From: "Rob Mueller" <robm@fastmail.fm>
To: "Christoph Lameter" <cl@linux.com>, "Mel Gorman" <mel@csn.ul.ie>
Cc: "KOSAKI Motohiro" <kosaki.motohiro@jp.fujitsu.com>,
<linux-kernel@vger.kernel.org>,
"Bron Gondwana" <brong@fastmail.fm>,
"linux-mm" <linux-mm@kvack.org>
Subject: Re: Default zone_reclaim_mode = 1 on NUMA kernel is bad forfile/email/web servers
Date: Wed, 22 Sep 2010 13:44:51 +1000 [thread overview]
Message-ID: <F4A6AD940A32478B9CDE3EACAF33BC9D@jem> (raw)
In-Reply-To: alpine.DEB.2.00.1009210911270.1271@router.home
> This could be a screwy hardware issue as pointed out before. Certain
> controllers restrict the memory that I/O can be done to also (32 bit
> controller only able to do I/O to lower 2G?, controller on a PCI bus that
> is local only to a particular node) which would make balancing
> the file cache difficult.
Ah interesting. Is there an easy way to tell if this is an issue? It's an
ARECA RAID controller, this is the lspci -vvv data from it...
03:00.0 RAID bus controller: Areca Technology Corp. Device 1680
Subsystem: Areca Technology Corp. Device 1680
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 26
Region 0: Memory at b1900000 (32-bit, non-prefetchable) [size=8K]
Expansion ROM at b1c00000 [disabled] [size=64K]
Capabilities: [98] Power Management version 2
Flags: PMEClk- DSI- D1+ D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [a0] Message Signalled Interrupts: Mask- 64bit+
Queue=0/1 Enable-
Address: 0000000000000000 Data: 0000
Capabilities: [d0] Express (v1) Endpoint, MSI 00
DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s
unlimited, L1 <1us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable+ Non-Fatal+ Fatal+
Unsupported+
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
MaxPayload 256 bytes, MaxReadReq 256 bytes
DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr-
TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x8, ASPM unknown,
Latency L0 <128ns, L1 unlimited
ClockPM- Suprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain-
CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x8, TrErr- Train- SlotClk+
DLActive- BWMgmt- ABWMgmt-
Capabilities: [100] Advanced Error Reporting <?>
Kernel driver in use: arcmsr
Rob
WARNING: multiple messages have this Message-ID (diff)
From: "Rob Mueller" <robm@fastmail.fm>
To: Christoph Lameter <cl@linux.com>, Mel Gorman <mel@csn.ul.ie>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
linux-kernel@vger.kernel.org, Bron Gondwana <brong@fastmail.fm>,
linux-mm <linux-mm@kvack.org>
Subject: Re: Default zone_reclaim_mode = 1 on NUMA kernel is bad forfile/email/web servers
Date: Wed, 22 Sep 2010 13:44:51 +1000 [thread overview]
Message-ID: <F4A6AD940A32478B9CDE3EACAF33BC9D@jem> (raw)
In-Reply-To: alpine.DEB.2.00.1009210911270.1271@router.home
> This could be a screwy hardware issue as pointed out before. Certain
> controllers restrict the memory that I/O can be done to also (32 bit
> controller only able to do I/O to lower 2G?, controller on a PCI bus that
> is local only to a particular node) which would make balancing
> the file cache difficult.
Ah interesting. Is there an easy way to tell if this is an issue? It's an
ARECA RAID controller, this is the lspci -vvv data from it...
03:00.0 RAID bus controller: Areca Technology Corp. Device 1680
Subsystem: Areca Technology Corp. Device 1680
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 26
Region 0: Memory at b1900000 (32-bit, non-prefetchable) [size=8K]
Expansion ROM at b1c00000 [disabled] [size=64K]
Capabilities: [98] Power Management version 2
Flags: PMEClk- DSI- D1+ D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [a0] Message Signalled Interrupts: Mask- 64bit+
Queue=0/1 Enable-
Address: 0000000000000000 Data: 0000
Capabilities: [d0] Express (v1) Endpoint, MSI 00
DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s
unlimited, L1 <1us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable+ Non-Fatal+ Fatal+
Unsupported+
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
MaxPayload 256 bytes, MaxReadReq 256 bytes
DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr-
TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x8, ASPM unknown,
Latency L0 <128ns, L1 unlimited
ClockPM- Suprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain-
CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x8, TrErr- Train- SlotClk+
DLActive- BWMgmt- ABWMgmt-
Capabilities: [100] Advanced Error Reporting <?>
Kernel driver in use: arcmsr
Rob
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next prev parent reply other threads:[~2010-09-22 3:45 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-13 3:39 Default zone_reclaim_mode = 1 on NUMA kernel is bad for file/email/web servers Robert Mueller
2010-09-16 10:01 ` KOSAKI Motohiro
2010-09-16 10:01 ` KOSAKI Motohiro
2010-09-16 17:06 ` Christoph Lameter
2010-09-16 17:06 ` Christoph Lameter
2010-09-17 0:50 ` Robert Mueller
2010-09-17 0:50 ` Robert Mueller
2010-09-17 6:01 ` Shaohua Li
2010-09-17 6:01 ` Shaohua Li
2010-09-17 7:32 ` Robert Mueller
2010-09-17 7:32 ` Robert Mueller
2010-09-17 13:56 ` Christoph Lameter
2010-09-17 13:56 ` Christoph Lameter
2010-09-17 14:09 ` Bron Gondwana
2010-09-17 14:09 ` Bron Gondwana
2010-09-17 14:22 ` Christoph Lameter
2010-09-17 14:22 ` Christoph Lameter
2010-09-17 23:01 ` Bron Gondwana
2010-09-17 23:01 ` Bron Gondwana
2010-09-20 9:34 ` Mel Gorman
2010-09-20 9:34 ` Mel Gorman
2010-09-20 23:41 ` Default zone_reclaim_mode = 1 on NUMA kernel is bad forfile/email/web servers Rob Mueller
2010-09-20 23:41 ` Rob Mueller
2010-09-21 9:04 ` Mel Gorman
2010-09-21 9:04 ` Mel Gorman
2010-09-21 14:14 ` Christoph Lameter
2010-09-21 14:14 ` Christoph Lameter
2010-09-22 3:44 ` Rob Mueller [this message]
2010-09-22 3:44 ` Rob Mueller
2010-09-27 2:01 ` KOSAKI Motohiro
2010-09-27 2:01 ` KOSAKI Motohiro
2010-09-27 13:53 ` Christoph Lameter
2010-09-27 13:53 ` Christoph Lameter
2010-09-27 23:17 ` Robert Mueller
2010-09-27 23:17 ` Robert Mueller
2010-09-28 12:35 ` Christoph Lameter
2010-09-28 12:35 ` Christoph Lameter
2010-09-28 12:42 ` Bron Gondwana
2010-09-28 12:42 ` Bron Gondwana
2010-09-28 12:49 ` Christoph Lameter
2010-09-28 12:49 ` Christoph Lameter
2010-09-30 7:05 ` Andi Kleen
2010-09-30 7:05 ` Andi Kleen
2010-10-04 12:45 ` KOSAKI Motohiro
2010-10-04 12:45 ` KOSAKI Motohiro
2010-10-04 13:07 ` Christoph Lameter
2010-10-04 13:07 ` Christoph Lameter
2010-10-05 5:32 ` KOSAKI Motohiro
2010-10-05 5:32 ` KOSAKI Motohiro
2010-10-04 19:43 ` David Rientjes
2010-10-04 19:43 ` David Rientjes
2010-09-21 1:05 ` Default zone_reclaim_mode = 1 on NUMA kernel is bad for file/email/web servers KAMEZAWA Hiroyuki
2010-09-21 1:05 ` KAMEZAWA Hiroyuki
2010-09-27 2:04 ` KOSAKI Motohiro
2010-09-27 2:04 ` KOSAKI Motohiro
2010-09-27 2:06 ` KAMEZAWA Hiroyuki
2010-09-27 2:06 ` KAMEZAWA Hiroyuki
2010-09-23 11:44 ` Balbir Singh
2010-09-23 11:44 ` Balbir Singh
2010-09-30 8:38 ` Bron Gondwana
2010-09-30 8:38 ` Bron Gondwana
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