search for: snappy

I scripted the creation of snapshots and it works fine. Now I'd like to run the script as non-root. virsh snapshot-create-as --domain hq-live-v01 \      --name snappy \      --diskspec vda,file=/var/lib/libvirt/images/hq-live-v01.snappy,snapshot=external \      --diskspec vdb,file=/var/lib/libvirt/images/hq-live-storage.snappy,snapshot=external \      --disk-only --quiesce --atomic This fragment creates the snapshots, but get created with mode 0600: -rw------- ...

The first four bytes is the length of all data chunks, and the first four bytes of each chunk is the length of compressed chunk data, even when there''s only one chunk, which is the case for inline extents. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> --- fs/btrfs/snappy.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/fs/btrfs/snappy.c b/fs/btrfs/snappy.c index d6bd607..35b877e 100644 --- a/fs/btrfs/snappy.c +++ b/fs/btrfs/snappy.c @@ -392,12 +392,16 @@ static int btrfs_snappy_decompress(struct list_head *ws, unsigned char *data_in,...

...Mar 20, 2019 at 15:48:43 -0500, Eric Blake wrote: > On 3/20/19 1:50 PM, Mircea Husz wrote: > > I scripted the creation of snapshots and it works fine. Now I'd like to run the script as non-root. > > > > virsh snapshot-create-as --domain hq-live-v01 \ > >      --name snappy \ > >      --diskspec vda,file=/var/lib/libvirt/images/hq-live-v01.snappy,snapshot=external \ > >      --diskspec vdb,file=/var/lib/libvirt/images/hq-live-storage.snappy,snapshot=external \ > >      --disk-only --quiesce --atomic > > > > This fragment creates the snap...

On 3/20/19 1:50 PM, Mircea Husz wrote: > I scripted the creation of snapshots and it works fine. Now I'd like to run the script as non-root. > > virsh snapshot-create-as --domain hq-live-v01 \ >      --name snappy \ >      --diskspec vda,file=/var/lib/libvirt/images/hq-live-v01.snappy,snapshot=external \ >      --diskspec vdb,file=/var/lib/libvirt/images/hq-live-storage.snappy,snapshot=external \ >      --disk-only --quiesce --atomic > > This fragment creates the snapshots, but get created wi...

Thomas suggested posting these here so they don''t get lost. Making Scriptaculous Snappy: *) Drag/Drop - make release cost proportional to remaining distance For drag/drop - change the ''release'' animation time to be proportional to the remaining distance the dropped item has to travel. If a user drags the item almost all the way to the final location, the release t...

...O2, corei7-avx: 1.2% larger Os, x86-64: 0.1% larger Os, corei7-avx: < 0.1% larger This is incredibly impressive IMO. =] The performance numbers are also pretty good. There are a couple of minor regressions, only one significant one. That one happens to be open source: https://code.google.com/p/snappy/source/browse/trunk/snappy.cc this slows down -- the vectorizer vectorizes a cold loop, which then gets inlined and blocks subsequent inlining. (Many thanks to Ben Kramer for pointing out the cause so quickly for me.) But there are a lot of potential solutions to this problem: 1) vectorize after i...

Hi, so here it is, LZ4 compression method inside btrfs. The patchset is based on top of current Chris'' for-linus + Andi''s snappy implementation + the fixes from Li Zefan. Passes xfstests and stresstests. I haven''t measured performance on wide range of hardware or workloads, rather wanted to publish the patches before I get distracted again. I''d like to ask anyone willing and able to test this to share you...

...wanted to start a discussion about the following issue since I am not sure about what to do about it: > > The loop-vectorizer has the potential to make code a quite a bit bigger (esp. in cases where we don’t know the loop count or whether pointers alias). > Chandler has observed this in snappy where we have a simple memory copying loop (that may overlap). > > We vectorize this loop and then this loop gets inlined into a function and prevents this function from getting inlined again. Causing a significant(?) degradation. > > https://code.google.com/p/snappy/source/browse/tru...

Hello all, I''m attempting to test/tune a mongrel cluster according to the tuning instructions on the mongrel site (using httperf). Anecdotally, the site itself ''feels'' snappy, but testing it with httperf reveals what appears to be terrible throughput. I''m kind of at a loss to describe the results, and was hoping someone could verify that I''m testing incorrectly (enormously likely), or truly have a problem that needs to be ferreted out. When testing a p...

Hi, I wanted to start a discussion about the following issue since I am not sure about what to do about it: The loop-vectorizer has the potential to make code a quite a bit bigger (esp. in cases where we don’t know the loop count or whether pointers alias). Chandler has observed this in snappy where we have a simple memory copying loop (that may overlap). We vectorize this loop and then this loop gets inlined into a function and prevents this function from getting inlined again. Causing a significant(?) degradation. https://code.google.com/p/snappy/source/browse/trunk/snappy.cc#99 We...

Sorry for the delays here. I am running our benchmark suite and will have data in a day or so. On Jun 13, 2013 9:40 PM, "Nadav Rotem" <nrotem at apple.com> wrote: > Hi, > > Last week I wrote llvm-dev and presented data that shows how enabling the > vectorizer on -Os can improve the performance of many workloads and that it > has negligible effects on code size. I

Hi Everyone, In Xen, is a DomU able to access data in RAM which a previous DomU has stored in the past, but didn''t "zero" it? I understand that this is a problem with physical disks (using phy:/), just wondering if the same stands with RAM Thanks _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com

Hi Everyone, In Xen, is a DomU able to access data in RAM which a previous DomU has stored in the past, but didn''t "zero" it? I understand that this is a problem with physical disks (using phy:/), just wondering if the same stands with RAM Thanks _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com

...2) The Vista guys seem to think that being able to pre-empt GPU processing is important. Does XGL support this? I am guessing maybe not ... it doesn't seem to matter though, even with the atlantis screensaver running as the backdrop and with all the effects the screen is always snappy and responsive. http://blogs.msdn.com/greg_schechter/archive/2006/04/02/566767.aspx That blog also contains a discussion of the glass blur effect they have in Vista. It sounds quite hard to do properly but I bet it could be fudged and look nearly as good (eg at the edges). So far I don't se...

...a new login session. XN - supports a remote login with a full kde desktop environement running in a single xwindow. Each has its advantages for specific needs. When I mentioned bad performance of XN in an earlier post, I was refering to test on a xen domain. Over a regular network, it is quite snappy, and over the internet, it is simple amazing. It does not seem to be happy on a domain system, however. I''ve got some more things to try. But the client is gagging and stops responding after a connection has been established and a session started. The top command shows several new item...

...1 (upgraded from 5.0) with Samba 3.0.25b-1.el5_1.4 has been in place for about a year and a half. We had no issues till about 2 months ago. This may have coincided with the upgrade of CentOS 5.0 to 5.1 (which would have brought a new Samba version with it). Anyway, the server will be fine and snappy for a week or so, then out of the blue, nobody can connect. Top shows a few smbd processes maxing out the cpu and the load (which is usually < 1.0) gradually climbs up to 10, 20, and onward. If I stop smb and winbind with the init scripts, then the load goes through the roof. I've waited...

Hi, Last week I wrote llvm-dev and presented data that shows how enabling the vectorizer on -Os can improve the performance of many workloads and that it has negligible effects on code size. I also added a command line switch to make it easier for people to benchmark the vectorizer using -Os directly from clang without changing LLVM. Has anyone done any benchmarks on -Os + vectorization ?

...a (say) matrix of indices to the 2^10 subsets of N items -- perhaps in the form of 2^10 rows each of which is 10 entries each either TRUE or FALSE. Or 1 or 0. Or ... I can of course write my own, using good old looping technology or similar, but it would be good to find one which did it quick and snappy, at the compiled level. A Site Search in Function on "all subsets" didn't seem to yield anything of the kind, which surprised me. Maybe I overlooked something ... (This is prompted by the recent "OT" discussion on "HT vs. HH", to which I want to respond later)....

hi guys, Just wondering if anyone has done any performance testing between kvm and xen on CentOS-5 ( using centos as host and vm in every case ) ? Regards, -- Karanbir Singh London, UK | http://www.karan.org/ | twitter.com/kbsingh ICQ: 2522219 | Yahoo IM: z00dax | Gtalk: z00dax GnuPG Key : http://www.karan.org/publickey.asc

...t a discussion about the following issue since I am > not sure about what to do about it: > > The loop-vectorizer has the potential to make code a quite a bit > bigger (esp. in cases where we don’t know the loop count or whether > pointers alias). > Chandler has observed this in snappy where we have a simple memory > copying loop (that may overlap). > > We vectorize this loop and then this loop gets inlined into a > function and prevents this function from getting inlined again. > Causing a significant(?) degradation. > > https://code.google.com/p/snappy/so...