Look like you got 1 firmware reset at [128699.602022] which takes about 4 secs to get back to normal from the tx flow throughput issue. iwl_force_reset(IWL_RF_RESET) is the radio reset when the throughput drop detected through the ack_count ratio < 50% and the number of agg block ack time out exceed 5. This function call will be ignored if it is called within 3 secs. Which NIC do you run the test from? Thanks, Trieu "Andrew" Nguyen -----Original Message----- From: amluto@xxxxxxxxx [mailto:amluto@xxxxxxxxx] On Behalf Of Andrew Lutomirski Sent: Tuesday, February 16, 2010 11:42 AM To: Nguyen, TrieuX T; ipw3945-devel@xxxxxxxxxxxxxxxxxxxxx; linux-wireless@xxxxxxxxxxxxxxx; Chatre, Reinette Subject: "Monitor and recover the aggregation TX flow failure" goes a little bit nuts I'm running the changeset "iwlwifi: Monitor and recover the aggregation TX flow failure" on something resembling 2.6.33-rc7, and I'm getting lots of lag on my connections and stuff like this in dmesg: [128694.380917] iwlagn 0000:03:00.0: iwl_tx_agg_start on ra = 00:21:d8:49:d6:f2 tid = 0 [128695.217054] call iwl_force_reset(IWL_RF_RESET) [128697.515296] call iwl_force_reset(IWL_RF_RESET) [128698.034922] call iwl_force_reset(IWL_RF_RESET) [128699.602022] call iwl_force_reset(IWL_FW_RESET) [128699.710573] iwlagn 0000:03:00.0: Stopping AGG while state not ON or starting [128699.710586] iwlagn 0000:03:00.0: queue number out of range: 0, must be 10 to 19 [128701.623101] iwlagn 0000:03:00.0: iwl_tx_agg_start on ra = 00:21:d8:49:d6:f2 tid = 0 [128702.526568] call iwl_force_reset(IWL_RF_RESET) [128703.570138] call iwl_force_reset(IWL_RF_RESET) [128707.437103] call iwl_force_reset(IWL_RF_RESET) [128707.649877] call iwl_force_reset(IWL_RF_RESET) [128707.959510] call iwl_force_reset(IWL_RF_RESET) [128709.734898] call iwl_force_reset(IWL_RF_RESET) [128710.778607] call iwl_force_reset(IWL_RF_RESET) [128712.554917] call iwl_force_reset(IWL_RF_RESET) [128712.868074] call iwl_force_reset(IWL_FW_RESET) [128715.166000] call iwl_force_reset(IWL_RF_RESET) [128717.569235] call iwl_force_reset(IWL_RF_RESET) [128791.830914] call iwl_force_reset(IWL_RF_RESET) [128794.441324] call iwl_force_reset(IWL_RF_RESET) [128795.903410] call iwl_force_reset(IWL_RF_RESET) [128797.366627] call iwl_force_reset(IWL_RF_RESET) [128799.245967] call iwl_force_reset(IWL_RF_RESET) [128804.260292] call iwl_force_reset(IWL_RF_RESET) [128806.245023] call iwl_force_reset(IWL_RF_RESET) [128807.709088] call iwl_force_reset(IWL_RF_RESET) [128810.735958] call iwl_force_reset(IWL_RF_RESET) [128823.061684] call iwl_force_reset(IWL_RF_RESET) This is with the following extra patch: diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c index 0d09f57..f39f693 100644 --- a/drivers/net/wireless/iwlwifi/iwl-rx.c +++ b/drivers/net/wireless/iwlwifi/iwl-rx.c @@ -678,10 +678,12 @@ void iwl_rx_statistics(struct iwl_priv *priv, BA_TIMEOUT_MAX)) { IWL_DEBUG_RADIO(priv, "call iwl_force_reset(IWL_FW_RESET)\n"); + printk(KERN_ERR "call iwl_force_reset(IWL_FW_RESET)\n"); iwl_force_reset(priv, IWL_FW_RESET); } else { IWL_DEBUG_RADIO(priv, "call iwl_force_reset(IWL_RF_RESET)\n"); + printk(KERN_ERR "call iwl_force_reset(IWL_RF_RESET)\n"); iwl_force_reset(priv, IWL_RF_RESET); } } Something's wrong here, I think. This is probably related to bug #2120 (http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2120). --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
