search for: underperform

...reen or other indication. I then tried to rename the exe and other files on the disc and reburn it. It seems to have installed fine but upon loading the menu it shows a NO DISC error and the menu itself runs extremely slow. I have checked the appDB and apparently no such bug or for that matter such underperformance has been indicated with this particular game. If anyone could shed some light on this, it would be much appreciated. Thanks! I am running Mint 7 Gloria under GNOME.

On Wednesday, November 01, 2017 4:59 PM, Michael S. Tsirkin wrote: > On Sun, Oct 29, 2017 at 01:52:25PM +0100, Jens Freimann wrote: > > Ilya: - you might have more completions than descriptors available > > - partial descriptor chains are a problem for hardware because you > > might have to read a bunch of conscriptors twice - how would you do > > deal with a big

On Wednesday, November 01, 2017 4:59 PM, Michael S. Tsirkin wrote: > On Sun, Oct 29, 2017 at 01:52:25PM +0100, Jens Freimann wrote: > > Ilya: - you might have more completions than descriptors available > > - partial descriptor chains are a problem for hardware because you > > might have to read a bunch of conscriptors twice - how would you do > > deal with a big

...address as opposed to overlapping the available entries. If you are going to support skipping writing back some used descriptors then accounting would have to change slightly since driver won't be able to reset used flags then. But in the past in all tests I've written this separate ring underperforms a shared ring. > > > > > > > > >

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...to overlapping the available entries. If you are going to > support skipping writing back some used descriptors then accounting > would have to change slightly since driver won't be able to reset used > flags then. But in the past in all tests I've written this separate > ring underperforms a shared ring. > [I.L] A completion is a used entry + device specific metadata. I don't remember seeing an option to write used entries in a separate address, I'll appreciate it if you can point me to the right direction. Regarding the shared ring vs separate ring, I can't really...

...to overlapping the available entries. If you are going to > support skipping writing back some used descriptors then accounting > would have to change slightly since driver won't be able to reset used > flags then. But in the past in all tests I've written this separate > ring underperforms a shared ring. > [I.L] A completion is a used entry + device specific metadata. I don't remember seeing an option to write used entries in a separate address, I'll appreciate it if you can point me to the right direction. Regarding the shared ring vs separate ring, I can't really...

...w plan. Pretty much all U.S. regions are presenting a picture of "slow growth or lateral movement in economic activity" over the past few months. The economy keeps touching that bottom without showing any improvements. On August 7, we had Chicago Fed President Moskow citing that, "an underperforming economy may be rare, but it is nothing new. What is different today are the mixed signals we see in the marketplace. The combination of weaknesses and strengths and risks is both unusual and challenging." Symbol Close High Low Gain/Loss SPU01 1191.20 1197.50 1171....

...w plan. Pretty much all U.S. regions are presenting a picture of "slow growth or lateral movement in economic activity" over the past few months. The economy keeps touching that bottom without showing any improvements. On August 7, we had Chicago Fed President Moskow citing that, "an underperforming economy may be rare, but it is nothing new. What is different today are the mixed signals we see in the marketplace. The combination of weaknesses and strengths and risks is both unusual and challenging." Symbol Close High Low Gain/Loss SPU01 1191.20 1197.50 1171....

...vailable entries. If you are going to > > support skipping writing back some used descriptors then accounting > > would have to change slightly since driver won't be able to reset used > > flags then. But in the past in all tests I've written this separate > > ring underperforms a shared ring. > > > [I.L] A completion is a used entry + device specific metadata. > I don't remember seeing an option to write used entries in a separate address, > I'll appreciate it if you can point me to the right direction. It wasn't described in the talk. But i...

...work descriptors, WQ in short) can be > connected to a single CQ. > > So when the device completes the work on the descriptor, it writes a > Completion Queue Entry (CQE) to the CQ. > > This seems similar to the design we currently have with a separate used > ring. It seems to underperform writing into the available ring > at least on a microbenchmark. The reason seems to be that > more cache lines need to get invalidated and re-fetched. Few points on that: Each PCIe write will cause invalidation to a cache line. Writing less than a cache line is inefficient, so it is better...

...work descriptors, WQ in short) can be > connected to a single CQ. > > So when the device completes the work on the descriptor, it writes a > Completion Queue Entry (CQE) to the CQ. > > This seems similar to the design we currently have with a separate used > ring. It seems to underperform writing into the available ring > at least on a microbenchmark. The reason seems to be that > more cache lines need to get invalidated and re-fetched. Few points on that: Each PCIe write will cause invalidation to a cache line. Writing less than a cache line is inefficient, so it is better...

...Multiple Work Queues(hold the work descriptors, WQ in short) can be connected to a single CQ. > So when the device completes the work on the descriptor, it writes a Completion Queue Entry (CQE) to the CQ. This seems similar to the design we currently have with a separate used ring. It seems to underperform writing into the available ring at least on a microbenchmark. The reason seems to be that more cache lines need to get invalidated and re-fetched. > CQEs are continuous in memory so prefetching by the driver is efficient, although the device might complete work descriptors out of order. That...

> -----Original Message----- > From: virtio-dev at lists.oasis-open.org [mailto:virtio-dev at lists.oasis-open.org] > On Behalf Of Michael S. Tsirkin > Sent: Wednesday, February 08, 2017 5:20 AM > To: virtio-dev at lists.oasis-open.org > Cc: virtualization at lists.linux-foundation.org > Subject: [virtio-dev] packed ring layout proposal v2 > > This is an update from v1

Hi all, I''m putting together a OpenSolaris ZFS-based system and need help picking hardware. I''m thinking about using this 26-disk case: [FYI: 2-disk RAID1 for the OS & 4*(4+2) RAIDZ2 for SAN] http://rackmountpro.com/productpage.php?prodid=2418 Regarding the mobo, cpus, and memory - I searched goggle and the ZFS site and all I came up with so far is that, for a

Hi all, I''m putting together a OpenSolaris ZFS-based system and need help picking hardware. I''m thinking about using this 26-disk case: [FYI: 2-disk RAID1 for the OS & 4*(4+2) RAIDZ2 for SAN] http://rackmountpro.com/productpage.php?prodid=2418 Regarding the mobo, cpus, and memory - I searched goggle and the ZFS site and all I came up with so far is that, for a

This is an update from v1 version. Changes: - update event suppression mechanism - separate options for indirect and direct s/g - lots of new features --- Performance analysis of this is in my kvm forum 2016 presentation. The idea is to have a r/w descriptor in a ring structure, replacing the used and available ring, index and descriptor buffer. * Descriptor ring: Guest adds descriptors with

This is an update from v1 version. Changes: - update event suppression mechanism - separate options for indirect and direct s/g - lots of new features --- Performance analysis of this is in my kvm forum 2016 presentation. The idea is to have a r/w descriptor in a ring structure, replacing the used and available ring, index and descriptor buffer. * Descriptor ring: Guest adds descriptors with