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List: quanta
Subject: [Quanta] Slowness when opening large projects
From: Sasha Andric <sasha () goldnet ! ca>
Date: 2005-09-12 14:25:54
Message-ID: 200509121125.55103.sasha () goldnet ! ca
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When opening project in quanta (svn 3.5 branch) it goes through rescanning
project files and reading them and this takes a few minutes with very large
projects (thousands of file) and about 30 seconds with medium ones (hundreds
of files).
Initially small progress bar shows up in the status tray and that gets to 100%
in seconds. After that rescanning starts. During this time CPU usage is
close to 100%. With this particular project it takes a few minutes to get it
up and running. This project has thousands of files located on NFS mount.
Below is small chunk of the trace of this process. Notice how the files opened
are not in any order. The thing just jumps all over the place which does not
make it too efficient. The other question is, should it really be reading the
files. If it has to scan them, maybe it should just check that they do exists
and maybe it should do entire directory at the time rather then jumping
around.
Sasha
read(5, "\0", 1) = 1
gettimeofday({1126534256, 255136}, NULL) = 0
ioctl(3, FIONREAD, [0]) = 0
gettimeofday({1126534256, 255887}, NULL) = 0
select(18, [3 4 5 7 9 11 12 13 14 15 16 17], [], [], {0, 440}) = 0 (Timeout)
gettimeofday({1126534256, 256160}, NULL) = 0
ioctl(3, FIONREAD, [0]) = 0
gettimeofday({1126534256, 256210}, NULL) = 0
select(18, [3 4 5 7 9 11 12 13 14 15 16 17], [], [], {0, 117}) = 0 (Timeout)
gettimeofday({1126534256, 257298}, NULL) = 0
getcwd("/home/ethx", 4096) = 11
lstat64("/home", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/home/ethx", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/home/ethx/tnt_home", {st_mode=S_IFDIR|0755, st_size=8192, ...}) = 0
lstat64("/home/ethx/tnt_home/public_html", {st_mode=S_IFDIR|0755,
st_size=4096, ...}) = 0
lstat64("/home/ethx/tnt_home/public_html/dotproject", {st_mode=S_IFDIR|0755,
st_size=4096, ...}) = 0
lstat64("/home/ethx/tnt_home/public_html/dotproject/work", {st_mode=S_IFDIR|
0755, st_size=4096, ...}) = 0
lstat64("/home/ethx/tnt_home/public_html/dotproject/work/sac",
{st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/home/ethx/tnt_home/public_html/dotproject/work/sac/xinha",
{st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/home/ethx/tnt_home/public_html/dotproject/work/sac/xinha/plugins",
{st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64
("/home/ethx/tnt_home/public_html/dotproject/work/sac/xinha/plugins/ImageManager",
{st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64
("/home/ethx/tnt_home/public_html/dotproject/work/sac/xinha/plugins/ImageManager/img", \
{st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64
("/home/ethx/tnt_home/public_html/dotproject/work/sac/xinha/plugins/ImageManager/img/measure.gif", \
{st_mode=S_IFREG|0644, st_size=184, ...}) = 0
chdir("/home/ethx") = 0
stat64
("/home/ethx/tnt_home/public_html/dotproject/work/sac/xinha/plugins/ImageManager/img/measure.gif", \
{st_mode=S_IFREG|0644, st_size=184, ...}) = 0
stat64
("/home/ethx/tnt_home/public_html/dotproject/work/sac/xinha/plugins/ImageManager/img/measure.gif", \
{st_mode=S_IFREG|0644, st_size=184, ...}) = 0
open("/home/ethx/tnt_home/public_html/dotproject/work/sac/xinha/plugins/ImageManager/img/measure.gif", \
O_RDONLY|O_LARGEFILE) = 18
fstat64(18, {st_mode=S_IFREG|0644, st_size=184, ...}) = 0
fstat64(18, {st_mode=S_IFREG|0644, st_size=184, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb5c0a000
read(18, "GIF89a\24\0\24\0\221\0\0ff\231\377\377\377\331\331\331"..., 4096) =
184
close(18) = 0
munmap(0xb5c0a000, 4096) = 0
gettimeofday({1126534256, 273628}, NULL) = 0
gettimeofday({1126534256, 273806}, NULL) = 0
ioctl(3, FIONREAD, [0]) = 0
gettimeofday({1126534256, 273865}, NULL) = 0
select(18, [3 4 5 7 9 11 12 13 14 15 16 17], [], [], {0, 1763}) = 0 (Timeout)
gettimeofday({1126534256, 277391}, NULL) = 0
getcwd("/home/ethx", 4096) = 11
lstat64("/home", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/home/ethx", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/home/ethx/tnt_home", {st_mode=S_IFDIR|0755, st_size=8192, ...}) = 0
lstat64("/home/ethx/tnt_home/public_html", {st_mode=S_IFDIR|0755,
st_size=4096, ...}) = 0
lstat64("/home/ethx/tnt_home/public_html/dotproject", {st_mode=S_IFDIR|0755,
st_size=4096, ...}) = 0
lstat64("/home/ethx/tnt_home/public_html/dotproject/work", {st_mode=S_IFDIR|
0755, st_size=4096, ...}) = 0
lstat64("/home/ethx/tnt_home/public_html/dotproject/work/sac",
{st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/home/ethx/tnt_home/public_html/dotproject/work/sac/admin",
{st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64
("/home/ethx/tnt_home/public_html/dotproject/work/sac/admin/Services_PayPal",
{st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64
("/home/ethx/tnt_home/public_html/dotproject/work/sac/admin/Services_PayPal/docs",
{st_mode=S_IFDIR|0744, st_size=4096, ...}) = 0
lstat64
("/home/ethx/tnt_home/public_html/dotproject/work/sac/admin/Services_PayPal/docs/apidoc", \
{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
lstat64
("/home/ethx/tnt_home/public_html/dotproject/work/sac/admin/Services_PayPal/docs/apidoc/Services_PayPal", \
{st_mode=S_IFDIR|0700, st_size=12288, ...}) = 0
lstat64
("/home/ethx/tnt_home/public_html/dotproject/work/sac/admin/Services_PayPal/docs/apidoc/Services_PayPal/TransactionSearchRequestType.html", \
{st_mode=S_IFREG|0700, st_size=39174, ...}) = 0
chdir("/home/ethx") = 0
stat64
("/home/ethx/tnt_home/public_html/dotproject/work/sac/admin/Services_PayPal/docs/apidoc/Services_PayPal/TransactionSearchRequestType.html", \
{st_mode=S_IFREG|0700, st_size=39174, ...}) = 0
open("/home/ethx/tnt_home/public_html/dotproject/work/sac/admin/Services_PayPal/docs/apidoc/Services_PayPal/TransactionSearchRequestType.html", \
O_RDONLY|O_LARGEFILE) = 18
fstat64(18, {st_mode=S_IFREG|0700, st_size=39174, ...}) = 0
fstat64(18, {st_mode=S_IFREG|0700, st_size=39174, ...}) = 0
fstat64(18, {st_mode=S_IFREG|0700, st_size=39174, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb5c0a000
read(18, "<?xml version=\"1.0\" encoding=\"is"..., 4096) = 4096
fstat64(18, {st_mode=S_IFREG|0700, st_size=39174, ...}) = 0
fstat64(18, {st_mode=S_IFREG|0700, st_size=39174, ...}) = 0
fstat64(18, {st_mode=S_IFREG|0700, st_size=39174, ...}) = 0
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