 trparkyApple... YUMPremium,MVM
join:2000-05-24
Cleveland, OH
kudos:2
 ·Time Warner Cable
| reply to dave
Re: [WIN7] Recommended SSD System Tweaks? said by dave:10 million interrupts per second seems like a hell of a lot. If it takes of the order of a few hundred instructions to service an interrupt, that's more than one CPU core's worth. Yes, that's across all eight "cores" of the Core i7 CPU.
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Tom
Boycott AT&T uVerse! | Tom's Android Blog | AOKP (The Android Open Kang Project) |
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davePremium,MVM
join:2000-05-04
not in ohio
kudos:8 | But my point is that consuming one whole core just for interrupt handling is not normal.
Unless you're servicing a lot of non-DMA devices. (Are USB devices DMA? Dunno) |
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trparkyApple... YUMPremium,MVM
join:2000-05-24
Cleveland, OH
kudos:2 Reviews:
·Time Warner Cable
| I only have a Logitech Keyboard & Mouse receiver (one USB device services them both) and a Logitech web cam. Only two USB devices are plugged into the machine at any one time. It's rare, but sometimes I connect my Android phone to the computer but usually only for short periods of time and I disconnect it when I'm finished.
LatencyMon says that some nVidia driver along with the NDIS, TCP/IP, and USBPORT driver are also part of the problem but it changes depending upon the state of the machine. As you can guess, tracking down which driver is causing this issue has been rather difficult.
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Tom
Boycott AT&T uVerse! | Tom's Android Blog | AOKP (The Android Open Kang Project) |
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trparkyApple... YUMPremium,MVM
join:2000-05-24
Cleveland, OH
kudos:2 | I can't help but to think that somewhere in this system of mine, hardware is failing and that this is a sign of the beginning of the end for it. |
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trparkyApple... YUMPremium,MVM
join:2000-05-24
Cleveland, OH
kudos:2 Reviews:
·Time Warner Cable
| Damn it, I solved the problem. Too bad I had to use the "sledge hammer" method to do so. I reformatted my machine and reinstalled from scratch. Guess what? No issues. No DPC Latency spikes according to DPC Latency Checker v1.3.
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Tom
Boycott AT&T uVerse! | Tom's Android Blog | AOKP (The Android Open Kang Project) |
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davePremium,MVM
join:2000-05-04
not in ohio
kudos:8 | Just for comparison, what's the interrupt rate now? |
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trparkyApple... YUMPremium,MVM
join:2000-05-24
Cleveland, OH
kudos:2 Reviews:
·Time Warner Cable
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Interrupts |
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 MrWhsprsPremium
join:2000-04-22
Skokie, IL
·RCN CABLE
| reply to Vchat20
said by Vchat20:-IF- you use hibernate, move it.
Just a quick note that the hibernate file can't be moved. It's my understanding that the hibernate file will always be (and can only be) in the root of the system partition, where ntldr is located.
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Mike  |
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trparkyApple... YUMPremium,MVM
join:2000-05-24
Cleveland, OH
kudos:2 Reviews:
·Time Warner Cable
| 
High Interrupts |
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 DarkLogixTexan and ProudPremium
join:2008-10-23
Baytown, TX
kudos:3 | reply to BronsCon
said by BronsCon:said by trparky:So do I even need a page file for a system that has 8 or 12 GBs of RAM?
Depends what you're doing with it. I run 16GB with no pagefile, but I'm gonna have to turn that puppy back on when I start running my VMs again. If you're just surfing the web and checking your email, you're probably good without a pagefile even at 4GB. Turn off hibernation, set the pagefile initial size to 0, max size to whatever (usually equal to the amount of RAM you have is a good policy, double your RAM if you have 4GB or less) and Windows won't page out unless it absolutely needs to. Disabling the pagefile altogether means a crash if you fill your RAM, setting it to a 0 initial size means it won't be used unless your RAM is literally full; giving it a nonzero initial size means Windows will page out enough data to fill that initial size as soon as there's enough disk idle time for it to do so without impacting performance. It does this and marks the paged out portion of RAM as disposable, so it knows it can just free that RAM without having to page it our first (since it's already written to disk), but if you never actually fill your RAM, you're using erase-write cycles on your SSD needlessly. Actually ideal for the pagefile is set min and max to the same size so it doesn't re-size it |
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DarkLogixTexan and ProudPremium
join:2008-10-23
Baytown, TX
kudos:3 | reply to dave
said by dave:said by DKS:Let Windows 7 do its thing and the rest of us should be fine. There's no alignment issue with Windows 7 - it knows how to do the alignment. Previous versions of Windows did not; so those are the systems on which you need to fix the alignment (if you care). That includes the update from not-Win7 to Win7 case, of course. If in doubt check the alignment, its a few command line commands and you can see if its aligned.
if its not then fix
this applies to all SSD's and all 4k block drives (often called advanced format, as the 4k block size was needed to make drives over 2TB) |
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| reply to DarkLogix
You're thinking spinning disk, where there are performance implications to fragmentation. Taking that out of the equation changes the game; the ideal pagefile is the smallest one you can get away with at any given moment. |
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DarkLogixTexan and ProudPremium
join:2008-10-23
Baytown, TX
kudos:3 | said by BronsCon:You're thinking spinning disk, where there are performance implications to fragmentation. Taking that out of the equation changes the game; the ideal pagefile is the smallest one you can get away with at any given moment.
Re-sizing is extra IO, though if you have enough ram then set a small page file, I have 24GB of ram so I set a tiny pagefile with same min/max size so its there but doesn't do anything.
If it has to change the file size that is more IO than if it just had to update the data of the file, so its still a good idea for a non-changing size. (though if you have enough memory to not need a pagefile then it's going to sit there empty and not have an effect anyway.)
and short of 2 programs I use nothing has come close to filing my ram and even those 2 haven't fully filled it. |
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davePremium,MVM
join:2000-05-04
not in ohio
kudos:8 | reply to trparky
Your screenshot shows count, not rate. A high count is not necessarily a problem. |
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trparkyApple... YUMPremium,MVM
join:2000-05-24
Cleveland, OH
kudos:2 | dave  , what do you want to see? What graphs, data tables, etc. do you want to see? |
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trparkyApple... YUMPremium,MVM
join:2000-05-24
Cleveland, OH
kudos:2 Reviews:
·Time Warner Cable
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High Interrupts v2 |
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trparkyApple... YUMPremium,MVM
join:2000-05-24
Cleveland, OH
kudos:2 Reviews:
·Time Warner Cable
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DPC Graph |
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 billaustinthey call me Mr. BillPremium,MVM
join:2001-10-13
North Las Vegas, NV
kudos:3 | reply to trparky
I was reading through the FAQ's on the Intel site yesterday while downloading the firmware update for some 40GB Intel SSDs. Poor performance is one of the times they do recommend a low-level format of the SSD. It may not fix your problem, but is possibly something to look at. |
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trparkyApple... YUMPremium,MVM
join:2000-05-24
Cleveland, OH
kudos:2 Reviews:
·Time Warner Cable
| Ok, but here's the problem. It starts out fast, boots up fast, starts up apps fast, generally it's very fast. Then, as the system is used over time the machine gradually slows down to where apps take forever to load relative to how it is when the system first boots. To fix this I'd reboot, reboot and everything gets zippy again. But, wait a couple of hours and it's slow-mo again.
I'm at my wits end here. There is no reason on God's green Earth that a machine of this caliber should be slowing down like this. There just isn't any call for it.
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Tom
Boycott AT&T uVerse! | Tom's Android Blog | AOKP (The Android Open Kang Project) |
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trparkyApple... YUMPremium,MVM
join:2000-05-24
Cleveland, OH
kudos:2 | If I had a bad SSD, a reboot wouldn't magically solve the issue. It would be slow-mo all the time, not just after awhile of being up without a reboot. |
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