
I was doing a frantic install of some servers to use as load balancers and after coming up, their performance was horrid. I was only getting ~ 100kpps in/out of the E1000 Gigabit nic.
After a bit of poking, I noticed interrupt load on the CPU was the bottleneck. I poked further and noticed that none of the NICs in the kernelconfig had NAPI enabled.
I realize I could have compiled my own kernel and gave it a quick try, but the hardware was unfamiliar and so the solution was to install FC5 on the load balancer boxes. I was very very sad about that.
Is this a bug, shall NAPI be enabled like in other distros? BTW, the throughput on the E1000 jumped from 100kpps to 265kpps, which euqated to around 50k web req/sec through LVS, woohoo!
# CONFIG_TULIP_NAPI is not set
# CONFIG_
# CONFIG_
# CONFIG_E1000_NAPI is not set
# CONFIG_R8169_NAPI is not set
# CONFIG_IXGB_NAPI is not set
# CONFIG_S2IO_NAPI is not set
| description: | updated |
| Carlos Diener / emonkey (emonkey) wrote | #1 |
| Changed in linux-source-2.6.15: | |
| status: | New → Incomplete |
| Brak (brak-archive) wrote | #2 |
| Connor Imes (ckimes) wrote | #3 |
| Changed in linux-source-2.6.15: | |
| status: | Incomplete → Fix Released |
Thank you for taking the time to report this bug and helping to make Ubuntu better. You reported this bug a while ago and there hasn't been any activity in it recently. We were wondering is this still an issue for you? Can you try with latest Ubuntu release? Thanks in advance.