search for: 1mb

Displaying 20 results from an estimated 767 matches for "1mb".

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2016 Jul 28
2
[PATCH v2 repost 4/7] virtio-balloon: speed up inflate/deflate process
...;bmap_len = ALIGN(vb->pfn_limit, BITS_PER_LONG) / > > > + BITS_PER_BYTE + 2 * sizeof(unsigned long); > > > + hdr_len = sizeof(struct balloon_bmap_hdr); > > > + vb->bmap_hdr = kzalloc(hdr_len + vb->bmap_len, GFP_KERNEL); > > > > This ends up doing a 1MB kmalloc() right? That seems a _bit_ big. How big > > was the pfn buffer before? > > Yes, it is if the max pfn is more than 32GB. > The size of the pfn buffer use before is 256*4 = 1024 Bytes, it's too small, > and it's the main reason for bad performance. > Use the...
2016 Jul 28
2
[PATCH v2 repost 4/7] virtio-balloon: speed up inflate/deflate process
...;bmap_len = ALIGN(vb->pfn_limit, BITS_PER_LONG) / > > > + BITS_PER_BYTE + 2 * sizeof(unsigned long); > > > + hdr_len = sizeof(struct balloon_bmap_hdr); > > > + vb->bmap_hdr = kzalloc(hdr_len + vb->bmap_len, GFP_KERNEL); > > > > This ends up doing a 1MB kmalloc() right? That seems a _bit_ big. How big > > was the pfn buffer before? > > Yes, it is if the max pfn is more than 32GB. > The size of the pfn buffer use before is 256*4 = 1024 Bytes, it's too small, > and it's the main reason for bad performance. > Use the...
2012 Jan 21
2
[Ques]:xen_ident_map_ISA ant it's mfns...
Hi, I am bit confused about the do_update_va_mapping call that dom0 makes in xen_ident_map_ISA() to map ffff8800000a0000 to mfn a0. The mfn belongs to DOMID_IO. Before the mfn is mapped, the l1 entry is not empty: 0000000139d08500: 00100001380a0027 After the mapping: 0000000139d08500: 00100000000a0467 as expected. However, the mfn 1380a0 still seems to belong to dom0. Shouldn''t
2005 Dec 18
2
Could someone host my 1mb rails app??
Hi Everyone, Would someone be able to do a huge favor for me and host a very small 1mb rails app for me?? I can''t get my hosting up and running yet and I really need it up and running by today for my professor to check it off. I only need it up for about two weeks. You will get a lot of karma points for it :) Thanks in advance!! Jordan -- Posted via http://www.ruby-...
2004 Feb 19
1
piece wise application of functions
Dear all, After struggling for some time with *apply() and eva() without success, I decided to ask for help. I have 3 lists labeled with, each contains 3 different interpolation functions with identical names: > names(missgp0) [1] "spl.1mb" "spl.2mb" "spl.5mb" > > names(missgp1) [1] "spl.1mb" "spl.2mb" "spl.5mb" > > names(missgp2) [1] "spl.1mb" "spl.2mb" "spl.5mb" > ( In case it matters the functions accept and return one argument:...
2010 Jul 28
6
Read ahead / prefetching
Hi, I am trying to educate myself on prefetching/readahead algorithm for Lustre''s read. For a starter I only have two simple questions. 1 - Does Lustre detect linear or random I/O pattern or it always triggers readahead? 2 - If readahead is triggered, how many pages are read in addition to what is necessary? Thanks, Arifa.
2016 Jul 28
3
[virtio-dev] Re: [PATCH v2 repost 4/7] virtio-balloon: speed up inflate/deflate process
On Thu, Jul 28, 2016 at 06:36:18AM +0000, Li, Liang Z wrote: > > > > This ends up doing a 1MB kmalloc() right? That seems a _bit_ big. > > > > How big was the pfn buffer before? > > > > > > Yes, it is if the max pfn is more than 32GB. > > > The size of the pfn buffer use before is 256*4 = 1024 Bytes, it's too > > > small, and it's the...
2016 Jul 28
3
[virtio-dev] Re: [PATCH v2 repost 4/7] virtio-balloon: speed up inflate/deflate process
On Thu, Jul 28, 2016 at 06:36:18AM +0000, Li, Liang Z wrote: > > > > This ends up doing a 1MB kmalloc() right? That seems a _bit_ big. > > > > How big was the pfn buffer before? > > > > > > Yes, it is if the max pfn is more than 32GB. > > > The size of the pfn buffer use before is 256*4 = 1024 Bytes, it's too > > > small, and it's the...
2006 Dec 18
1
Extract ElTorio No Emulation image and boot from PXE ?
...rio No Emulation image and boot from PXE ? Is this possible, can PXELINUX + MEMDISC intercept the BIOS calls and pretend to the 3rd party No Emulation image to be loading the data from a CD (but instead copy from memory). The driver would be a Real Mode driver and use some part of memory above 1Mb to store the data. I would expect this to be risky, especially if the No Emulation image writes over the same (above 1Mb) location. However maybe it would be possible to run the BIOS driver it in a debug/checking mode which checksumed its working area and the image and checked it before each...
2008 Jun 11
1
software raid performance
Are there known performance issues with using glusterfs on software raid? I've been playing with a variety of configs (AFR, AFR with Unify) on a two server setup. Everything seems to work well, but performance (creating files, reading files, appending to files) is very slow. Using the same configs on two non-software raid machines shows significant performance increases. Before I go a
2014 Apr 29
2
Degraded performance when using GRE over tinc
Hi, In a setup where OpenVSwitch is used with GRE tunels on top of an interface provided by tinc, I'm experiencing significant performance degradation problems (from 100Mb/s down to 1Mb/s in the worst case) and I'm not sure how to fix this. The manifestation of the problem is, from the user point of view, iperf reports ~100Mb/s and rsync reports ~1Mb/s: $ iperf -c 91.224.149.132 ------------------------------------------------------------ Client connecting to 91.224.149.132,...
2016 Jul 27
4
[PATCH v2 repost 4/7] virtio-balloon: speed up inflate/deflate process
...in(vb->pfn_limit, get_max_pfn()); > + vb->bmap_len = ALIGN(vb->pfn_limit, BITS_PER_LONG) / > + BITS_PER_BYTE + 2 * sizeof(unsigned long); > + hdr_len = sizeof(struct balloon_bmap_hdr); > + vb->bmap_hdr = kzalloc(hdr_len + vb->bmap_len, GFP_KERNEL); This ends up doing a 1MB kmalloc() right? That seems a _bit_ big. How big was the pfn buffer before?
2016 Jul 27
4
[PATCH v2 repost 4/7] virtio-balloon: speed up inflate/deflate process
...in(vb->pfn_limit, get_max_pfn()); > + vb->bmap_len = ALIGN(vb->pfn_limit, BITS_PER_LONG) / > + BITS_PER_BYTE + 2 * sizeof(unsigned long); > + hdr_len = sizeof(struct balloon_bmap_hdr); > + vb->bmap_hdr = kzalloc(hdr_len + vb->bmap_len, GFP_KERNEL); This ends up doing a 1MB kmalloc() right? That seems a _bit_ big. How big was the pfn buffer before?
2005 Jan 31
3
load balancing between two default gateways
Hi list gurus, long story short we have firewall machine which is the default gateway for our clients and firewall send traffic out to Internet via cisco router. On cisco we have two serial interfaces 1Mb and 2Mb. On firewall #route add default gw xxx.xxx.xx.xxx (for 2mb) #route add default gw xxx.xxx.xx.xxx (for 1mb) and the same rule for Imb link route packets via these two links. However I don''t know what kernel do when sending traffic via these two "default routes" however im...
2007 Jan 31
5
Website down - Mongrel Log file issue...
I am new to Mongrel. We have a website that was created by someone using Ruby. The problem we are having is that the mongrel log file is shutting the site down when the log file gets to 1mb. Is there a way to configure the log file to cycle at a given size? What are my options to keep the site running? Thanks for your help!! Roy -------------- next part -------------- An HTML attachment was scrubbed... URL: http://rubyforge.org/pipermail/mongrel-users/attachments/20070131/7927...
2012 Oct 29
13
POLL: v2.2 to allow one mail over quota?
Currently if user is 1MB under quota and someone tries to deliver mail that is over 1MB, Dovecot rejects the mail. But smaller mails aren't rejected probably for days. So user might not even realize that they didn't receive one of the mails. Also having a user "almost over quota" is a rather strange state...
2003 Aug 10
7
pxelinux - loading vmlinuz and initrd.gz
Greetings, Hopefully a quick question.. I have been experimenting with pxelinux and have noticed the following, when using initrd.gz - vmlinuz needs to exist 'tftpboot' directory, else I get an error from pxelinux. eg. kernel/vmlinuz - vmlinux also needs to exist in initrd.gz (in the same relative path eg. kernel/vmlinuz) else Linux is not booted. [I haven't confirmed
2016 Jul 28
0
[virtio-dev] Re: [PATCH v2 repost 4/7] virtio-balloon: speed up inflate/deflate process
> > > This ends up doing a 1MB kmalloc() right? That seems a _bit_ big. > > > How big was the pfn buffer before? > > > > Yes, it is if the max pfn is more than 32GB. > > The size of the pfn buffer use before is 256*4 = 1024 Bytes, it's too > > small, and it's the main reason for bad perf...
2009 Mar 13
2
1MB/s gigabit transfers on dell poweredge
Hi, I have installed samba on a dell poweredge server. It uses integrated NetXtreme II BCM5708 Gigabit Ethernet card. My issue is that i am getting extremely slow speeds (about 1.2MB/s) on the gigabit network from linux as well as windows clients using when reading from the samba share. On the same setup (same server, client, network) using scp,rsync,nfs gives me anything between 35-50 MB/s. So
2017 Nov 15
10
Re: [Qemu-devel] [qemu-img] support for XVA
...40 1970-01-01 01:00 Ref:175/00000010.checksum You can ignore the ova.xml and just use the "Ref:175" directory. Inside the XVA you'll fine one "Ref" directory for each virtual disk (ref number is different for each disk) Inside each Ref directory, you'll get tons of 1MB file, corrisponding to the RAW image. You have to merge these files in a single raw file with just an exception: numbers are not sequential. as you can see above, we have: 00000000, 00000001, 00000003 The 00000002 is missing, because it's totally blank. XenServer doesn't export any empty b...