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partyfuse: fix extremely slow dircache lookups

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the cache was a list of files instead of a dict... dude

also adds a max-num dircache limit
in addition to the expiration time
This commit is contained in:
ed 2024-10-01 17:07:28 +00:00
parent 3900e66158
commit 03f0f99469
1 changed files with 23 additions and 29 deletions
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50
bin/partyfuse.py
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@ -399,7 +399,7 @@ class Gateway(object):
rsp += buf
rsp = json.loads(rsp.decode("utf-8"))
ret = []
ret = {}
for statfun, nodes in [
[self.stat_dir, rsp["dirs"]],
[self.stat_file, rsp["files"]],
@ -409,12 +409,12 @@ class Gateway(object):
if bad_good:
fname = enwin(fname)
ret.append([fname, statfun(n["ts"], n["sz"]), 0])
ret[fname] = statfun(n["ts"], n["sz"])
return ret
def parse_html(self, sck):
ret = []
ret = {}
rem = b""
ptn = re.compile(
r'^<tr><td>(-|DIR|<a [^<]+</a>)</td><td><a[^>]* href="([^"]+)"[^>]*>([^<]+)</a></td><td>([^<]+)</td><td>.*</td><td>([^<]+)</td></tr>$'
@ -455,9 +455,9 @@ class Gateway(object):
# python cannot strptime(1959-01-01) on windows
if ftype != "DIR" and "zip=crc" not in ftype:
ret.append([fname, self.stat_file(ts, sz), 0])
ret[fname] = self.stat_file(ts, sz)
else:
ret.append([fname, self.stat_dir(ts, sz), 0])
ret[fname] = self.stat_dir(ts, sz)
return ret
@ -492,7 +492,8 @@ class CPPF(Operations):
self.gw = Gateway(ar)
self.junk_fh_ctr = 3
self.n_dircache = ar.cd
self.t_dircache = ar.cds
self.n_dircache = ar.cdn
self.n_filecache = ar.cf
self.dircache = []
@ -524,21 +525,22 @@ class CPPF(Operations):
now = time.time()
cutoff = 0
for cn in self.dircache:
if now - cn.ts > self.n_dircache:
cutoff += 1
else:
if now - cn.ts <= self.t_dircache:
break
cutoff += 1
if cutoff > 0:
self.dircache = self.dircache[cutoff:]
elif len(self.dircache) > self.n_dircache:
self.dircache.pop(0)
def get_cached_dir(self, dirpath):
with self.dircache_mtx:
self.clean_dircache()
for cn in self.dircache:
if cn.tag == dirpath:
if time.time() - cn.ts <= self.t_dircache:
return cn
break
return None
"""
@ -759,7 +761,7 @@ class CPPF(Operations):
return ret
def readdir(self, path, fh=None):
return [".", ".."] + self._readdir(path, fh)
return [".", ".."] + list(self._readdir(path, fh))
def read(self, path, length, offset, fh=None):
req_max = 1024 * 1024 * 8
@ -835,19 +837,10 @@ class CPPF(Operations):
dbg("cache miss")
dents = self._readdir(dirpath)
for cache_name, cache_stat, _ in dents:
# if "qw" in cache_name and "qw" in fname:
# info(
# "cmp\n [{}]\n [{}]\n\n{}\n".format(
# hexler(cache_name),
# hexler(fname),
# "\n".join(traceback.format_stack()[:-1]),
# )
# )
if cache_name == fname:
# dbg("=" + repr(cache_stat))
return cache_stat
try:
return dents[fname]
except:
pass
fun = info
if MACOS and path.split("/")[-1].startswith("._"):
@ -967,8 +960,8 @@ def main():
# dircache is always a boost,
# only want to disable it for tests etc,
# value is numSec until an entry goes stale
nd = 1
cdn = 9 # max num dirs; 0=disable
cds = 1 # numsec until an entry goes stale
where = "local directory"
if WINDOWS:
@ -993,7 +986,8 @@ def main():
ap2.add_argument("-td", action="store_true", help="disable certificate check")
ap2 = ap.add_argument_group("cache/perf")
ap2.add_argument("-cd", metavar="SECS", type=float, default=nd, help="directory-cache, expiration time")
ap2.add_argument("-cdn", metavar="DIRS", type=float, default=cdn, help="directory-cache, max num dirs; 0=disable")
ap2.add_argument("-cds", metavar="SECS", type=float, default=cds, help="directory-cache, expiration time")
ap2.add_argument("-cf", metavar="BLOCKS", type=int, default=nf, help="file cache; each block is <= 1 MiB")
ap2 = ap.add_argument_group("logging")