From: Simon Horman <horms@kernel.org>
To: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Cc: intel-wired-lan@lists.osuosl.org, anthony.l.nguyen@intel.com,
netdev@vger.kernel.org, Jacob Keller <jacob.e.keller@intel.com>
Subject: Re: [Intel-wired-lan] [PATCH iwl-next 6/10] ice: increase OICR interrupt moderation rate to 20K interrupts/sec
Date: Tue, 14 Apr 2026 10:33:17 +0100 [thread overview]
Message-ID: <20260414093317.GY469338@kernel.org> (raw)
In-Reply-To: <20260410074921.1254213-7-aleksandr.loktionov@intel.com>
On Fri, Apr 10, 2026 at 09:49:17AM +0200, Aleksandr Loktionov wrote:
> The miscellaneous interrupt cause (OICR) is throttled to 8K
> interrupts per second (124 us minimum spacing). This interrupt
> handles VF mailbox messages and Tx timestamps, so the low rate
> imposes a minimum latency floor on both use-cases.
>
> Raise the rate to 20K interrupts per second (50 us minimum
> spacing) to allow lower latency handling for Tx timestamp
> bursts and high VF message rates.
>
> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
> Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
WARNING: multiple messages have this Message-ID (diff)
From: Simon Horman <horms@kernel.org>
To: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Cc: intel-wired-lan@lists.osuosl.org, anthony.l.nguyen@intel.com,
netdev@vger.kernel.org, Jacob Keller <jacob.e.keller@intel.com>
Subject: Re: [PATCH iwl-next 6/10] ice: increase OICR interrupt moderation rate to 20K interrupts/sec
Date: Tue, 14 Apr 2026 10:33:17 +0100 [thread overview]
Message-ID: <20260414093317.GY469338@kernel.org> (raw)
In-Reply-To: <20260410074921.1254213-7-aleksandr.loktionov@intel.com>
On Fri, Apr 10, 2026 at 09:49:17AM +0200, Aleksandr Loktionov wrote:
> The miscellaneous interrupt cause (OICR) is throttled to 8K
> interrupts per second (124 us minimum spacing). This interrupt
> handles VF mailbox messages and Tx timestamps, so the low rate
> imposes a minimum latency floor on both use-cases.
>
> Raise the rate to 20K interrupts per second (50 us minimum
> spacing) to allow lower latency handling for Tx timestamp
> bursts and high VF message rates.
>
> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
> Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
next prev parent reply other threads:[~2026-04-14 9:33 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-10 7:49 [Intel-wired-lan] [PATCH iwl-next 0/10] ice: misc cleanups and improvements Aleksandr Loktionov
2026-04-10 7:49 ` Aleksandr Loktionov
2026-04-10 7:49 ` [Intel-wired-lan] [PATCH iwl-next 1/10] ice: translate FW to SW for max num TCs encoding Aleksandr Loktionov
2026-04-10 7:49 ` Aleksandr Loktionov
2026-04-14 8:44 ` [Intel-wired-lan] " Simon Horman
2026-04-14 8:44 ` Simon Horman
2026-05-08 15:32 ` [Intel-wired-lan] " Nowlin, Alexander
2026-05-08 15:32 ` Nowlin, Alexander
2026-04-10 7:49 ` [Intel-wired-lan] [PATCH iwl-next 2/10] ice: allow setting advertised speed and duplex for all media types Aleksandr Loktionov
2026-04-10 7:49 ` Aleksandr Loktionov
2026-04-14 9:04 ` [Intel-wired-lan] " Simon Horman
2026-04-14 9:04 ` Simon Horman
2026-05-08 15:33 ` [Intel-wired-lan] " Nowlin, Alexander
2026-05-08 15:33 ` Nowlin, Alexander
2026-04-10 7:49 ` [Intel-wired-lan] [PATCH iwl-next 3/10] ice: add PORT_AUI and PORT_NONE ethtool port type reporting Aleksandr Loktionov
2026-04-10 7:49 ` Aleksandr Loktionov
2026-05-08 15:33 ` [Intel-wired-lan] " Nowlin, Alexander
2026-05-08 15:33 ` Nowlin, Alexander
2026-04-10 7:49 ` [Intel-wired-lan] [PATCH iwl-next 4/10] ice: reorder ice_flash_info fields to eliminate padding Aleksandr Loktionov
2026-04-10 7:49 ` Aleksandr Loktionov
2026-04-14 9:16 ` [Intel-wired-lan] " Simon Horman
2026-04-14 9:16 ` Simon Horman
2026-05-08 15:34 ` [Intel-wired-lan] " Nowlin, Alexander
2026-05-08 15:34 ` Nowlin, Alexander
2026-04-10 7:49 ` [Intel-wired-lan] [PATCH iwl-next 5/10] ice: improve Add/Update VSI error messages in ice_vsi_init() Aleksandr Loktionov
2026-04-10 7:49 ` Aleksandr Loktionov
2026-04-14 9:30 ` [Intel-wired-lan] " Simon Horman
2026-04-14 9:30 ` Simon Horman
2026-05-08 15:34 ` [Intel-wired-lan] " Nowlin, Alexander
2026-05-08 15:34 ` Nowlin, Alexander
2026-04-10 7:49 ` [Intel-wired-lan] [PATCH iwl-next 6/10] ice: increase OICR interrupt moderation rate to 20K interrupts/sec Aleksandr Loktionov
2026-04-10 7:49 ` Aleksandr Loktionov
2026-04-14 9:33 ` Simon Horman [this message]
2026-04-14 9:33 ` Simon Horman
2026-05-08 15:35 ` [Intel-wired-lan] " Nowlin, Alexander
2026-05-08 15:35 ` Nowlin, Alexander
2026-04-10 7:49 ` [Intel-wired-lan] [PATCH iwl-next 7/10] ice: emit user-visible info message for non-contiguous ETS TC config Aleksandr Loktionov
2026-04-10 7:49 ` Aleksandr Loktionov
2026-04-14 9:35 ` [Intel-wired-lan] " Simon Horman
2026-04-14 9:35 ` Simon Horman
2026-05-08 15:36 ` [Intel-wired-lan] " Nowlin, Alexander
2026-05-08 15:36 ` Nowlin, Alexander
2026-04-10 7:49 ` [Intel-wired-lan] [PATCH iwl-next 8/10] ice: move ice_phy_get_speed_eth56g() from ice_ptp_hw.c to ice_common.c Aleksandr Loktionov
2026-04-10 7:49 ` Aleksandr Loktionov
2026-04-14 9:38 ` [Intel-wired-lan] " Simon Horman
2026-04-14 9:38 ` Simon Horman
2026-05-08 15:37 ` [Intel-wired-lan] " Nowlin, Alexander
2026-05-08 15:37 ` Nowlin, Alexander
2026-04-10 7:49 ` [Intel-wired-lan] [PATCH iwl-next 9/10] ice: use inline helpers instead of memcmp() for IPv6 mask checks in ice_ethtool_fdir Aleksandr Loktionov
2026-04-10 7:49 ` Aleksandr Loktionov
2026-04-14 9:39 ` [Intel-wired-lan] " Simon Horman
2026-04-14 9:39 ` Simon Horman
2026-05-08 15:38 ` [Intel-wired-lan] " Nowlin, Alexander
2026-05-08 15:38 ` Nowlin, Alexander
2026-04-10 7:49 ` [Intel-wired-lan] [PATCH iwl-next 10/10] ice: promote Tx FIFO drain timeout message from dev_dbg to dev_warn Aleksandr Loktionov
2026-04-10 7:49 ` Aleksandr Loktionov
2026-04-14 9:39 ` [Intel-wired-lan] " Simon Horman
2026-04-14 9:39 ` Simon Horman
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