search for: slowdowns

Displaying 20 results from an estimated 1068 matches for "slowdowns".

Did you mean: slowdown
2011 Nov 08
0
[LLVMdev] [llvm-commits] [PATCH] BasicBlock Autovectorization Pass
...mllvm -vectorize'? > The largest three performance speedups are: > SingleSource/Benchmarks/BenchmarkGame/puzzle - 59.2% speedup > SingleSource/UnitTests/Vector/multiplies - 57.7% speedup > SingleSource/Benchmarks/Misc/flops-7 - 50.75% speedup > > The largest three performance slowdowns are: > MultiSource/Benchmarks/MiBench/security-rijndael/security-rijndael - > 114% slowdown > MultiSource/Benchmarks/MiBench/network-patricia/network-patricia - 66.6% > slowdown > SingleSource/Benchmarks/Misc/flops-8 - 64.2% slowdown > Interesting. Do you understand what causes th...
2011 Nov 08
1
[LLVMdev] [llvm-commits] [PATCH] BasicBlock Autovectorization Pass
...ctorization, this patch will probably work for you. The largest three performance speedups are: SingleSource/Benchmarks/BenchmarkGame/puzzle - 59.2% speedup SingleSource/UnitTests/Vector/multiplies - 57.7% speedup SingleSource/Benchmarks/Misc/flops-7 - 50.75% speedup The largest three performance slowdowns are: MultiSource/Benchmarks/MiBench/security-rijndael/security-rijndael - 114% slowdown MultiSource/Benchmarks/MiBench/network-patricia/network-patricia - 66.6% slowdown SingleSource/Benchmarks/Misc/flops-8 - 64.2% slowdown (from these, I've excluded tests that took less that 0.1 seconds to ru...
2012 Jul 07
2
[LLVMdev] Exception handling slowdown?
...blem? >> >> I don't see any relevant LLVM changes, so I guess clang C++ compilation slowed >> down due to some clang changes. I'm not going to investigate this. >> > Crumbs. > > John, Do you know of anything that went into clang that could account for EH slowdowns? Is this Linux? Is it possibly just Objective-C tests? There have been several patches about ObjC runtimes recently that affected exceptions. John.
2011 Nov 08
3
[LLVMdev] [llvm-commits] [PATCH] BasicBlock Autovectorization Pass
...gt; The largest three performance speedups are: > > SingleSource/Benchmarks/BenchmarkGame/puzzle - 59.2% speedup > > SingleSource/UnitTests/Vector/multiplies - 57.7% speedup > > SingleSource/Benchmarks/Misc/flops-7 - 50.75% speedup > > > > The largest three performance slowdowns are: > > MultiSource/Benchmarks/MiBench/security-rijndael/security-rijndael - > > 114% slowdown > > MultiSource/Benchmarks/MiBench/network-patricia/network-patricia - 66.6% > > slowdown > > SingleSource/Benchmarks/Misc/flops-8 - 64.2% slowdown > > > Interestin...
2012 Jul 07
0
[LLVMdev] Exception handling slowdown?
...t;> I don't see any relevant LLVM changes, so I guess clang C++ compilation slowed >>> down due to some clang changes. I'm not going to investigate this. >>> >> Crumbs. >> >> John, Do you know of anything that went into clang that could account for EH slowdowns? > > Is this Linux? Is it possibly just Objective-C tests? There have been several patches about ObjC runtimes recently that affected exceptions. yes, it is linux. While the worst slowdowns were in Objective-C tests, there were lots of non-objc slowdowns too (see list in quoted message in...
2012 Jul 07
1
[LLVMdev] Exception handling slowdown?
...any relevant LLVM changes, so I guess clang C++ compilation slowed >>>> down due to some clang changes. I'm not going to investigate this. >>>> >>> Crumbs. >>> >>> John, Do you know of anything that went into clang that could account for EH slowdowns? >> >> Is this Linux? Is it possibly just Objective-C tests? There have been several patches about ObjC runtimes recently that affected exceptions. > > yes, it is linux. While the worst slowdowns were in Objective-C tests, there > were lots of non-objc slowdowns too (see l...
2004 Apr 29
1
openMosix vs SNOW: redhat kernel causing slowdown?
Hi there, We're currently attempting to explain a slowdown of an LVQ-type parallel analysis we're working on. We are benchmarking our analysis running over openMosix against the same running via SNOW for R. Both perform similarly on small datasets, but on large datasets SNOW drastically outperforms openMosix. However, these results are achieve running SNOW on the default RedHat
2017 May 18
3
system slowdown
I have a CentOS 6 system that has suddenly starting significantly slowing down. It runs a django app with an Apache server and MySQL server. There is plenty of disk space and no process seems to be hogging the memory or CPU. But operations that used to take 5 minutes are now taking hours and hours. Coinciding with this slow down I see these messages in /var/log/messages (this is hand typed, as I
2011 Nov 08
0
[LLVMdev] [llvm-commits] [PATCH] BasicBlock Autovectorization Pass
...three performance speedups are: >>> SingleSource/Benchmarks/BenchmarkGame/puzzle - 59.2% speedup >>> SingleSource/UnitTests/Vector/multiplies - 57.7% speedup >>> SingleSource/Benchmarks/Misc/flops-7 - 50.75% speedup >>> >>> The largest three performance slowdowns are: >>> MultiSource/Benchmarks/MiBench/security-rijndael/security-rijndael - >>> 114% slowdown >>> MultiSource/Benchmarks/MiBench/network-patricia/network-patricia - 66.6% >>> slowdown >>> SingleSource/Benchmarks/Misc/flops-8 - 64.2% slowdown >>&g...
1998 Jul 26
3
Slowdown when copying large files (PR#8617)
> Further to my previous post, I have made an interesting discovery. This > particular slowdown only occurs from clients that are running > Windows 98. The Windows98 explorer (and possibly other programs) incorrectly set the "sync" bit in write requests to network shares. This causes an enormous slowdown as Samba (quite correctly) does a fsync() on the file after each write.
2013 Aug 12
1
Silence causing encoder slowdown on 32 bit architecture
...and I was wondering if this is a known issue. First, note that this problem occurs when the Opus encoder is created with OPUS_APPLICATION_VOIP, there is no issue if the encoder is created with OPUS_APPLICATION_AUDIO. If compiled for a 32 bit architecture (i386), the encoder experiences significant slowdowns when regular audio is followed by digital silence. The size of the encoded frames is also far too big: 128 byes for 20ms of pure silence. The problem does not occur if the library was compiled for a 64 bit architecture (amd64). For example, if a single audio frame (20 ms, 48kHz, mono, 16 bit) norma...
2013 Aug 12
0
Silence causing encoder slowdown on 32 bit architecture
...lem occurs when the Opus encoder is created > > with OPUS_APPLICATION_VOIP, there is no issue if the encoder is created > > with OPUS_APPLICATION_AUDIO. > > > > > > > > If compiled for a 32 bit architecture (i386), the encoder experiences > > significant slowdowns when regular audio is followed by digital silence. > > The size of the encoded frames is also far too big: 128 byes for 20ms of > > pure silence. The problem does not occur if the library was compiled for > > a 64 bit architecture (amd64). > > > > > > > &gt...
2004 Jun 08
3
Major RAC slowdown
Hello again. Our production cluster has begun experiencing some vicious slowdowns that may (or may not) be related to the filesystems. When the problem occurs, the load average on the servers jumps up to 30 or higher. Usually one node will climb while the other drops, then they will switch places a few minutes later. At one point, we had one node's load average up over 30...
2008 Jan 21
3
[LLVMdev] RFC: GLIBCXX_DEBUG ScheduleDAG Patch
On Friday 04 January 2008 12:59, Evan Cheng wrote: > On Jan 2, 2008, at 12:44 PM, David Greene wrote: > > On Saturday 22 December 2007 02:33, Evan Cheng wrote: > >>> After some very simple testing, I see slowdowns of around 1.7%. I > >>> assume > >>> this is ok, but want to check. > >> > >> Can you clarify? Is this 1.7% slowdown of scheduling time or overall > >> codegen time? If it's the later, then it seems a bit too much. Also, > >> please t...
2001 Nov 12
5
how to counteract slowdown
Hello, as far as I understood ext3 will more or less hog a machine when writing away the journal. A customer is having a slowdown every 5 minues for about 30 seconds, the machine becomes more or less unusable. This is an NFS server serving 300 Gigs spread over 2 NFS shares. I'm wondering what would be the best course of action: a) make the journal bigger? b) make the journal smaller?
2016 Mar 08
4
llvm and clang are getting slower
On Tue, Mar 8, 2016 at 10:42 AM, Richard Smith via llvm-dev < llvm-dev at lists.llvm.org> wrote: > On Tue, Mar 8, 2016 at 8:13 AM, Rafael EspĂ­ndola > <llvm-dev at lists.llvm.org> wrote: > > I have just benchmarked building trunk llvm and clang in Debug, > > Release and LTO modes (see the attached scrip for the cmake lines). > > > > The compilers used were
2018 Mar 28
2
[RFC] Making .eh_frame more linker-friendly
I am very interested in reviving this. Did anyone get any further with these ideas? @Grimar: Did you do any profiling of the code? Were the slowdowns you were seeing fundamental (i.e. due to IO) or could a more optimal implementation reduce the slowdown? Did you do any end to end timings for compilation + link time? The same issues arise for all metadata sections: .eh_frame .debug_* .stack_sizes etc... In our proprietary linker we...
2007 Nov 13
2
Spec slowdown
Is there something currently going on on the rspec trunk that causes a massive slowdown when running rake spec and autotest (without spec_server)? I updated to the latest trunk yesterday and the time needed to run the specs of my app jumped from ~20 seconds to more than a minute. The weird thing is that if I run the rake spec tasks separately (controllers, models, views, helpers), they
2007 Nov 29
2
Severe VMware slowdown
In the last few days, I have noticed a drastic slowdown in my VMware Windows guest OS.. I recently bit the bullet and upgraded it from XP SP1 to SP2, and that seemed to work fine for quite a few days. The two major changes I made to the system recently were: 1) The most recent update from CentOS (can't remember which one, but it was within the last two weekd for 5.0). 2) Adding another VM
2018 Mar 28
0
[RFC] Making .eh_frame more linker-friendly
>@Grimar: Did you do any profiling of the code? Were the slowdowns >you were seeing fundamental (i.e. due to IO) or could a more optimal >implementation reduce the slowdown? Did you do any end to end >timings for compilation + link time? No, as far I remember I did not profile this. All results I had were about linker timing for linking clang (posted...